Final rendering:
Open this photo with light speed noise on the face. Through our observation, we found that the noise is mainly concentrated on the face of the character, while there is no noise on the background. In order to ensure that the background color remains unchanged, we can first The characters with noise are cut out separately, and then they are merged after the noise is removed.
After cutting out the characters with noise, click to go to the channel panel. After checking, it is found that the noise is mainly concentrated on the blue channel.
At this time, we can first make a copy of the green channel, and then delete the blue channel with noise.
