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A method for storing and compressing motion information

A technology of motion information and compression method, applied in the field of video coding and decoding, can solve the problems of coding performance loss and performance loss, and achieve the effect of reducing performance loss and size

Active Publication Date: 2019-05-14
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The HEVC solution can reduce the size of the motion vector storage, however, it also brings a lot of loss to the coding performance
According to Yeping Su and Andrew Segall's proposal JCTVC-D072 "CE9: Reduced resolution storage of motion vector data", this technology will bring about 0.4% to 0.6% performance loss

Method used

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  • A method for storing and compressing motion information
  • A method for storing and compressing motion information
  • A method for storing and compressing motion information

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] figure 2 It is a flowchart of a method for storing and compressing motion information provided by an embodiment of the present invention. The motion information storage and compression method provided in this embodiment includes:

[0040] Step 1, determining the size of the motion information storage unit;

[0041] Specifically, a possible situation is that the motion information storage unit has a fixed size agreed upon by the implementation, such as a size of 16x16 pixels or a size of 8x8 pixels.

[0042] Step 2: According to the multiple sets of motion information included in the coverage area of ​​the motion information storage unit, a set of motion information is derived as the motion information of the motion information storage unit.

[0043] Specifically, a possible situation is that, according to the size of the motion information storage unit determined in step 1, all the motion information in the motion information storage unit can be obtained. In AVS and...

Embodiment 2

[0048] figure 2 It is a flowchart of a method for storing and compressing motion information provided by an embodiment of the present invention. The motion information storage and compression method provided in this embodiment includes:

[0049] Step 1, determining the size of the motion information storage unit;

[0050] Specifically, a possible situation is that the motion information storage unit has a fixed size agreed upon by the implementation, such as a size of 16x16 pixels or a size of 8x8 pixels.

[0051] Step 2: According to the multiple sets of motion information included in the coverage area of ​​the motion information storage unit, a set of motion information is derived as the motion information of the motion information storage unit.

[0052] Specifically, a possible situation is that, according to the size of the motion information storage unit determined in step 1, all the motion information in the motion information storage unit can be obtained. In AVS and...

Embodiment 3

[0056] figure 2 It is a flowchart of a method for storing and compressing motion information provided by an embodiment of the present invention. The motion information storage and compression method provided in this embodiment includes:

[0057] Step 1, determining the size of the motion information storage unit;

[0058] Specifically, a possible situation is that the motion information storage unit has a fixed size agreed upon by the implementation, such as a size of 16x16 pixels or a size of 8x8 pixels.

[0059] Step 2: According to the multiple sets of motion information included in the coverage area of ​​the motion information storage unit, a set of motion information is derived as the motion information of the motion information storage unit.

[0060] Specifically, a possible situation is that, according to the size of the motion information storage unit determined in step 1, all the motion information in the motion information storage unit can be obtained. In AVS and...

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Abstract

The invention discloses a motion information storage and compression method comprising the steps of determining the size of a motion information storage unit, and exporting a group of motion information as motion information of the motion information storage unit according to multiple groups of motion information contained in the coverage area of the motion information storage unit. By using the method, storage resources occupied by motion information storage is effectively reduced, and the performance of time-domain motion vector prediction is maintained.

Description

technical field [0001] The invention relates to video codec technology, in particular to a method for storing and compressing motion information in video codec. Background technique [0002] In video coding technology, the redundancy of video information in time and space is eliminated by using prediction in time domain and space domain. Inter-frame prediction technology is a technology commonly used in the field of video coding and decoding. Inter-frame prediction takes advantage of the fact that the information contained in the encoded frame and the current frame has great redundancy. Using motion estimation, it can greatly compress the video. [0003] During inter-frame prediction, in order to further reduce the code rate of the motion vector, the motion vector prediction technology is adopted. The motion information of the current frame can be predicted by the motion information of the same position block (collocated block) of the coded frame. In order to enable subse...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/426H04N19/51H04N19/577
Inventor 虞露邵振江
Owner ZHEJIANG UNIV