Patent ID: 11900654
Assignee: HOME BOX OFFICE, INC.
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. A method, comprising:
determining, via a system comprising a processor, difference data representing differences between original video content and derived video content derived from the original video content, the determining comprising:
converting frames of the original video content into first edge pixel images, and converting corresponding frames of the derived video content into corresponding second edge pixel images;
selecting a source edge pixel image from the first edge pixel images, and selecting a corresponding edge pixel image from the second edge pixel mages;
comparing edge pixels in the source edge pixel image with edge pixels in the corresponding edge pixel image to determine mismatched edge pixels, wherein the comparing the edge pixels in the source edge pixel image with the edge pixels in the corresponding edge pixel image to determine the mismatched edge pixels comprises, selecting at least some of the edge pixels from the source edge pixel image, and for a selected edge pixel, searching the corresponding edge pixel image in a search window based on a counterpart pixel to determine whether the search window contains an edge pixel; and
reporting on the mismatched edge pixels as the difference data.