How to remove the background color of the gradual change of the picture in photography, that is, the color of the light, step by step is the best.

Suppose my picture is like this, because of the point light source, the center is bright and the edges are dark. Open this picture with ps cs6.

See the figure below. Select the foreground color from the red circle and the background color from the green circle.

2. Create a new 1 layer, and use the circular gradient tool to draw a gradient background in the original image, as shown below.

3. Change the blending mode of layer 1 to split.

It's a little flawed, but it's enough for me. As long as it is carefully adjusted, the degree of reduction can be higher. Sprinkle flowers.