Patent ID: 8737466
Filing Date: 2014-05-27
Classification: G06T,H04N

Abstract:
1. A computer-implemented method for a decoder, the method comprising: receiving, at the decoder, at least a luminance QP (quantization parameter) value for a macroblock and a first chroma QP bias value for the macroblock, wherein the decoder comprises a luminance channel, a first chroma channel and a second chroma channel; utilizing, with the decoder, the luminance QP value and the first chroma QP bias value to determine a first chroma QP value for the macroblock by adding the first chroma QP bias value to the luminance QP value; decompressing the macroblock using the luminance QP value and the first chroma QP value, accessing an upsizing resolution factor for at least one channel of the macroblock; and converting the at least one channel to a full resolution using the upsizing resolution factor; wherein the first chroma QP value is less than a predetermined maximum value and greater than a predetermined minimum value, and wherein the first chroma QP value is determined for the first chroma channel.