Removing the scan lines from a matt surface photo in photoshop.

You need the Fourier transformation plugin for photoshop.

Link to plugin and how to install it:
http://www.retouchpro.com/forums/software/33084-here-fft-64-bit-photoshop-2.html

Tutorial 1 on using plugin
http://retouchpro.com/tutorials/?m=show&id=185

Tuorial 2 on how to blend the two images mentioned in tutorial 1
http://my.safaribooksonline.com/book/photo-and-graphic-manipulation/9780470612651/work-with-layers-selections-and-masks/automatically_blend_multiple_images_to_g