+désactivation du selecteur de cible dans la page capture analyse

.claude/settings.json

@@ -0,0 +1,7 @@
+{
+  "permissions": {
+    "allow": [
+      "Bash(flutter analyze:*)"
+    ]
+  }
+}

.claude/settings.local.json

@@ -3,7 +3,14 @@
     "allow": [
       "Bash(flutter clean:*)",
       "Bash(flutter pub get:*)",
-      "Bash(flutter run:*)"
+      "Bash(flutter run:*)",
+      "Bash(cmake:*)",
+      "Bash(where:*)",
+      "Bash(winget search:*)",
+      "Bash(winget install:*)",
+      "Bash(\"/c/Program Files \\(x86\\)/Microsoft Visual Studio/Installer/vs_installer.exe\" modify --installPath \"C:\\\\Program Files \\(x86\\)\\\\Microsoft Visual Studio\\\\2022\\\\BuildTools\" --add Microsoft.VisualStudio.Workload.VCTools --add Microsoft.VisualStudio.Component.VC.Tools.x86.x64 --add Microsoft.VisualStudio.Component.Windows11SDK.22621 --passive --wait)",
+      "Bash(cmd //c \"\"\"C:\\\\Program Files\\\\Microsoft Visual Studio\\\\18\\\\Community\\\\Common7\\\\Tools\\\\VsDevCmd.bat\"\" && flutter run -d windows\")",
+      "Bash(flutter doctor:*)"
     ]
   }
 }

lib/features/analysis/analysis_provider.dart

@@ -254,6 +254,130 @@ class AnalysisProvider extends ChangeNotifier {
     return detectedImpacts.length;
   }
 
+  /// Auto-detect impacts using OpenCV (Hough Circles + Contours)
+  ///
+  /// NOTE: OpenCV est actuellement désactivé sur Windows en raison de problèmes
+  /// de compilation. Cette méthode retourne 0 (aucun impact détecté).
+  /// Utiliser autoDetectImpacts() à la place.
+  ///
+  /// Utilise les algorithmes OpenCV pour une détection plus robuste:
+  /// - Transformation de Hough pour détecter les cercles
+  /// - Analyse de contours avec filtrage par circularité
+  Future<int> autoDetectImpactsWithOpenCV({
+    double cannyThreshold1 = 50,
+    double cannyThreshold2 = 150,
+    double minDist = 20,
+    double param1 = 100,
+    double param2 = 30,
+    int minRadius = 5,
+    int maxRadius = 50,
+    int blurSize = 5,
+    bool useContourDetection = true,
+    double minCircularity = 0.6,
+    double minContourArea = 50,
+    double maxContourArea = 5000,
+    bool clearExisting = false,
+  }) async {
+    if (_imagePath == null || _targetType == null) return 0;
+
+    final settings = OpenCVDetectionSettings(
+      cannyThreshold1: cannyThreshold1,
+      cannyThreshold2: cannyThreshold2,
+      minDist: minDist,
+      param1: param1,
+      param2: param2,
+      minRadius: minRadius,
+      maxRadius: maxRadius,
+      blurSize: blurSize,
+      useContourDetection: useContourDetection,
+      minCircularity: minCircularity,
+      minContourArea: minContourArea,
+      maxContourArea: maxContourArea,
+    );
+
+    final detectedImpacts = _detectionService.detectImpactsWithOpenCV(
+      _imagePath!,
+      _targetType!,
+      _targetCenterX,
+      _targetCenterY,
+      _targetRadius,
+      _ringCount,
+      settings: settings,
+    );
+
+    if (clearExisting) {
+      _shots.clear();
+    }
+
+    // Add detected impacts as shots
+    for (final impact in detectedImpacts) {
+      final score = _calculateShotScore(impact.x, impact.y);
+      final shot = Shot(
+        id: _uuid.v4(),
+        x: impact.x,
+        y: impact.y,
+        score: score,
+        sessionId: '',
+      );
+      _shots.add(shot);
+    }
+
+    _recalculateScores();
+    _recalculateGrouping();
+    notifyListeners();
+
+    return detectedImpacts.length;
+  }
+
+  /// Detect impacts with OpenCV using reference points
+  Future<int> detectFromReferencesWithOpenCV({
+    double tolerance = 2.0,
+    bool clearExisting = false,
+  }) async {
+    if (_imagePath == null || _targetType == null || _referenceImpacts.length < 2) {
+      return 0;
+    }
+
+    // Convertir les références
+    final references = _referenceImpacts
+        .map((shot) => ReferenceImpact(x: shot.x, y: shot.y))
+        .toList();
+
+    final detectedImpacts = _detectionService.detectImpactsWithOpenCVFromReferences(
+      _imagePath!,
+      _targetType!,
+      _targetCenterX,
+      _targetCenterY,
+      _targetRadius,
+      _ringCount,
+      references,
+      tolerance: tolerance,
+    );
+
+    if (clearExisting) {
+      _shots.clear();
+    }
+
+    // Add detected impacts as shots
+    for (final impact in detectedImpacts) {
+      final score = _calculateShotScore(impact.x, impact.y);
+      final shot = Shot(
+        id: _uuid.v4(),
+        x: impact.x,
+        y: impact.y,
+        score: score,
+        sessionId: '',
+      );
+      _shots.add(shot);
+    }
+
+    _recalculateScores();
+    _recalculateGrouping();
+    notifyListeners();
+
+    return detectedImpacts.length;
+  }
+
   /// Add a reference impact for calibrated detection
   void addReferenceImpact(double x, double y) {
     final score = _calculateShotScore(x, y);
@@ -405,6 +529,45 @@ class AnalysisProvider extends ChangeNotifier {
     }
   }
 
+
+/* version deux a tester*/
+  /// Calcule ET applique la correction pour un feedback immédiat
+  Future<void> calculateAndApplyDistortion() async {
+    // 1. Calcul des paramètres (votre code actuel)
+    _distortionParams = _distortionService.calculateDistortionFromCalibration(
+      targetCenterX: _targetCenterX,
+      targetCenterY: _targetCenterY,
+      targetRadius: _targetRadius,
+      imageAspectRatio: _imageAspectRatio,
+    );
+    
+    // 2. Vérification si une correction est réellement nécessaire
+    if (_distortionParams != null && _distortionParams!.needsCorrection) {
+      // 3. Application immédiate de la transformation (méthode asynchrone)
+      await applyDistortionCorrection(); 
+    } else {
+      notifyListeners(); // On prévient quand même si pas de correction
+    }
+  }
+
+  Future<void> runFullDistortionWorkflow() async {
+    _state = AnalysisState.loading; // Affiche un spinner sur votre UI
+    notifyListeners();
+
+    try {
+      calculateDistortion(); // Calcule les paramètres
+      await applyDistortionCorrection(); // Génère le fichier corrigé
+      _distortionCorrectionEnabled = true; // Active l'affichage
+      _state = AnalysisState.success;
+    } catch (e) {
+      _errorMessage = "Erreur de rendu : $e";
+      _state = AnalysisState.error;
+    } finally {
+      notifyListeners();
+    }
+  }
+/* fin section deux a tester*/
+
   int _calculateShotScore(double x, double y) {
     if (_targetType == TargetType.concentric) {
       return _scoreCalculatorService.calculateConcentricScore(

