This image now contains a more subtle pattern. Here is my best efforts using that technique: In my photo editing program, there are distinct points of demarcation where the algorithm suddenly 'jumps' to the next level of blurring (probably caused by the spacing between the dots and the number of pixels included in the blurring algorithm at higher levels). I use a side-by-side before/after and keep increasing the blur amount until I get a balance between dot removal and detail removal. However, the best I have found so far is to simply use Gaussian Blur. I do a lot of photo scanning and have used various specialty filters. im not obsessed over getting this particular cover perfect, just interested in how to remove miore patterns generally. maybe the key to removal is in that?ĭon't worry. What I am wondering is, does anybody know how this works? If so, is there anything that can be used in Photoshop/AVISynth that would produce similar results? Surely the filter in some scanner software can't be that exceptionally special? When I look closely, there does seem to be some sort of pattern relating to colour. I remember my EPSON scanner's import GUI had options allowing for the removal of such patterns, which was pretty effective, it allowed you to select the printing DPI, and seemed to do more than just blur the image until the halftone was no longer visible. I tried filtering with the usual PhotoShop plug-ins (despeckle, remove noise, blur etc.) and then tried using a few avis filters (UnDot(), RemoveGrain(), MedianBlur(), HQDering(),) but could not seem to get rid of the 'overlaying' pattern without destorying 80% of the detail. (cropped -> 600圆00 w/bicubic -> desaturated -> re-sepia'd) But in this case when sized down to 600圆00 (the iTunes and generally accepted standard album art size) it still looked pretty damn bad. any cover that is from a printed case has it. Anyway, at 'M' and I found the following cover: Lately I have been adding cover art to my music collection (laborious task, especially if your perfectionist about it).

Moire remove gimp