Update app.py

app.py

@@ -15,7 +15,7 @@ def depthMap(imgL,imgR):
   stereoMatcher.setSpeckleWindowSize(45)
   disparity = stereoMatcher.compute(imgL,imgR)
   depth_map = np.zeros_like(disparity, dtype=np.float32)
-  depth_map[disparity_map > 0] = 0.1 * 500 / disparity[disparity > 0]
+  depth_map[disparity > 0] = 0.1 * 500 / disparity[disparity > 0]
   gray = plt.get_cmap('gray')
   disparity = disparity - np.min(disparity)
   disparity = disparity / np.max(disparity)