While you are learning something, the best and mnemonic way to be aware of the details and possible utility behind is try to use different viewpoints on it, try to explain one thing in different languages or images, or even convince someone else the idea. And luckily, you have this “something” all along your life…
Then, we can make use of Nuke’s Disparity Generator to guess/generate one possible/plausible disparity channels just as below. This is some kind of coloring to make you see the disparity and you can use better way like B&W. But we are not the professional coloring scientific guys and it turns out we just get one cool image without any further intuitive utility.
Finally, I got some visualization and realize how bad it is for this generated/guessed disparity channel in this case. I kept learning a lot from this cause this visualization is so straightforward and interactive.