为何两款Matlab逐像素图像处理脚本耗时差异近一倍？

Putting it all together: the combination of costly floating-point division, double-precision memory overhead, and more complex branching is why your second script runs nearly twice as slow. The first script's simple, integer-based linear operations are far more CPU-efficient.

内容的提问来源于stack exchange，提问作者Naseeb Gill