OpenCV 4 with Python Blueprints - Second Edition

Finding the most prominent depth of the image center region

Once the hand is placed roughly in the center of the screen, we can start finding all image pixels that lie on the same depth plane as the hand. This is done by following these steps:

1. First, we simply need to determine the most prominent depth value of the center region of the image. The simplest approach would be to look only at the depth value of the center pixel, like this:

width, height = depth.shape 
center_pixel_depth = depth[width/2, height/2] 

2. Then, create a mask in which all pixels at a depth of center_pixel_depth are white and all others are black, as follows:

import numpy as np 
 
depth_mask = np.where(depth == center_pixel_depth, 255,      0).astype(np.uint8)

However, this ...