fix: dilation kernel size is off by one pixel in buffered

[andrewwhitecdw]

This PR addresses the following issue in exts/omni.ext.mobility_gen/omni/ext/mobility_gen/occupancy_map.py: dilation kernel size is off by one pixel in buffered.

Changes

• exts/omni.ext.mobility_gen/omni/ext/mobility_gen/occupancy_map.py: dilation kernel size is off by one pixel in buffered.

Details

Before:

        radius = buffer_distance_pixels
        diameter = radius * 2
        kernel = np.zeros((diameter, diameter), np.uint8)
        cv2.circle(kernel, (radius, radius), radius, 255, -1)

After:

        radius = buffer_distance_pixels
        diameter = radius * 2 + 1
        kernel = np.zeros((diameter, diameter), np.uint8)
        cv2.circle(kernel, (radius, radius), radius, 255, -1)