Patent ID: 7839928
Filing Date: 2010-11-23
Classification: G06F,H04N

Abstract:
1. A method for decoding video or image information with a computing device that implements a video or image decoder, the method comprising: receiving quantized transform coefficients at the computing device; with the computing device, de-quantizing the received quantized transform coefficients into de-quantized transform coefficients, wherein the de-quantizing scales the quantized transform coefficients by scaling factors selected from plural groups of scaling factors, wherein the quantized transform coefficients are logically organized in a block, wherein the inverse transform process is a two-dimensional inverse transform with row and column inverse transforms, the two-dimensional inverse transform having different norms, and wherein selection between the plural groups for the de-quantizing is based on relative coefficient position within the block; and with the computing device, applying an inverse transform process to the de-quantized transform coefficients to generate reconstructed information therefrom.