Update app.py

app.py

@@ -51,11 +51,13 @@ def process_image(image: Image.Image):
 
     # 5) vectorized depth-based blur
     img_np = np.array(image).astype(np.float32)
-    # two extremes: no blur for near, heavy blur for far
-    near_blur = img_np                          
-    far_blur  = cv2.GaussianBlur(img_np, (81,81), 20)
-    alpha = depth_norm[...,None]
-    combined = near_blur * (1.0 - alpha) + far_blur * alpha
+    near_blur = img_np
+    far_blur = cv2.GaussianBlur(img_np, (81,81), 20)
+
+    # high=foreground, low=background
+    alpha    = depth_norm[...,None]               
+    combined = near_blur * alpha + far_blur * (1.0 - alpha)
+
     lens_blur = Image.fromarray(np.clip(combined,0,255).astype(np.uint8))
 
     return image, output_blur, lens_blur