Supercharge Your Innovation With Domain-Expert AI Agents!

Rapid intra-frame mode selection method suitable for downhole distribution type video encoding

A distributed video and intra-frame mode technology, which is applied in the field of fast intra-frame mode selection and H.264 intra-frame mode selection, can solve problems such as high algorithm complexity, and achieve the effect of solving complexity and improving encoding speed

Active Publication Date: 2015-03-25
XUZHOU JIANGMEI TECH
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the H.264 / AVC coding standard, in order to improve the intra-frame coding efficiency, an intra-frame prediction algorithm is introduced. Although this algorithm can eliminate the spatial redundancy of images very well, this intra-frame prediction algorithm has extremely high algorithm complexity. Spend

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
  • Rapid intra-frame mode selection method suitable for downhole distribution type video encoding
  • Rapid intra-frame mode selection method suitable for downhole distribution type video encoding
  • Rapid intra-frame mode selection method suitable for downhole distribution type video encoding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0028] The present invention will be described in detail below in conjunction with specific embodiments.

[0029] Such as figure 1 As shown, a fast intra-frame prediction mode selection method mainly has the following steps:

[0030] A. When encoding the first two I-frames of the video sequence, use the H.264 / AVC full search algorithm for initial prediction, and determine whether the best intra-frame encoding method for luminance module encoding is Intra_4×4 mode or Intra_16×16 mode.

[0031] H.264 / AVC intra-frame coding supports two macroblock (MB) division methods, one is Intra _4×4 mode, this method needs to divide the MB into 16 4×4 sub-blocks, each sub-block is independently predictively coded, called I4MB, and the other is Intra _16×16 method, this method does not divide MB, called I16MB, I4MB corresponds to 9 prediction modes, such as figure 2 As shown, I16MB corresponds to 4 prediction modes, such as image 3 shown ；

[0032] used in step A H.264 / AV The C f...

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 rapid intra-frame mode selection method suitable for a downhole distribution type video encoding. When the first two initial I-frame lightness modules are calculated, an H.264 / AVC full searching algorithm is adopted, thus the threshold value precision of a subsequent encoding is improved, when the next I-frame is encoded, a complex full searching algorithm is avoided, the efficiency on video encoding is greatly increased, then by the adoption of the similar complexity of a current calculation piece and the front frame corresponding piece, the formula of DMADPL=|MADL-MADPL |is calculated, according to the similarity reflected by threshold value method, the encoding method of the current lightness module can be directly judged, if the similarity exceeds the scope of the threshold value, and by the adoption of the calculated similar complexity of the current piece and a surround piece, the encoding method of the current frame lightness module can be rapidly judged. According to the selection method, the problem that complexity existed in a calculated algorithm when a distribution type video is encoded is better solved, compared with the traditional full searching algorithm, in the situation of not decreasing a signal-noise ratio, an encoding speed is greatly increased.

Description

technical field [0001] The present invention relates to the field of video coding technology, in particular to a fast intra-frame mode selection method in distributed video coding, and in combination with specific environmental conditions such as the harsh monitoring environment of coal mines, limited bandwidth, and requirements for the definition of image quality, it specifically relates to a H.264 intra mode selection method. Background technique [0002] H.264 / AVC was formulated by JVT, a joint video working group jointly established by ISO / IEC MPEG and IYU-T VCEG, and was completed in May 2003. Compared with previous video compression standards, this standard has a higher video compression efficiency significantly improved. H264 / AVC adopts the traditional macroblock-based and motion compensation method, and adds new technologies such as flexible macroblock segmentation, more efficient motion estimation and compensation, and multi-mode intra-frame prediction. In the enti...

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): H04N19/103H04N19/61
Inventor 程德强张剑英赵国范一武
Owner XUZHOU JIANGMEI TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com