lib/features/analysis/analysis_screen.dart

@@ -56,6 +56,8 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
   bool _isCalibrating = false;
   bool _isSelectingReferences = false;
   bool _isFullscreenEditMode = false;
+  bool _isAtBottom = false;
+  final ScrollController _scrollController = ScrollController();
   final TransformationController _transformationController = TransformationController();
   final GlobalKey _imageKey = GlobalKey();
   double _currentZoomScale = 1.0;
@@ -64,12 +66,25 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
   void initState() {
     super.initState();
     _transformationController.addListener(_onTransformChanged);
+    _scrollController.addListener(_onScroll);
+  }
+
+  void _onScroll() {
+    if (!_scrollController.hasClients) return;
+    // Detect if we are near the bottom (within 20 pixels of the specific spacing we added)
+    final isBottom = _scrollController.position.pixels >= _scrollController.position.maxScrollExtent - 20;
+    if (isBottom != _isAtBottom) {
+      setState(() {
+        _isAtBottom = isBottom;
+      });
+    }
   }
 
   @override
   void dispose() {
     _transformationController.removeListener(_onTransformChanged);
     _transformationController.dispose();
+    _scrollController.dispose();
     super.dispose();
   }
 
@@ -160,26 +175,6 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
           }
         },
       ),
-      floatingActionButton: Consumer<AnalysisProvider>(
-        builder: (context, provider, _) {
-          if (provider.state != AnalysisState.success) return const SizedBox.shrink();
-          if (_isCalibrating) {
-            return FloatingActionButton.extended(
-              onPressed: () {
-                setState(() => _isCalibrating = false);
-              },
-              backgroundColor: AppTheme.successColor,
-              icon: const Icon(Icons.check),
-              label: const Text('Valider'),
-            );
-          }
-          return FloatingActionButton.extended(
-            onPressed: () => _saveSession(context, provider),
-            icon: const Icon(Icons.save),
-            label: const Text('Sauvegarder'),
-          );
-        },
-      ),
     );
   }
 
@@ -189,8 +184,11 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
       return _buildFullscreenEditContent(context, provider);
     }
 
-    return SingleChildScrollView(
+    return Stack(
-      child: Column(
+      children: [
+        SingleChildScrollView(
+          controller: _scrollController,
+          child: Column(
         crossAxisAlignment: CrossAxisAlignment.stretch,
         children: [
           // Calibration mode indicator
@@ -442,9 +440,13 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
 
                   // Action buttons
                   _buildActionButtons(context, provider),
+
+                  // Large spacing at the bottom to trigger the state change
+                  const SizedBox(height: 50),
                 ],
               ),
             )
+
           else
             // Calibration info
             Padding(
@@ -498,7 +500,74 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
             ),
         ],
       ),
-    );
+    ),
+      Positioned(
+        bottom: 0,
+        left: 0,
+        right: 0,
+        child: Align(
+          alignment: _isAtBottom ? Alignment.bottomCenter : Alignment.bottomRight,
+          child: Padding(
+            padding: _isAtBottom ? EdgeInsets.zero : const EdgeInsets.all(16.0),
+            child: _isCalibrating 
+            ? FloatingActionButton.extended(
+                onPressed: () => setState(() => _isCalibrating = false),
+                backgroundColor: AppTheme.successColor,
+                icon: const Icon(Icons.check),
+                label: const Text('Valider'),
+              )
+            : AnimatedContainer(
+                duration: const Duration(milliseconds: 260),
+                curve: Curves.easeInOut,
+                width: _isAtBottom ? MediaQuery.of(context).size.width : 180,
+                height: 56,
+                decoration: BoxDecoration(
+                  color: AppTheme.primaryColor,
+                  borderRadius: BorderRadius.circular(_isAtBottom ? 0 : 16),
+                  boxShadow: [
+                    if (!_isAtBottom) 
+                      BoxShadow(
+                        color: Colors.black.withOpacity(0.2),
+                        blurRadius: 6,
+                        offset: const Offset(0, 3),
+                      ),
+                  ],
+                ),
+                child: Material(
+                  color: Colors.transparent,
+                  child: InkWell(
+                    onTap: () => _saveSession(context, provider),
+                    borderRadius: BorderRadius.circular(_isAtBottom ? 0 : 16),
+                    child: Padding(
+                      padding: const EdgeInsets.symmetric(horizontal: 20, vertical: 16),
+                      child: FittedBox(
+                        fit: BoxFit.scaleDown,
+                        child: Row(
+                        mainAxisSize: MainAxisSize.min,
+                        mainAxisAlignment: MainAxisAlignment.center,
+                        children: [
+                          const Icon(Icons.save, color: Colors.white),
+                          const SizedBox(width: 8),
+                          Text(
+                            _isAtBottom ? 'SAUVEGARDER LA SESSION' : 'Sauvegarder',
+                            style: const TextStyle(
+                              color: Colors.white, 
+                              fontWeight: FontWeight.bold,
+                              fontSize: 16
+                            ),
+                          ),
+                        ],
+                      ),
+                      ),
+                    ),
+                  ),
+                ),
+            ),
+          ),
+        ),
+      ),
+    ],
+  );
   }
 
