To provide an image processing evaluation system capable of quickly and accurately analyzing the state of pixel deviation and pixel omission occurring by line units.

In this image processing evaluation system 1 for analyzing the pixel deviation of an output image for an input image, an input pixel in one line in input images is compared with the output pixel of an output image corresponding to one line. A pixel position deciding means 5 of the image processing evaluation system 1 is provided with a pixel value comparing means, a discontinuous removing means, a matching pixel count means, a number of matching pixel peak deciding means and a matching position retrieving means.