I am using image processing for converting thermographic image (Recorded by IR Camera) to amplitude image and phase image. Based on the contrast of image (Temperature, Phase angle), the defects present in the test sample has been detected and the their defects parameters size and depth could be calculated. For more details, you can go through my publications...
I did some very basic image processing stuff to detect (and eventually recognize) superimposed text on video frame. Fairly beginner stuff, in case you're interested...