Update app.py

app.py

@@ -31,6 +31,9 @@ class DicomAnalyzer:
             rescale_intercept = getattr(dicom_data, 'RescaleIntercept', 0)
             image = (image * rescale_slope) + rescale_intercept
 
+            # Store original image for analysis
+            original_image = image.copy()
+
             # Normalize for display
             image_display = cv2.normalize(image, None, 0, 255, cv2.NORM_MINMAX).astype(np.uint8)
 
@@ -38,7 +41,7 @@ class DicomAnalyzer:
             if len(image_display.shape) == 2:
                 image_display = cv2.cvtColor(image_display, cv2.COLOR_GRAY2BGR)
 
-            return image, image_display, dicom_data
+            return original_image, image_display, dicom_data
         except Exception as e:
             print(f"Error loading DICOM file: {str(e)}")
             return None, None, None
@@ -187,9 +190,10 @@ class DicomAnalyzer:
     def update_zoom(self, zoom_factor):
         self.zoom_factor = zoom_factor
         if self.current_image1 is not None:
+            height, width = self.current_image1.shape
             resized = cv2.resize(self.image_display1, None, fx=self.zoom_factor, fy=self.zoom_factor, interpolation=cv2.INTER_LINEAR)
-            self.offset_x = (resized.shape[1] - self.image_display1.shape[1]) // 2
-            self.offset_y = (resized.shape[0] - self.image_display1.shape[0]) // 2
+            self.offset_x = (resized.shape[1] - width * self.zoom_factor) // 2
+            self.offset_y = (resized.shape[0] - height * self.zoom_factor) // 2
             return resized
         return self.image_display1
 
@@ -299,4 +303,4 @@ def create_interface():
 
 if __name__ == "__main__":
     interface = create_interface()
-    interface.launch()
+    interface.launch()