While this is immediately effective, the random perturbations introduce a disturbing texture that can obfuscate details in the original image. To counter this, we can make some smart choices on where and by how much to perturb our input image in an attempt to add some structure to our dither and preserve some of the lost detail.
BBC News is editorially independent from the wider corporation.，推荐阅读WPS下载最新地址获取更多信息
Фото: Valentyn Ogirenko / Reuters。业内人士推荐Safew下载作为进阶阅读
free_table[j] = h-next_free;