How to change the background color of photos with PS? The key is what about the hair?

1, open the software, import the picture, and copy it layer by layer to prevent the original picture from being destroyed.

2. Select the background color with magic wand and other selection tools.

3. execute the "select-deselect" command to select a person, or press the shortcut key shift+ctrl+I. ..

4. Execute the "Select-Adjust Edge" command.

5. Adjust the parameters to hide the background color.

6. Create a new layer, fill it with the required background color, and place it on the portrait layer.

Extended data

Principle of PS channel matting

Channels are actually distinguished by colors. Simply put: different colors in the channel form different selection ranges.

The picture can be regarded as RGB image mode, while RPG means that the whole picture is only composed of three colors: R (red, red), G (green, green) and B (blue), and other colors are mixed by these three colors in different proportions.

Principle of color superposition: all colors can be superimposed by these three colors, when equal amounts of red, green and blue are mixed together. White appeared. It's black when all three don't appear. Gray is a mixture of a certain amount of white and a certain amount of black.

The purpose of using the "color scale" command is to make the image black and white. The greater the difference in brightness values between pixels, the better the use of channel matting.