   Widget _buildZoomableImageWithOverlay(BuildContext context, AnalysisProvider provider) {
@@ -762,36 +831,37 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
           ),
           const SizedBox(height: 12),
         ] else ...[
+          // désactiver le temps de l'amelioration du scripts d'auto-detection
           // Auto-detect buttons row
-          Row(
+          // Row(
-            children: [
+          //   children: [
-              Expanded(
+          //     Expanded(
-                child: ElevatedButton.icon(
+          //       child: ElevatedButton.icon(
-                  onPressed: () => _showAutoDetectDialog(context, provider),
+          //         onPressed: () => _showAutoDetectDialog(context, provider),
-                  icon: const Icon(Icons.auto_fix_high),
+          //         icon: const Icon(Icons.auto_fix_high),
-                  label: const Text('Auto-Detection'),
+          //         label: const Text('Auto-Detection'),
-                  style: ElevatedButton.styleFrom(
+          //         style: ElevatedButton.styleFrom(
-                    backgroundColor: AppTheme.primaryColor,
+          //           backgroundColor: AppTheme.primaryColor,
-                    foregroundColor: Colors.white,
+          //           foregroundColor: Colors.white,
-                    padding: const EdgeInsets.symmetric(vertical: 12),
+          //           padding: const EdgeInsets.symmetric(vertical: 12),
-                  ),
+          //         ),
-                ),
+          //       ),
-              ),
+          //     ),
-              const SizedBox(width: 12),
+          //     const SizedBox(width: 12),
-              Expanded(
+          //     Expanded(
-                child: ElevatedButton.icon(
+          //       child: ElevatedButton.icon(
-                  onPressed: () => setState(() => _isSelectingReferences = true),
+          //         onPressed: () => setState(() => _isSelectingReferences = true),
-                  icon: const Icon(Icons.touch_app),
+          //         icon: const Icon(Icons.touch_app),
-                  label: const Text('Par Reference'),
+          //         label: const Text('Par Reference'),
-                  style: ElevatedButton.styleFrom(
+          //         style: ElevatedButton.styleFrom(
-                    backgroundColor: Colors.deepPurple,
+          //           backgroundColor: Colors.deepPurple,
-                    foregroundColor: Colors.white,
+          //           foregroundColor: Colors.white,
-                    padding: const EdgeInsets.symmetric(vertical: 12),
+          //           padding: const EdgeInsets.symmetric(vertical: 12),
-                  ),
+          //         ),
-                ),
+          //       ),
-              ),
+          //     ),
-            ],
+          //   ],
-          ),
+          // ),
           const SizedBox(height: 12),
         ],
         // Manual actions
@@ -903,12 +973,16 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
   }
 
   void _showAutoDetectDialog(BuildContext context, AnalysisProvider provider) {
+    // Detection settings
+    bool clearExisting = true;
+    double minCircularity = 0.6;
     int darkThreshold = 80;
     int minImpactSize = 20;
     int maxImpactSize = 500;
-    double minCircularity = 0.6;
     double minFillRatio = 0.5;
-    bool clearExisting = true;
+
+    // NOTE: OpenCV désactivé - problèmes de build Windows
+    // Utilisation de la détection classique uniquement
 
     showDialog(
       context: context,
@@ -1012,6 +1086,7 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
                     setState(() => maxImpactSize = value.round());
                   },
                 ),
+
                 const SizedBox(height: 12),
 
                 // Clear existing checkbox
@@ -1053,7 +1128,7 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
                   ),
                 );
 
-                // Run detection
+                // Run classic detection
                 final count = await provider.autoDetectImpacts(
                   darkThreshold: darkThreshold,
                   minImpactSize: minImpactSize,
@@ -1090,6 +1165,8 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
   void _showCalibratedDetectionDialog(BuildContext context, AnalysisProvider provider) {
     double tolerance = 2.0;
     bool clearExisting = true;
+    // NOTE: OpenCV désactivé - problèmes de build Windows
+    // Utilisation de la détection classique uniquement
 
     showDialog(
       context: context,
@@ -1177,7 +1254,7 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
               onPressed: () async {
                 Navigator.pop(context);
 
-                // Learn from references
+                // Show loading
                 ScaffoldMessenger.of(context).showSnackBar(
                   const SnackBar(
                     content: Row(
@@ -1195,6 +1272,7 @@ class _AnalysisScreenContentState extends State<_AnalysisScreenContent> {
                   ),
                 );
 
+                // Classic detection: learn then detect
                 final learned = provider.learnFromReferences();
 
                 if (!learned) {

lib/features/capture/capture_screen.dart

@@ -39,15 +39,16 @@ class _CaptureScreenState extends State<CaptureScreen> {
         child: Column(
           crossAxisAlignment: CrossAxisAlignment.stretch,
           children: [
+            // TODO: une fois la cible de silhouette mise en place, rajouter le selecteur
             // Target type selection
-            _buildSectionTitle('Type de Cible'),
+            // _buildSectionTitle('Type de Cible'),
-            const SizedBox(height: 12),
+            // const SizedBox(height: 12),
-            TargetTypeSelector(
+            // TargetTypeSelector(
-              selectedType: _selectedType,
+            //   selectedType: _selectedType,
-              onTypeSelected: (type) {
+            //   onTypeSelected: (type) {
-                setState(() => _selectedType = type);
+            //     setState(() => _selectedType = type);
-              },
+            //   },
-            ),
+            // ),
             const SizedBox(height: AppConstants.largePadding),
 
             // Image source selection

lib/services/distortion_correction_service.dart

@@ -402,13 +402,64 @@ class DistortionCorrectionService {
     return h;
   }
 
+  /// Résout le système linéaire pour trouver la matrice d'homographie 3x3.
+  /// Utilise l'élimination de Gauss-Jordan avec pivot partiel pour la stabilité.
   List<double> _solveHomography(List<List<double>> a) {
-    // Implémentation simplifiée - normalisation et résolution
+    // Le système 'a' est de taille 8x9 (8 équations, 9 inconnues).
-    // En pratique, on devrait utiliser une vraie décomposition SVD
+    // On fixe h8 = 1.0 pour résoudre le système, ce qui nous donne un système 8x8.
+    final int n = 8;
+    final List<List<double>> matrix = List.generate(n, (i) => List<double>.from(a[i]));
     
-    // Pour l'instant, retourner une matrice identité
+    // Vecteur B (les constantes de l'autre côté de l'égalité)
-    // TODO: Implémenter une vraie résolution
+    // Dans DLT, -h8 * dx (ou dy) devient le terme constant.
-    return [1, 0, 0, 0, 1, 0, 0, 0, 1];
+    final List<double> b = List.generate(n, (i) => -matrix[i][8]);
+
+    // Élimination de Gauss-Jordan
+    for (int i = 0; i < n; i++) {
+      // Recherche du pivot (valeur maximale dans la colonne pour limiter les erreurs)
+      int pivot = i;
+      for (int j = i + 1; j < n; j++) {
+        if (matrix[j][i].abs() > matrix[pivot][i].abs()) {
+          pivot = j;
+        }
+      }
+
+      // Échange des lignes (si nécessaire)
+      final List<double> tempRow = matrix[i];
+      matrix[i] = matrix[pivot];
+      matrix[pivot] = tempRow;
+      
+      final double tempB = b[i];
+      b[i] = b[pivot];
+      b[pivot] = tempB;
+
+      // Vérification de la singularité (division par zéro impossible)
+      if (matrix[i][i].abs() < 1e-10) {
+        return [1, 0, 0, 0, 1, 0, 0, 0, 1]; // Retourne identité si échec
+      }
+
+      // Normalisation de la ligne pivot
+      for (int j = i + 1; j < n; j++) {
+        final double factor = matrix[j][i] / matrix[i][i];
+        b[j] -= factor * b[i];
+        for (int k = i; k < n; k++) {
+          matrix[j][k] -= factor * matrix[i][k];
+        }
+      }
+    }
+
+    // Substitution arrière
+    final List<double> h = List.filled(9, 0.0);
+    for (int i = n - 1; i >= 0; i--) {
+      double sum = 0.0;
+      for (int j = i + 1; j < n; j++) {
+        sum += matrix[i][j] * h[j];
+      }
+      h[i] = (b[i] - sum) / matrix[i][i];
+    }
+
+    h[8] = 1.0; // Normalisation finale
+    return h;
   }
 
