Unlock instant, AI-driven research and patent intelligence for your innovation.

A video encoding and decoding method and device

A video encoding and encoding technology, applied in the field of video encoding, can solve the problem of low encoding compression ratio

Active Publication Date: 2019-04-23
LENOVO (BEIJING) LTD
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Embodiments of the present invention provide a video encoding and decoding method and device, which are used to solve the problem of relatively low encoding compression in the prior art

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A video encoding and decoding method and device
  • A video encoding and decoding method and device
  • A video encoding and decoding method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0049] An embodiment of the present invention provides a video coding method, including: calculating a hash value of a first coding unit; wherein, the first coding unit is obtained by dividing the largest coding unit, or the first coding unit is the largest coding unit The unit itself, the largest coding unit is obtained by dividing the video frame to be encoded, the size of the largest coding unit is a first size, and the first size is greater than 64*64; according to the hash value of the first coding unit, Selecting a second coding unit that matches the first coding unit; adding position information of the second coding unit to the coded stream, so as to obtain the second coding unit according to the position information during decoding, and according to the The second coding unit reconstructs the first coding unit.

[0050]An embodiment of the present invention provides a video coding method, which expands the size of the maximum coding unit from 64*64 in the prior art, so...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a video coding method for improving a coding compression ratio. The method comprises: a hash value of a first coding unit is calculated, wherein the first coding unit is obtained by dividing a maximum coding unit or is the maximum coding unit that is obtained by dividing a to-be-coded video frame, and the dimension of the maximum coding unit is a first dimension that is larger than 64*64; according to the hash value of the first coding unit, a second coding unit matching the first coding unit is selected; and position information of the second coding unit is added into a coding stream, and thus the second coding unit can be obtained according to the position information during decoding, and the first coding unit is reconstructed based on the second coding unit. In addition, the invention also discloses a video decoding method and corresponding apparatuses.

Description

technical field [0001] The present invention relates to the technical field of video coding, in particular to a video coding and decoding method and device. Background technique [0002] HEVC (High Efficiency Video Coding, high-efficiency video coding) is a new video compression standard that can replace the H.264 / AVC (a video coding standard) coding standard to a certain extent. [0003] HEVC can increase the compression efficiency of 1080P video by about 50%, which means that the quality of the video will increase a lot, and it can save a lot of network bandwidth. For consumers, they can enjoy higher quality video content . [0004] However, in the prior art, many applications such as remote desktop access, remote gaming, and cloud computing have become very common. An important feature of such applications is that information such as text and computer-generated images are mixed in natural videos. Information such as text and computer-generated images may often repeat ce...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/119H04N19/176H04N19/44
Inventor 姜东张学荣武亚强
Owner LENOVO (BEIJING) LTD