feat(pose): add joint similarity visualization in skeleton drawing

pose_analyzer.py

@@ -93,6 +93,19 @@ class PoseSimilarityAnalyzer:
             
         final_similarity = (weighted_similarity / total_weight) * 100 if total_weight > 0 else 0
         return min(max(final_similarity, 0), 100)
+        
+    def calculate_joint_similarities(self, angles1, angles2):
+        """计算每个关节的相似度"""
+        joint_similarities = {}
+        if not angles1 or not angles2: return joint_similarities
+        
+        common_joints = set(angles1.keys()) & set(angles2.keys())
+        for joint in common_joints:
+            angle_diff = abs(angles1[joint] - angles2[joint])
+            similarity = math.exp(-(angle_diff ** 2) / (2 * (30 ** 2)))
+            joint_similarities[joint] = min(max(similarity * 100, 0), 100)
+        
+        return joint_similarities
 
     def add_similarity_score(self, score, timestamp=None):
         """Adds a similarity score to the history."""