   ({double x, double y}) _applyPerspectiveTransform(List<double> h, double x, double y) {

lib/services/image_processing_service.dart

@@ -196,10 +196,11 @@ class ImageProcessingService {
 
   /// Analyze reference impacts to learn their characteristics
   /// This actually finds the blob at each reference point and extracts its real properties
+  /// AMÉLIORÉ : Recherche plus large et analyse plus robuste
   ImpactCharacteristics? analyzeReferenceImpacts(
     String imagePath,
     List<ReferenceImpact> references, {
-    int searchRadius = 30,
+    int searchRadius = 50, // Augmenté de 30 à 50
   }) {
     if (references.length < 2) return null;
 
@@ -209,10 +210,10 @@ class ImageProcessingService {
       final originalImage = img.decodeImage(bytes);
       if (originalImage == null) return null;
 
-      // Resize for faster processing
+      // Resize for faster processing - taille augmentée
       img.Image image;
       double scale = 1.0;
-      final maxDimension = 1000;
+      final maxDimension = 1200; // Augmenté pour plus de précision
       if (originalImage.width > maxDimension || originalImage.height > maxDimension) {
         scale = maxDimension / math.max(originalImage.width, originalImage.height);
         image = img.copyResize(
@@ -235,45 +236,67 @@ class ImageProcessingService {
       final fillRatios = <double>[];
       final thresholds = <double>[];
 
-      for (final ref in references) {
+      print('Analyzing ${references.length} reference impacts...');
+
+      for (int refIndex = 0; refIndex < references.length; refIndex++) {
+        final ref = references[refIndex];
         final centerX = (ref.x * width).round().clamp(0, width - 1);
         final centerY = (ref.y * height).round().clamp(0, height - 1);
 
-        // Find the darkest point in the search area (the center of the impact)
+        print('Reference $refIndex at ($centerX, $centerY)');
+
+        // AMÉLIORATION : Recherche du point le plus sombre dans une zone plus large
         int darkestX = centerX;
         int darkestY = centerY;
         double darkestLum = 255;
 
-        for (int dy = -searchRadius; dy <= searchRadius; dy++) {
+        // Recherche en spirale du point le plus sombre
-          for (int dx = -searchRadius; dx <= searchRadius; dx++) {
+        for (int r = 0; r <= searchRadius; r++) {
-            final px = centerX + dx;
+          for (int dy = -r; dy <= r; dy++) {
-            final py = centerY + dy;
+            for (int dx = -r; dx <= r; dx++) {
-            if (px < 0 || px >= width || py < 0 || py >= height) continue;
+              // Seulement le périmètre du carré pour éviter les doublons
+              if (r > 0 && math.max(dx.abs(), dy.abs()) < r) continue;
 
-            final pixel = blurred.getPixel(px, py);
+              final px = centerX + dx;
-            final lum = img.getLuminance(pixel).toDouble();
+              final py = centerY + dy;
-            if (lum < darkestLum) {
+              if (px < 0 || px >= width || py < 0 || py >= height) continue;
-              darkestLum = lum;
+
-              darkestX = px;
+              final pixel = blurred.getPixel(px, py);
-              darkestY = py;
+              final lum = img.getLuminance(pixel).toDouble();
+              if (lum < darkestLum) {
+                darkestLum = lum;
+                darkestX = px;
+                darkestY = py;
+              }
             }
           }
+
+          // Si on a trouvé un point très sombre, on peut s'arrêter
+          if (darkestLum < 50 && r > 5) break;
         }
 
+        print('  Darkest point at ($darkestX, $darkestY), lum=$darkestLum');
+
         // Now find the blob at the darkest point using adaptive threshold
-        // Start from the darkest point and expand until we find the boundary
         final blobResult = _findBlobAtPoint(blurred, darkestX, darkestY, width, height);
 
-        if (blobResult != null) {
+        if (blobResult != null && blobResult.size >= 10) { // Au moins 10 pixels
           luminances.add(blobResult.avgLuminance);
           sizes.add(blobResult.size.toDouble());
           circularities.add(blobResult.circularity);
           fillRatios.add(blobResult.fillRatio);
           thresholds.add(blobResult.threshold);
+          print('  Found blob: size=${blobResult.size}, circ=${blobResult.circularity.toStringAsFixed(2)}, '
+                'fill=${blobResult.fillRatio.toStringAsFixed(2)}, threshold=${blobResult.threshold.toStringAsFixed(0)}');
+        } else {
+          print('  No valid blob found at this reference');
         }
       }
 
-      if (luminances.isEmpty) return null;
+      if (luminances.isEmpty) {
+        print('ERROR: No valid blobs found from any reference!');
+        return null;
+      }
 
       // Calculate statistics
       final avgLum = luminances.reduce((a, b) => a + b) / luminances.length;
@@ -290,17 +313,25 @@ class ImageProcessingService {
         sizeVariance += math.pow(sizes[i] - avgSize, 2);
       }
       final lumStdDev = math.sqrt(lumVariance / luminances.length);
-      final sizeStdDev = math.sqrt(sizeVariance / sizes.length);
+      // AMÉLIORATION : Écart-type minimum pour éviter des plages trop étroites
+      final sizeStdDev = math.max(
+        math.sqrt(sizeVariance / sizes.length),
+        avgSize * 0.3, // Au moins 30% de variance
+      );
 
-      return ImpactCharacteristics(
+      final result = ImpactCharacteristics(
         avgLuminance: avgLum,
-        luminanceStdDev: lumStdDev,
+        luminanceStdDev: math.max(lumStdDev, 10), // Minimum 10 de variance
         avgSize: avgSize,
         sizeStdDev: sizeStdDev,
         avgCircularity: avgCirc,
         avgFillRatio: avgFill,
         avgDarkThreshold: avgThreshold,
       );
+
+      print('Learned characteristics: $result');
+
+      return result;
     } catch (e) {
       print('Error analyzing reference impacts: $e');
       return null;
@@ -308,25 +339,30 @@ class ImageProcessingService {
   }
 
   /// Find a blob at a specific point and extract its characteristics
+  /// AMÉLIORÉ : Utilise plusieurs méthodes de détection et retourne le meilleur résultat
   _BlobAnalysis? _findBlobAtPoint(img.Image image, int startX, int startY, int width, int height) {
     // Get the luminance at the center point
     final centerPixel = image.getPixel(startX, startY);
     final centerLum = img.getLuminance(centerPixel).toDouble();
 
-    // Find the threshold by looking at the luminance gradient around the point
+    // MÉTHODE 1 : Expansion radiale pour trouver le bord
-    // Sample in expanding circles to find where the blob ends
     double sumLum = centerLum;
     int pixelCount = 1;
     double maxRadius = 0;
 
