I’m having problems scanning some of my wedding pictures. The pictures that have been taken by my friends and family are fine, but the ones taken by the official photographer have a sort of moiré pattern over them.
You didn’t mention what approaches you’ve already tried, you might try searching with google for something like "remove moire pattern photoshop". I found these, some of them might work for you.
http://graphicssoft.about.com/cs/photoshop/ht/apsremovemoire .htm http://desktoppub.about.com/cs/moire/ http://answers.google.com/answers/main?cmd=threadview&id =224671 Quoting from the 1st page
1. Scan the image at a resolution approximately 150-200% higher than what you need for final output.
2. Go to Filter > Noise > Median.
3. Use a radius between 1-3. Typically the higher the quality of the source, the lower the radius can be. Use your own judgement, but you will probably find that 3 works well for newspapers, 2 for magazines, and 1 for books.
4. Go to Image > Image Size (Image > Resize > Image Size in Elements) and resample to the desired image size and resolution using the bicubic resampling option.
5. Make sure you are zoomed to 100% magnification.
6. Go to Filter > Sharpen > Unsharp Mask.
7. Exact settings will depend on the image resolution, but these settings are a good starting point: Amount 50-100%, Radius 1-3 pixels, Threshold 1-5. Use your eye as the final judge.
Tips:
1. If you still see a pattern after applying the Median filter, try a slight gaussian blur before resampling. Apply just enough blur to reduce the pattern.
2. If you notice halos or glows in the image after using Unsharp Mask, go to Edit > Fade. Use settings: 50% Opacity, Mode Luminosity. (Not available in Elements.)