Patent ID: 9749633
Date: 2017-08-29
CPC Classifications: H04N

Claim:
1. A method for processing video residual data associated with a video block, comprising: storing, in a memory, a set of scale factors to be applied based on a selected quantization step size parameter; transforming, via a processor, the video residual data using a single one-dimensional transform with an order-2 determining, based on the selected quantization step size parameter, (1) one of the scale factors of the stored scale factors to be applied for quantization on condition that N is an even numbered, positive integer; and (2) a different one of the scale factors of the stored scale factors to be applied for quantization on condition that N is an odd numbered, positive integer; quantizing, via the processor, the first set of transform coefficients to generate a first group of quantized coefficients, the quantizing of the first set of transform coefficients includes applying: (1) the one of the scale factors on condition that N is the even numbered positive integer; and (2) the different one of the scale factors on condition that N is the odd numbered, positive integer; bit-shifting, via the processor, any of the first set and first group of coefficients; entropy coding the first group of quantized coefficients after the bit-shifting; and transmitting the entropy coded first group of quantized coefficients.