Canva has a web version and also a mobile app
This algorithm attempts to minimise numerically. Because of this, the quality of the dither produced by Knoll’s algorithm is much higher than any other of the N-candidate methods we have covered so far. It is also the slowest however, as it requires a greater per-pixel to be really effective. More details are given in Knoll’s now expired patent[3]. I have put together a GPU implementation of Knoll’s algorithm on Shadertoy here.
。业内人士推荐下载安装汽水音乐作为进阶阅读
The world stopped breathing and watched.
Фото: Efrem Lukatsky / AP