Introduction to matting
Cutting is one of the most common operations in image processing, which is to separate a picture or part of an image from the original picture or image and put it in a separate layer. This APP is divided into four sections: portrait, filter, editing and creation. Very suitable for fine-tuning personal art photos and ID photos. Fine-tuning is natural and the facial features are more exquisite and three-dimensional.
Principle of channel matting: channels include: color channel, ALPHA channel and spot color channel. Among them, the ALPHA channel is used to store the selection, and the ALPHA channel uses 8-bit gray scale between black and white to save the selection. Instead, we can use the black-and-white contrast in the ALPHA channel to make the choice we need.