Merge pull request #856 from JanLipovsek/develop

added check for empty depth frame

Author: themarpe

examples/mixed/rotated_spatial_detections.py

@@ -106,7 +106,10 @@
         depthFrame = depth.getFrame() # depthFrame values are in millimeters
 
         depth_downscaled = depthFrame[::4]
-        min_depth = np.percentile(depth_downscaled[depth_downscaled != 0], 1)
+        if np.all(depth_downscaled == 0):
+            min_depth = 0  # Set a default minimum depth value when all elements are zero
+        else:
+            min_depth = np.percentile(depth_downscaled[depth_downscaled != 0], 1)
         max_depth = np.percentile(depth_downscaled, 99)
         depthFrameColor = np.interp(depthFrame, (min_depth, max_depth), (0, 255)).astype(np.uint8)
         depthFrameColor = cv2.applyColorMap(depthFrameColor, cv2.COLORMAP_HOT)