Patent ID: 7944971
Filing Date: 2011-05-17
Classification: H04N

Abstract:
1. A method of encoding a particular section of an image of a video signal that includes a plurality of successive images, each image comprising a plurality of sections, each section comprising a set of sub-sections, each sub-section having a set of image pixel values and an energy value, the method comprising: determining whether the sub-section energy values in the particular section are centered about a same value; using a first equation to compute a first metric score for the particular section when the particular section's sub-section energy values are centered about the same value; using a second equation to compute a second metric score for the particular section when the particular section's sub-section energy values are not centered about the same value, wherein the second equation computes the second metric score as a section energy that does not discount an average value of any sub-section's image pixel values; selecting an encoding scheme from a set of encoding schemes based on the computed metric score, the set of encoding schemes comprising an intrablock encoding scheme that encodes the particular section without reference to any other section and an interblock encoding scheme that encodes the particular section by reference to at least one section of another image; and encoding the particular section according to the selected encoding scheme.