Method for realizing video compression and decompression

A video compression and decompression technology, applied in digital video signal modification, television, image data processing, etc., can solve the problems of not using parallel processors, not making full use of computing resources, reducing the amount of integer transformation operations, and reducing CPU usage. occupancy, ensure normal operation, and reduce the effect of processing time

Inactive Publication Date: 2006-10-04
TENCENT TECH (SHENZHEN) CO LTD
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] But the above-mentioned integer transformation method for 4 * 4 pixel blocks does not make full use of existing computing resources, for example, when carrying out integer transformation in PC and

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
  • Method for realizing video compression and decompression
  • Method for realizing video compression and decompression
  • Method for realizing video compression and decompression

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Because PC and DSP etc. are provided with the processor that is used to carry out floating-point calculation, and this processor can be used for parallel operation, such processor is called parallel processor, so the scheme of the present invention mainly utilizes this parallel processor to carry out Integer transformation and inverse transformation, so as to realize video compression and decompression.

[0043] The scheme of the present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] First, the 2D integer transform for 4x4 pixel blocks is described in detail.

[0045] Suppose a 4×4 pixel block is a matrix X, and the matrix X is x 00 x 01 x 02 x...

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 method for achieving the visual compression, which first line fixes the compressing image element block corresponding matrix in the register of the concurrent processor which dose level transformation to the matrix to obtain the new matrix; then it dose vertical transformation to obtain the matrix information after image element block compression. It also discloses two methods for achieving video unpack.

Description

technical field [0001] The present invention relates to the technical field of video compression, more specifically to a method for realizing video compression and decompression in video compression. Background technique [0002] Currently, the latest video compression standards H.26L and H.264 are based on integer transformation algorithms. Since the integer transformation algorithm is based on floating-point operations, it is not suitable for real-time operation requirements, so it cannot be directly applied in the field of video coding. In order to apply the integer transformation algorithm, a key step is to convert real numbers into integers for operation, and the conversion from real numbers to integers has been realized so far. [0003] Most of the current image / video coding standards use 8×8 integer transformation. In order to obtain higher coding efficiency, H.264 chooses a smaller data unit, that is, a 4×4 pixel block. For the integer transformation algorithm of 4...

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
IPC IPC(8): H04N7/26G06T9/00H04N19/436
Inventor 梁柱
Owner TENCENT TECH (SHENZHEN) CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap