1, write your name on white paper, take a photo with your mobile phone and send it to your computer.

2. Open PS, import photos of handwritten names, and cut off the blank parts around the signature to reduce the interference of noise.

3. Copy a layer, enter the channel interface, and drag the green channel to the new channel button to create a new green channel.

4. Press Ctrl+M to open the curve tool and adjust the contrast of the picture, so that the signature becomes pure black and the white area becomes pure white.