-    // Sample at different radii to find the edge
+    // Collecter les luminances à différents rayons pour une analyse plus robuste
-    for (int r = 1; r <= 50; r++) {
+    final radialLuminances = <double>[];
+
+    // Sample at different radii to find the edge - LIMITE RAISONNABLE pour impacts de balle
+    final maxSearchRadius = 60; // Un impact de balle ne fait pas plus de 60 pixels de rayon
+    for (int r = 1; r <= maxSearchRadius; r++) {
       double ringSum = 0;
       int ringCount = 0;
 
       // Sample points on a ring
-      for (int i = 0; i < 16; i++) {
+      final numSamples = math.max(12, r ~/ 2);
-        final angle = (i / 16) * 2 * math.pi;
+      for (int i = 0; i < numSamples; i++) {
+        final angle = (i / numSamples) * 2 * math.pi;
         final px = startX + (r * math.cos(angle)).round();
         final py = startY + (r * math.sin(angle)).round();
         if (px < 0 || px >= width || py < 0 || py >= height) continue;
@@ -339,20 +375,47 @@ class ImageProcessingService {
 
       if (ringCount > 0) {
         final avgRingLum = ringSum / ringCount;
-        // If the ring is significantly brighter than the center, we've found the edge
+        radialLuminances.add(avgRingLum);
-        if (avgRingLum > centerLum + 40) {
+
+        // Détection du bord : gradient de luminosité significatif
+        // Seuil adaptatif basé sur la différence avec le centre
+        final luminanceDiff = avgRingLum - centerLum;
+
+        // Le bord est trouvé quand on a une augmentation significative de luminosité
+        if (luminanceDiff > 30 && maxRadius == 0) {
           maxRadius = r.toDouble();
-          break;
+          break; // Arrêter dès qu'on trouve le bord
+        }
+
+        if (maxRadius == 0) {
+          sumLum += ringSum;
+          pixelCount += ringCount;
         }
-        sumLum += ringSum;
-        pixelCount += ringCount;
       }
     }
 
-    if (maxRadius < 3) return null; // Too small to be a valid blob
+    // Si aucun bord trouvé, chercher le gradient maximum
+    if (maxRadius < 2 && radialLuminances.length > 3) {
+      double maxGradient = 0;
+      int maxGradientIndex = 0;
+      for (int i = 1; i < radialLuminances.length; i++) {
+        final gradient = radialLuminances[i] - radialLuminances[i - 1];
+        if (gradient > maxGradient) {
+          maxGradient = gradient;
+          maxGradientIndex = i;
+        }
+      }
+      if (maxGradient > 10) {
+        maxRadius = (maxGradientIndex + 1).toDouble();
+      }
+    }
 
-    // Calculate threshold as the midpoint between center and edge luminance
+    // Rayon minimum de 3 pixels, maximum de 50 pour un impact de balle
-    final edgeRadius = (maxRadius * 1.2).round();
+    if (maxRadius < 3) maxRadius = 3;
+    if (maxRadius > 50) maxRadius = 50;
+
+    // Calculate threshold as weighted average between center and edge luminance
+    final edgeRadius = math.min((maxRadius * 1.2).round(), maxSearchRadius - 1);
     double edgeLum = 0;
     int edgeCount = 0;
     for (int i = 0; i < 16; i++) {
@@ -366,62 +429,94 @@ class ImageProcessingService {
     }
     if (edgeCount > 0) {
       edgeLum /= edgeCount;
+    } else {
+      edgeLum = centerLum + 50;
     }
 
-    final threshold = ((centerLum + edgeLum) / 2).round();
+    // Calculer le seuil optimal
+    final threshold = ((centerLum + edgeLum) / 2).round().clamp(20, 200);
 
-    // Now do a flood fill with this threshold to get the actual blob
+    // Utiliser une zone de recherche locale limitée autour du point
-    final mask = List.generate(height, (_) => List.filled(width, false));
+    final analysis = _tryFindBlobWithThresholdLocal(
-    for (int y = 0; y < height; y++) {
+      image, startX, startY, width, height, threshold, sumLum / pixelCount,
-      for (int x = 0; x < width; x++) {
+      maxRadius.round() + 10, // Zone de recherche légèrement plus grande que le rayon détecté
-        final pixel = image.getPixel(x, y);
+    );
+
+    return analysis;
+  }
+
+  /// Trouve un blob avec un seuil dans une zone locale limitée
+  _BlobAnalysis? _tryFindBlobWithThresholdLocal(
+    img.Image image,
+    int startX,
+    int startY,
+    int width,
+    int height,
+    int threshold,
+    double avgLuminance,
+    int maxSearchRadius,
+  ) {
+    // Limiter la zone de recherche
+    final minX = math.max(0, startX - maxSearchRadius);
+    final maxX = math.min(width - 1, startX + maxSearchRadius);
+    final minY = math.max(0, startY - maxSearchRadius);
+    final maxY = math.min(height - 1, startY + maxSearchRadius);
+
+    final localWidth = maxX - minX + 1;
+    final localHeight = maxY - minY + 1;
+
+    // Create binary mask ONLY for the local region
+    final mask = List.generate(localHeight, (_) => List.filled(localWidth, false));
+    for (int y = 0; y < localHeight; y++) {
+      for (int x = 0; x < localWidth; x++) {
+        final globalX = minX + x;
+        final globalY = minY + y;
+        final pixel = image.getPixel(globalX, globalY);
         final lum = img.getLuminance(pixel);
         mask[y][x] = lum < threshold;
       }
     }
 
-    final visited = List.generate(height, (_) => List.filled(width, false));
+    final visited = List.generate(localHeight, (_) => List.filled(localWidth, false));
 
-    // Find the blob containing the start point
+    // Find the blob containing the start point (in local coordinates)
-    if (!mask[startY][startX]) {
+    final localStartX = startX - minX;
+    final localStartY = startY - minY;
+
+    int searchX = localStartX;
+    int searchY = localStartY;
+
+    if (!mask[localStartY][localStartX]) {
       // Start point might not be in mask, find nearest point that is
-      for (int r = 1; r <= 10; r++) {
+      bool found = false;
-        bool found = false;
+      for (int r = 1; r <= 15 && !found; r++) {
         for (int dy = -r; dy <= r && !found; dy++) {
           for (int dx = -r; dx <= r && !found; dx++) {
-            final px = startX + dx;
+            final px = localStartX + dx;
-            final py = startY + dy;
+            final py = localStartY + dy;
-            if (px >= 0 && px < width && py >= 0 && py < height && mask[py][px]) {
+            if (px >= 0 && px < localWidth && py >= 0 && py < localHeight && mask[py][px]) {
-              final blob = _floodFill(mask, visited, px, py, width, height);
+              searchX = px;
-
+              searchY = py;
-              // Calculate fill ratio: actual pixels / bounding circle area
+              found = true;
-              final boundingRadius = math.max(blob.radius, 1);
-              final boundingCircleArea = math.pi * boundingRadius * boundingRadius;
-              final fillRatio = (blob.size / boundingCircleArea).clamp(0.0, 1.0);
-
-              return _BlobAnalysis(
-                avgLuminance: sumLum / pixelCount,
-                size: blob.size,
-                circularity: blob.circularity,
-                fillRatio: fillRatio,
-                threshold: threshold.toDouble(),
-              );
             }
           }
         }
       }
-      return null;
+      if (!found) return null;
     }
 
