Emanuele Feronato • 1/28/2026

Greedy Rectangle Merging: Turning Binary Grids into Simple Geometry – JavaScript example

This technical article details the greedy rectangle merging algorithm, a grid simplification technique that converts a 2D binary grid of 0s and 1s into a set of axis-aligned rectangles. It covers the algorithm's purpose for efficiency in rendering and collision detection, explains the greedy, local-decision approach, and discusses expansion strategies, all within the context of a JavaScript example.

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#JavaScript #optimization #grid