diff --git a/point_diff_main/calculate_diff3.0.py b/point_diff_main/calculate_diff3.0.py
index e060251..4176b34 100644
--- a/point_diff_main/calculate_diff3.0.py
+++ b/point_diff_main/calculate_diff3.0.py
@@ -173,8 +173,8 @@ def visualize_result(image, keypoints, bbox, fixed_point, offset_info, save_path
 
 # ====================== 主函数 ======================
 
-def calculate_offset_from_image(image_path, visualize=False):
-    orig = cv2.imread(image_path)
+def calculate_offset_from_image(orig, visualize=False):
+
     if orig is None:
         return {'success': False, 'message': f'Failed to load image: {image_path}'}
 
@@ -213,7 +213,8 @@ def calculate_offset_from_image(image_path, visualize=False):
 # ====================== 示例调用 ======================
 if __name__ == "__main__":
     image_path = "11.jpg"
-    result = calculate_offset_from_image(image_path, visualize=False)
+    orig = cv2.imread(image_path)
+    result = calculate_offset_from_image(orig, visualize=False)
     if result['success']:
         print(f"Center point: ({result['cx']:.1f}, {result['cy']:.1f})")
         print(f"Offset: DeltaX={result['dx_mm']:+.2f} mm, DeltaY={result['dy_mm']:+.2f} mm")