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1. Find a piece of white paper and handwritten signature. (Ignore my ugly words)
2. Open PS, open the picture
3. Click 图像-> 调整->色阶
As for the two values, there is no absolute usable value, and you need to adjust the brightness of the photos you take.
The effect is roughly as follows (in simple terms, it is to make your background super white and the color of the font more obvious).
4. Click 选择->色彩范围
The effect after adjusting the color tolerance is roughly as follows.
5. Click 编辑->定义画笔预设
After saving, just click on the brush and select the [brush 1] just now to use it willfully.
Effect
