How to change the background of a photo

Changing the background of a photo means removing the foreground and filling the background with the desired color.

There are no specific steps in matting, but comprehensive operation according to the specific situation of the image, and there are no fixed steps. Specific matting techniques must be adopted according to the specific conditions of the image.

1. If the color contrast between the foreground and the background is large, the color range can be used to extract.

2. If one of the channels is black and white, it can be extracted by the channel method.

3. If the boundary between foreground and background is obvious, you can use the magic wand tool to deal with it.

4. If the boundary is not obvious and cannot be determined, you can use the pen tool to extract it.

5. If the boundary is complex, such as hair, you can use the "Knockout 2" filter to extract it.

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