Patent ID: 7376269

Claim:
A method of detecting image quality defects, comprising: obtaining an electronic image including electronic image data; rendering an image based on the electronic image data; capturing the rendered image, the captured image including captured image data; registering the electronic image with the captured image; identifying at least one region of interest in the electronic image; and comparing the electronic image data of the at least one region of interest in the electronic image and the captured image data of a corresponding region to determine a colorant error, wherein rendering the image comprises performing a preliminary analysis of the electronic image data to determine eligibility for the comparison, the performing a preliminarily analysis comprising (i) determining if an amount of coverage of the electronic image data exceeds a predetermined threshold value, (ii) determining if there are enough distinct features in the electronic image data for registration, and (iii) determining if an amount of the current image data is within a predetermined range in at least one color separation.