Self avoiding random walk for pixel modification

Hello everyone. I have a problem, explained below. I expect your kind help, thank you. I have a 2D spatial coordinates of a true colour image. Now I need to generate a self avoiding random walk to modify the pixels. A criteria is to avoid the pixels that have been already modified. How to approach for it? I am new in this approach.

[Adam Danz]

There are lots of random walk algorithms already layed out within the forum.

• https://www.mathworks.com/matlabcentral/answers/502466-generate-a-random-path-between-two-points
• https://www.mathworks.com/matlabcentral/answers/502466-generate-a-random-path-between-two-points
• https://www.mathworks.com/matlabcentral/answers/444374-self-avoiding-random-walk-help
• and more (search the forum for random walk

Study those methods and try to get a sense of the big picture before starting to implement the algorithm in your code. If you have a specific problem, come back to the forum (or this thread) for specific questions.