-    final blob = _floodFill(mask, visited, startX, startY, width, height);
+    final blob = _floodFillLocal(mask, visited, searchX, searchY, localWidth, localHeight);
 
-    // Calculate fill ratio
+    // Vérifier que le blob est valide - taille raisonnable pour un impact
+    if (blob.size < 10 || blob.size > 5000) return null; // Entre 10 et 5000 pixels
+
+    // Calculate fill ratio: actual pixels / bounding circle area
     final boundingRadius = math.max(blob.radius, 1);
     final boundingCircleArea = math.pi * boundingRadius * boundingRadius;
     final fillRatio = (blob.size / boundingCircleArea).clamp(0.0, 1.0);
 
     return _BlobAnalysis(
-      avgLuminance: sumLum / pixelCount,
+      avgLuminance: avgLuminance,
       size: blob.size,
       circularity: blob.circularity,
       fillRatio: fillRatio,
@@ -429,12 +524,110 @@ class ImageProcessingService {
     );
   }
 
+  /// Flood fill pour une zone locale
+  _Blob _floodFillLocal(
+    List<List<bool>> mask,
+    List<List<bool>> visited,
+    int startX,
+    int startY,
+    int width,
+    int height,
+  ) {
+    final stack = <_Point>[_Point(startX, startY)];
+    final points = <_Point>[];
+
+    int minX = startX, maxX = startX;
+    int minY = startY, maxY = startY;
+    int perimeterCount = 0;
+
+    while (stack.isNotEmpty) {
+      final point = stack.removeLast();
+      final x = point.x;
+      final y = point.y;
+
+      if (x < 0 || x >= width || y < 0 || y >= height) continue;
+      if (visited[y][x] || !mask[y][x]) continue;
+
+      visited[y][x] = true;
+      points.add(point);
+
+      minX = math.min(minX, x);
+      maxX = math.max(maxX, x);
+      minY = math.min(minY, y);
+      maxY = math.max(maxY, y);
+
+      // Check if this is a perimeter pixel
+      bool isPerimeter = false;
+      for (final delta in [[-1, 0], [1, 0], [0, -1], [0, 1]]) {
+        final nx = x + delta[0];
+        final ny = y + delta[1];
+        if (nx < 0 || nx >= width || ny < 0 || ny >= height || !mask[ny][nx]) {
+          isPerimeter = true;
+          break;
+        }
+      }
+      if (isPerimeter) perimeterCount++;
+
+      // Add neighbors (4-connectivity)
+      stack.add(_Point(x + 1, y));
+      stack.add(_Point(x - 1, y));
+      stack.add(_Point(x, y + 1));
+      stack.add(_Point(x, y - 1));
+    }
+
+    // Calculate centroid
+    double sumX = 0, sumY = 0;
+    for (final p in points) {
+      sumX += p.x;
+      sumY += p.y;
+    }
+
+    final centerX = points.isNotEmpty ? sumX / points.length : startX.toDouble();
+    final centerY = points.isNotEmpty ? sumY / points.length : startY.toDouble();
+
+    // Calculate bounding box dimensions
+    final blobWidth = (maxX - minX + 1).toDouble();
+    final blobHeight = (maxY - minY + 1).toDouble();
+
+    // Calculate approximate radius based on bounding box
+    final radius = math.max(blobWidth, blobHeight) / 2.0;
+
+    // Calculate circularity
+    final area = points.length.toDouble();
+    final perimeter = perimeterCount.toDouble();
+    final circularity = perimeter > 0
+        ? (4 * math.pi * area) / (perimeter * perimeter)
+        : 0.0;
+
+    // Calculate aspect ratio
+    final aspectRatio = blobWidth > blobHeight
+        ? blobWidth / blobHeight
+        : blobHeight / blobWidth;
+
+    // Calculate fill ratio
+    final boundingCircleArea = math.pi * radius * radius;
+    final fillRatio = boundingCircleArea > 0 ? (area / boundingCircleArea).clamp(0.0, 1.0) : 0.0;
+
+    return _Blob(
+      x: centerX,
+      y: centerY,
+      radius: radius,
+      size: points.length,
+      circularity: circularity.clamp(0.0, 1.0),
+      aspectRatio: aspectRatio,
+      fillRatio: fillRatio,
+    );
+  }
+
+
   /// Detect impacts based on reference characteristics with tolerance
+  ///
+  /// Utilise une approche multi-seuils adaptative pour une meilleure détection
   List<DetectedImpact> detectImpactsFromReferences(
     String imagePath,
     ImpactCharacteristics characteristics, {
     double tolerance = 2.0, // Number of standard deviations
-    double minCircularity = 0.4,
+    double minCircularity = 0.3,
   }) {
     try {
       final file = File(imagePath);
@@ -445,7 +638,7 @@ class ImageProcessingService {
       // Resize for faster processing
       img.Image image;
       double scale = 1.0;
-      final maxDimension = 1000;
+      final maxDimension = 1200; // Augmenté pour plus de précision
       if (originalImage.width > maxDimension || originalImage.height > maxDimension) {
         scale = maxDimension / math.max(originalImage.width, originalImage.height);
         image = img.copyResize(
@@ -460,36 +653,83 @@ class ImageProcessingService {
       final grayscale = img.grayscale(image);
       final blurred = img.gaussianBlur(grayscale, radius: 2);
 
-      // Use the threshold learned from references
+      // AMÉLIORATION : Utiliser plusieurs seuils autour du seuil appris
-      final threshold = characteristics.avgDarkThreshold.round();
+      final baseThreshold = characteristics.avgDarkThreshold.round();
+
+      // Générer une plage de seuils plus ciblée
+      final thresholds = <int>[];
+      final thresholdRange = (15 * tolerance).round(); // Plage modérée
+      for (int offset = -thresholdRange; offset <= thresholdRange; offset += 8) {
+        final t = (baseThreshold + offset).clamp(30, 150);
+        if (!thresholds.contains(t)) thresholds.add(t);
+      }
 
       // Calculate size range based on learned characteristics
-      final minSize = (characteristics.avgSize / (tolerance * 2)).clamp(5, 10000).round();
+      // Utiliser la variance mais avec des limites raisonnables
-      final maxSize = (characteristics.avgSize * tolerance * 2).clamp(10, 10000).round();
+      final sizeVariance = math.max(characteristics.sizeStdDev * tolerance, characteristics.avgSize * 0.4);
+      final minSize = math.max(20, (characteristics.avgSize - sizeVariance).round()); // Minimum 20 pixels
+      final maxSize = math.min(3000, (characteristics.avgSize + sizeVariance * 2).round()); // Maximum 3000 pixels
 
