Back to results
US 12,771,862 B2Granted
Encoding and decoding HDR videos
AssigneeKoninklijke Philips N.V.
InventorsJong-Ki Han, Jae-Yung Lee
Life of this patent
Estimating the term…
Abstract
The present invention relates to a video signal decoding method and apparatus therefor. A decoding method according to an embodiment of the present invention comprises: setting a structure of a coding block constituting a current image; setting a structure of transform blocks corresponding to the coding block; and generating a prediction signal by using the transform blocks, and wherein the coding block includes any one or more blocks of a square block and a non-square block.
Claims4
A method of video decoding comprising:
- receiving a bitstream,
- wherein the bitstream comprises compressed video data and a transform region information,
- wherein the compressed video data comprises a non-square transform block,
- wherein the transform region information indicates a first transform region and a second transform region in the transform block,
- wherein the first transform region comprises a first group of transform coefficients,
- wherein the second transform region comprises a second group of transform coefficients,
- wherein the first group of transform coefficients have lower frequencies than the second group of transform coefficients;
- partitioning the transform block into the first transform region and the second transform region based on the transform region information;
- obtaining a scan method for the first transform region and the second transform region;
- wherein the scan method is obtained from at least two scan methods;
- and
- scanning coefficients in the first transform region and the second transform region according to the scan method.
9 more elements
A video decoding apparatus comprising:
- a memory circuit, wherein the memory circuit is arranged to store image data;
- a receiving circuit,
- wherein the receiving circuit is arranged to receive a bitstream,
- wherein the bitstream comprises compressed video data and a transform region information,
- wherein the compressed video data comprises a non-square transform block,
- wherein the transform region information indicates a first transform region and a second transform region in the transform block,
- wherein the first transform region comprises a first group of transform coefficients,
- wherein the second transform region comprises a second group of transform coefficients,
- wherein the first group of transform coefficients have lower frequencies than the second group of transform coefficients;
- and
- a transform circuit,
- wherein the transform circuit is arranged to partition the transform block into the first transform region and the second transform region based on the transform region information,
- wherein the transform circuit is arranged to obtain a scan method for the first transform region and the second transform region,
- wherein the scan method is obtained from at least two scan methods;
- and
- wherein the transform circuit is arranged to scan coefficients in the first transform region and the second transform region according to the scan method.
13 more elements
A video encoding apparatus comprising:
- a memory circuit, wherein the memory circuit is arranged to store image data;
- a receiving circuit, wherein the receiving circuit arranged to receive an input picture to be compressed;
- a transform circuit, wherein the transform circuit is arranged to determine at least one non-square transform block of the input picture;
- a circuit, wherein the circuit is arranged to write transform region information into a bitstream,
- wherein the transform region information indicates a first transform region and a second transform region in the transform block,
- wherein the first transform region comprises a first group of transform coefficients,
- wherein the second transform region comprises a second group of transform coefficients,
- wherein the first group of transform coefficients have lower frequencies than the second group of transform coefficients,
- wherein the transform circuit is arranged to partition the transform block into the first transform region and the second transform region based on the transform region information,
- wherein the transform circuit is arranged to obtain a scan method for the first transform region and the second transform region;
- wherein the scan method is obtained from at least two scan methods,
- wherein the transform circuit is arranged to scan coefficients in the first transform region and the second transform region according to the scan method;
- and
- an output circuit, wherein the output circuit is arranged to output the bitstream.
11 more elements
A method of encoding video data, comprising
- receiving an input picture to be compressed;
- determining at least one non-square transform block of the input picture;
- writing transform region information into a bitstream,
- wherein the transform region information indicates a first transform region and a second transform region in the transform block,
- wherein the first transform region comprises a first group of transform coefficients,
- wherein the second transform region comprises a second group of transform coefficients,
- wherein the first group of transform coefficients have lower frequencies than the second group of transform coefficients,
- partitioning the transform block into the first transform region and the second transform region based on the transform region information;
- obtaining a scan method for the first transform region and the second transform region, wherein the scan method is obtained from at least two scan methods;
- scanning coefficients in the first transform region and the second transform region according to the scan method;
- and
- outputting the bitstream.
9 more elements
Dependencies are inferred from the claim text.