: How to fill with similar colours? I have this image that have been damaged by JPG, and would very much like to restore it, as if it had never been compressed with JPG. Can someone help

@Sent7350415

If this image is representative of your other images, with large, flat areas of color, then a simple color quantize can give a good result. In the sample images there are only three intended colors: two shades of grey, and yellow.

Open the image in Photoshop, and choose Image > Mode > Indexed Color

Set:


Colors: 3
Forced: None
Transparency: Unchecked
Dither: None


Then, select Palette: Custom...

Change the three colors to:

363636
f8df2c
282325

And apply. You should get this:

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@Jennifer810

My approach would be to use Select > Color Range:


Eyedropper a clean area of the yellow to make it the foreground color. Be sure to set the sampling to 3x3 or 5x5, not single pixel.
Choose Select > Color Range and click the "+" icon in the dialog. Work with the image until all the icon pixels are selected but none of the background (should be easy).
Ctl/Cmd-J to copy the selected area to a new layer.
Add a layer below this and fill with black.
You can Zoom in and clean up any rough bits with a single-pixel eraser tool, but I suspect that won't be necessary.

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