-      // Calculate minimum fill ratio based on learned characteristics
+      // Calculate minimum circularity - équilibré
-      // Allow some variance but still filter out hollow shapes
+      final circularityTolerance = 0.2 * tolerance;
-      final minFillRatio = (characteristics.avgFillRatio - 0.2).clamp(0.3, 0.9);
+      final effectiveMinCircularity = math.max(
+        characteristics.avgCircularity - circularityTolerance,
+        minCircularity,
+      ).clamp(0.35, 0.85);
 
-      // Detect blobs using the learned threshold
+      // Calculate minimum fill ratio - impacts pleins
-      final impacts = _detectDarkSpots(
+      final minFillRatio = (characteristics.avgFillRatio - 0.2).clamp(0.35, 0.85);
-        blurred,
+
-        threshold,
+      print('Detection params: thresholds=$thresholds, size=$minSize-$maxSize, '
-        minSize,
+            'circ>=$effectiveMinCircularity, fill>=$minFillRatio');
-        maxSize,
+
-        minCircularity: math.max(characteristics.avgCircularity - 0.2, minCircularity),
+      // Détecter avec plusieurs seuils et combiner les résultats
-        minFillRatio: minFillRatio,
+      final allBlobs = <_Blob>[];
-      );
+
+      for (final threshold in thresholds) {
+        final blobs = _detectDarkSpots(
+          blurred,
+          threshold,
+          minSize,
+          maxSize,
+          minCircularity: effectiveMinCircularity,
+          maxAspectRatio: 2.5, // Plus permissif
+          minFillRatio: minFillRatio,
+        );
+        allBlobs.addAll(blobs);
+      }
+
+      // Fusionner les blobs qui se chevauchent (même impact détecté à différents seuils)
+      final mergedBlobs = _mergeOverlappingBlobs(allBlobs);
+
+      // FILTRE POST-DÉTECTION : Garder seulement les blobs similaires aux références
+      // Le filtre est plus ou moins strict selon la tolérance
+      final sizeToleranceFactor = 0.3 + (tolerance - 1) * 0.3; // 0.3 à 1.5 selon tolérance
+      final minSizeRatio = math.max(0.15, 1 / (1 + sizeToleranceFactor * 3));
+      final maxSizeRatio = 1 + sizeToleranceFactor * 4;
+
+      final filteredBlobs = mergedBlobs.where((blob) {
+        // Vérifier la taille par rapport aux caractéristiques apprises
+        final sizeRatio = blob.size / characteristics.avgSize;
+        if (sizeRatio < minSizeRatio || sizeRatio > maxSizeRatio) return false;
+
+        // Vérifier la circularité (légèrement relaxée)
+        if (blob.circularity < effectiveMinCircularity * 0.85) return false;
+
+        // Vérifier le fill ratio
+        if (blob.fillRatio < minFillRatio * 0.9) return false;
+
+        return true;
+      }).toList();
+
+      print('Found ${filteredBlobs.length} impacts after filtering (from ${mergedBlobs.length} merged)');
 
       // Convert to relative coordinates
-      final width = originalImage.width.toDouble();
+      return filteredBlobs.map((blob) {
-      final height = originalImage.height.toDouble();
-
-      return impacts.map((impact) {
         return DetectedImpact(
-          x: impact.x / image.width,
+          x: blob.x / image.width,
-          y: impact.y / image.height,
+          y: blob.y / image.height,
-          radius: impact.radius / scale,
+          radius: blob.radius / scale,
         );
       }).toList();
     } catch (e) {
@@ -498,6 +738,44 @@ class ImageProcessingService {
     }
   }
 
+  /// Fusionne les blobs qui se chevauchent en gardant le meilleur représentant
+  List<_Blob> _mergeOverlappingBlobs(List<_Blob> blobs) {
+    if (blobs.isEmpty) return [];
+
+    // Trier par score de qualité (circularité * fillRatio)
+    final sortedBlobs = List<_Blob>.from(blobs);
+    sortedBlobs.sort((a, b) {
+      final scoreA = a.circularity * a.fillRatio * a.size;
+      final scoreB = b.circularity * b.fillRatio * b.size;
+      return scoreB.compareTo(scoreA);
+    });
+
+    final merged = <_Blob>[];
+
+    for (final blob in sortedBlobs) {
+      bool shouldAdd = true;
+
+      for (final existing in merged) {
+        final dx = blob.x - existing.x;
+        final dy = blob.y - existing.y;
+        final distance = math.sqrt(dx * dx + dy * dy);
+        final minDist = math.min(blob.radius, existing.radius);
+
+        // Si les centres sont proches, c'est le même impact
+        if (distance < minDist * 1.5) {
+          shouldAdd = false;
+          break;
+        }
+      }
+
+      if (shouldAdd) {
+        merged.add(blob);
+      }
+    }
+
+    return merged;
+  }
+
   /// Detect dark spots with adaptive luminance range
   List<_Blob> _detectDarkSpotsAdaptive(
     img.Image image,

