Patent ID: 8049817
Filing Date: 2011-11-01
Classification: H04N

Abstract:
1. A method for calculating an interlace artifact in a motion picture, the motion picture comprising one or more frames defined at a predefined interval of time, each of the one or more frames comprising one or more fields, each of the one or more fields comprising one or more pixels, the method comprising: determining one or more differences between the one or more pixels in a first field of the one or more fields and the one or more pixels in a second field of the one or more fields; comparing a maximum value of the one or more differences with a first predefined threshold; calculating one or more edges for the one or more pixels in the first field based on the comparison of the maximum value with the first predefined threshold, wherein calculating the one or more edges comprises calculating one or more edge gradients of the calculated one or more edges; comparing a magnitude of each of the one or more edge gradients with a second predefined threshold; identifying one or more edge pixels of the one or more pixels in the first field where an edge gradient magnitude of the one or more edge pixels exceeds the second predefined threshold; calculating a set of edge pixels of the one or more edge pixels in the first field, wherein one or more sets of pixels of the one or more pixels in the second field are identified based on a comparison of the one or more pixels in the second field with the set of edge pixels in the first field; calculating displacement of the set of edge pixels in the first field with respect to each of the one or more sets of pixels in the second field, wherein the displacement is calculated by calculating one or more motion vectors for the set of edge pixels; and calculating the interlace artifact, wherein the interlace artifact is calculated using the calculated displacement, and wherein the interlace artifact being calculated is based on a number of the one or more edge pixels in the set of edge pixels.