Cleverly remove moire on scanned images

Repairing a picture is usually performed in a Gaussian blur in the channel, or by applying an appropriate force of the smearing tool. The effect is not always satisfactory.

The following describes a repair method: After rotating the mesh to horizontal, copy it to three layers as follows:

Upper: vertical dynamic blur 0.5, transparent 70;

Middle: Move two pixels up, brightness mode overlay, transparent 65;

Lower layer: Original unchanged

The uppermost layer: After the above three layers are copied (retaining the original three layers), they are combined, and after contrast is added, they are superimposed in lightness mode.

After the above work is completed, rotate it back again.

This approach preserves the original features of the image as much as possible.