lib/services/opencv_impact_detection_service.dart

@@ -0,0 +1,119 @@
+/// Service de détection d'impacts utilisant OpenCV.
+///
+/// NOTE: OpenCV est actuellement désactivé sur Windows en raison de problèmes
+/// de compilation. Ce fichier contient des stubs qui permettent au code de
+/// compiler sans OpenCV. Réactiver opencv_dart dans pubspec.yaml et
+/// décommenter le code ci-dessous quand le support sera corrigé.
+library;
+
+// import 'dart:math' as math;
+// import 'package:opencv_dart/opencv_dart.dart' as cv;
+
+/// Paramètres de détection d'impacts OpenCV
+class OpenCVDetectionSettings {
+  /// Seuil Canny bas pour la détection de contours
+  final double cannyThreshold1;
+
+  /// Seuil Canny haut pour la détection de contours
+  final double cannyThreshold2;
+
+  /// Distance minimale entre les centres des cercles détectés
+  final double minDist;
+
+  /// Paramètre 1 de HoughCircles (seuil Canny interne)
+  final double param1;
+
+  /// Paramètre 2 de HoughCircles (seuil d'accumulation)
+  final double param2;
+
+  /// Rayon minimum des cercles en pixels
+  final int minRadius;
+
+  /// Rayon maximum des cercles en pixels
+  final int maxRadius;
+
+  /// Taille du flou gaussien (doit être impair)
+  final int blurSize;
+
+  /// Utiliser la détection de contours en plus de Hough
+  final bool useContourDetection;
+
+  /// Circularité minimale pour la détection par contours (0-1)
+  final double minCircularity;
+
+  /// Surface minimale des contours
+  final double minContourArea;
+
+  /// Surface maximale des contours
+  final double maxContourArea;
+
+  const OpenCVDetectionSettings({
+    this.cannyThreshold1 = 50,
+    this.cannyThreshold2 = 150,
+    this.minDist = 20,
+    this.param1 = 100,
+    this.param2 = 30,
+    this.minRadius = 5,
+    this.maxRadius = 50,
+    this.blurSize = 5,
+    this.useContourDetection = true,
+    this.minCircularity = 0.6,
+    this.minContourArea = 50,
+    this.maxContourArea = 5000,
+  });
+}
+
+/// Résultat de détection d'impact
+class OpenCVDetectedImpact {
+  /// Position X normalisée (0-1)
+  final double x;
+
+  /// Position Y normalisée (0-1)
+  final double y;
+
+  /// Rayon en pixels
+  final double radius;
+
+  /// Score de confiance (0-1)
+  final double confidence;
+
+  /// Méthode de détection utilisée
+  final String method;
+
+  const OpenCVDetectedImpact({
+    required this.x,
+    required this.y,
+    required this.radius,
+    this.confidence = 1.0,
+    this.method = 'unknown',
+  });
+}
+
+/// Service de détection d'impacts utilisant OpenCV
+///
+/// NOTE: Actuellement désactivé - retourne des listes vides.
+/// OpenCV n'est pas disponible sur Windows pour le moment.
+class OpenCVImpactDetectionService {
+  /// Détecte les impacts dans une image en utilisant OpenCV
+  ///
+  /// STUB: Retourne une liste vide car OpenCV est désactivé.
+  List<OpenCVDetectedImpact> detectImpacts(
+    String imagePath, {
+    OpenCVDetectionSettings settings = const OpenCVDetectionSettings(),
+  }) {
+    print('OpenCV est désactivé - utilisation de la détection classique recommandée');
+    return [];
+  }
+
+  /// Détecte les impacts en utilisant une image de référence
+  ///
+  /// STUB: Retourne une liste vide car OpenCV est désactivé.
+  List<OpenCVDetectedImpact> detectFromReferences(
+    String imagePath,
+    List<({double x, double y})> referencePoints, {
+    double tolerance = 2.0,
+  }) {
+    print('OpenCV est désactivé - utilisation de la détection par références classique recommandée');
+    return [];
+  }
+}

lib/services/target_detection_service.dart

@@ -1,8 +1,10 @@
 import 'dart:math' as math;
 import '../data/models/target_type.dart';
 import 'image_processing_service.dart';
+import 'opencv_impact_detection_service.dart';
 
 export 'image_processing_service.dart' show ImpactDetectionSettings, ReferenceImpact, ImpactCharacteristics;
+export 'opencv_impact_detection_service.dart' show OpenCVDetectionSettings, OpenCVDetectedImpact;
 
 class TargetDetectionResult {
   final double centerX; // Relative (0-1)
@@ -49,10 +51,13 @@ class DetectedImpactResult {
 
 class TargetDetectionService {
   final ImageProcessingService _imageProcessingService;
+  final OpenCVImpactDetectionService _opencvService;
 
   TargetDetectionService({
     ImageProcessingService? imageProcessingService,
-  }) : _imageProcessingService = imageProcessingService ?? ImageProcessingService();
+    OpenCVImpactDetectionService? opencvService,
+  })  : _imageProcessingService = imageProcessingService ?? ImageProcessingService(),
+        _opencvService = opencvService ?? OpenCVImpactDetectionService();
 
   /// Detect target and impacts from an image file
   TargetDetectionResult detectTarget(
@@ -254,4 +259,88 @@ class TargetDetectionService {
       return [];
     }
   }
+
+  /// Détecte les impacts en utilisant OpenCV (Hough Circles + Contours)
+  ///
+  /// Cette méthode utilise les algorithmes OpenCV pour une détection plus robuste:
+  /// - Transformation de Hough pour détecter les cercles
+  /// - Analyse de contours avec filtrage par circularité
+  List<DetectedImpactResult> detectImpactsWithOpenCV(
+    String imagePath,
+    TargetType targetType,
+    double centerX,
+    double centerY,
+    double radius,
+    int ringCount, {
+    OpenCVDetectionSettings? settings,
+  }) {
+    try {
+      final impacts = _opencvService.detectImpacts(
+        imagePath,
+        settings: settings ?? const OpenCVDetectionSettings(),
+      );
+
+      return impacts.map((impact) {
+        final score = targetType == TargetType.concentric
+            ? _calculateConcentricScoreWithRings(
+                impact.x, impact.y, centerX, centerY, radius, ringCount)
+            : _calculateSilhouetteScore(impact.x, impact.y, centerX, centerY);
+
+        return DetectedImpactResult(
+          x: impact.x,
+          y: impact.y,
+          radius: impact.radius,
+          suggestedScore: score,
+        );
+      }).toList();
+    } catch (e) {
+      print('Erreur détection OpenCV: $e');
+      return [];
+    }
+  }
+
+  /// Détecte les impacts avec OpenCV en utilisant des références
+  ///
+  /// Analyse les impacts de référence pour apprendre leurs caractéristiques
+  /// puis détecte les impacts similaires dans l'image.
+  List<DetectedImpactResult> detectImpactsWithOpenCVFromReferences(
+    String imagePath,
+    TargetType targetType,
+    double centerX,
+    double centerY,
+    double radius,
+    int ringCount,
+    List<ReferenceImpact> references, {
+    double tolerance = 2.0,
+  }) {
+    try {
+      // Convertir les références au format OpenCV
+      final refPoints = references
+          .map((r) => (x: r.x, y: r.y))
+          .toList();
+
+      final impacts = _opencvService.detectFromReferences(
+        imagePath,
+        refPoints,
+        tolerance: tolerance,
+      );
+
+      return impacts.map((impact) {
+        final score = targetType == TargetType.concentric
+            ? _calculateConcentricScoreWithRings(
+                impact.x, impact.y, centerX, centerY, radius, ringCount)
+            : _calculateSilhouetteScore(impact.x, impact.y, centerX, centerY);
+
+        return DetectedImpactResult(
+          x: impact.x,
+          y: impact.y,
+          radius: impact.radius,
+          suggestedScore: score,
+        );
+      }).toList();
+    } catch (e) {
+      print('Erreur détection OpenCV depuis références: $e');
+      return [];
+    }
+  }
 }

pubspec.yaml

@@ -35,7 +35,7 @@ dependencies:
   # Use with the CupertinoIcons class for iOS style icons.
   cupertino_icons: ^1.0.8
 
-  # Image processing with OpenCV (disabled for now due to build issues)
+  # Image processing with OpenCV (désactivé temporairement - problèmes de build Windows)
   # opencv_dart: ^2.1.0
 
   # Image capture from camera/gallery