Magenta areas identify all the pixels that will be taken as white in the meanwhile cyan areas identify all the pixels which value will be considered as black.
Magenta areas identify all the pixels that will be taken as white in the meanwhile cyan areas identify all the pixels which value will be considered as black.
紫红色部分对应了图中所有白色像素位置，同时青绿色部分对应了图中所有黑色像素位置。