Problem 1368. Create an 8-color version of an image

This problem was inspired by a tweet I saw from @MATLAB regarding The Warholer.

Given an MxNx3 array (A) representing an image and a threshold for each channel (r/g/b), generate a new array (B) whose elements are 255 if greater than the threshold for that channel or 0 otherwise. This means the new "image" will only have 8 colors.

You may assume that the inputs are on the interval [0,255].

Solve

Solution Stats

44.65% Correct | 55.35% Incorrect
Last Solution submitted on Nov 13, 2025

Problem Comments

Solution Comments

Show comments

Problem Recent Solvers61

Suggested Problems

More from this Author44

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!