Patent ID: 8305650

Claim:
A system for detecting changes in images comprising: a computing device configured to receive an original grid representing an original image; and an image detection software program, said image detection software program for detecting changes between said original image and a processed image by: receiving a description of said original grid, said description including a plurality of original grid line intersection coordinates associated therewith; receiving said processed image and a set of tolerance parameters associated therewith, said processed image being represented as pixels, said set of tolerance parameters including a predefined vertical tolerance and a predefined horizontal tolerance; scanning horizontally the pixels of said processed image into horizontal runs, the horizontal runs determining a plurality of vertical coordinates of said processed image, saving each of said plurality of vertical coordinates within said predefined vertical tolerance; scanning vertically the pixels of said processed image into vertical runs, the vertical runs determining a plurality of horizontal coordinates of said processed image, saving each of the horizontal coordinates within said predefined horizontal tolerance; determining a plurality of processed intersection coordinates, said plurality of processed intersection coordinates being determined by calculating the intersections of each of the saved plurality of horizontal and vertical coordinates; comparing a portion of the plurality of processed intersection coordinates to a portion of the plurality of original grid line intersection coordinates; and providing an image comparison result of the comparison of the plurality of processed intersection coordinates and the plurality of original grid line intersection coordinates.