NON-SEPARABLE SECONDARY TRANSFORM FOR VIDEO CODING WITH REORGANIZING

摘要

Techniques are described in which a decoder is configured to reorganize a first 2-dimensional coefficient block as a first 1-dimensional coefficient vector according to a coefficient scanning order and apply a first inverse transform to the first 1-dimensional coefficient vector to generate a second 1-dimensional coefficient vector. The first inverse transform is a non-separable transform. The decoder is further configured to reorganize the first 1-dimensional coefficient vector as a second 2-dimensional coefficient block and apply a second inverse transform to the second 2-dimensional coefficient block to generate a residual video block. The second inverse transform converts the second 2-dimensional coefficient block from a frequency domain to a pixel domain. The decoder is further configured to form a decoded video block, wherein forming the decoded video block comprises summing the residual video block with one or more predictive blocks.

主权项

1. A method for decoding video data, the method comprising:
reorganizing a first 2-dimensional coefficient block as a first 1-dimensional coefficient vector according to a coefficient scanning order; applying a first inverse transform to the first 1-dimensional coefficient vector to generate a second 1-dimensional coefficient vector, the first inverse transform being a non-separable transform; reorganizing the first 1-dimensional coefficient vector as a second 2-dimensional coefficient block; applying a second inverse transform to the second 2-dimensional coefficient block to generate a residual video block, the second inverse transform converting the second 2-dimensional coefficient block from a frequency domain to a pixel domain; and forming a decoded video block, wherein forming the decoded video block comprises summing the residual video block with one or more predictive blocks.