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Video encoding/decoding method and device using segmentation limitation for chroma block, and method for transmitting bitstream

A chrominance block and image decoding technology, applied in digital video signal modification, image communication, electrical components, etc., can solve the problems of information transmission or bit transmission cost and storage cost increase

Pending Publication Date: 2021-10-29
LG ELECTRONICS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

An increase in the amount of transmitted information or bits leads to an increase in transmission costs and storage costs

Method used

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  • Video encoding/decoding method and device using segmentation limitation for chroma block, and method for transmitting bitstream
  • Video encoding/decoding method and device using segmentation limitation for chroma block, and method for transmitting bitstream
  • Video encoding/decoding method and device using segmentation limitation for chroma block, and method for transmitting bitstream

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0243] As mentioned above, the minimum width or height of a chroma block needs to be limited to a length of four samples. The encoding / decoding apparatus according to an embodiment may determine whether a predetermined partition mode is allowed for a current block based on whether the current block is a chroma block or a width or height of the current block. In the following, a decoding device will be described, but the following description applies to an encoding device accordingly.

[0244] Figure 21 is a view illustrating a method of determining whether vertical trident splitting (SPLIT_TT_VER) is permitted for a current block by a decoding device. The decoding apparatus according to an embodiment may determine whether a current block is a chroma block (S2110). The decoding device may check the value of the cIdx parameter specifying the color component of the current block to determine whether the current block is a chroma block. When the value of cIdx is 0, the decodin...

Embodiment 2

[0251] As mentioned above, the minimum width or height of a chroma block needs to be limited to a length of four samples. In the following, reference will be made to Figure 22 A method of restricting the horizontal trisection of a current block by the encoding / decoding apparatus according to the embodiment is described.

[0252] Figure 22 is a view illustrating a method of determining whether horizontal trident splitting (SPLIT_TT_HOR) is permitted for a current block by a decoding device. The decoding apparatus according to an embodiment may determine whether a current block is a chroma block (S2210). As described above, the decoding device may check the value of the cIdx parameter specifying the color component of the current block to determine whether the current block is a chroma block.

[0253] Next, the decoding apparatus according to an embodiment may determine whether the height of the current block is equal to or less than a length of 8 samples (S2220). When the...

Embodiment 3

[0258] As mentioned above, the minimum width or height of a chroma block needs to be limited to a length of four samples. In the following, reference will be made to Figure 23 A method of restricting horizontal binary segmentation of a current block by an encoding / decoding apparatus according to an embodiment is described.

[0259] Figure 23 is a view illustrating a method of determining whether horizontal binary splitting (SPLIT_BT_HOR) is permitted for a current block by a decoding device. The decoding apparatus according to an embodiment may determine whether a current block is a chroma block (S2310). As described above, the decoding device may check the value of the cIdx parameter specifying the color component of the current block to determine whether the current block is a chroma block.

[0260] Next, the decoding apparatus according to an embodiment may determine whether the height of the current block is equal to or less than a length of 4 samples (S2320). When t...

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Abstract

Provided are a video encoding / decoding method and device. A video decoding method performed by a video decoding device according to the present disclosure may comprise: a step for determining whether a predetermined segmentation is allowed for a current block on the basis of the size of the current block; a step for obtaining information about the segmentation of the current block on the basis of whether the predetermined segmentation is allowed; a step for segmenting the current block on the basis of the information about the segmentation of the current block; and a step for decoding the current block. Whether the predetermined segmentation is allowed may be determined on the basis of whether the width or height of the current block is equal to a predetermined sample length.

Description

technical field [0001] The present disclosure relates to an image encoding / decoding method and apparatus, and a method of transmitting a bit stream, and more particularly, to a method and apparatus for encoding / decoding an image using restrictions on partitioning of chroma blocks, and transmitting A method of a bitstream generated by the image encoding method / apparatus of the present disclosure. Background technique [0002] Recently, demands for high-resolution and high-quality images, such as high-definition (HD) images and ultra-high-definition (UHD) images, are increasing in various fields. As the resolution and quality of image data increase, the amount of information or bits to be transmitted relatively increases compared with existing image data. An increase in the amount of transmitted information or bits leads to an increase in transmission costs and storage costs. [0003] Therefore, efficient image compression techniques are required to efficiently transmit, sto...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/119H04N19/186H04N19/132H04N19/122H04N19/109H04N19/503
CPCH04N19/119H04N19/186H04N19/136H04N19/176H04N19/132H04N19/122H04N19/109H04N19/503H04N19/137H04N19/159H04N19/593H04N19/96
Inventor 张炯文朴婡利南廷学
Owner LG ELECTRONICS INC