Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for encoding a digital image and associated decoding method, devices, user terminal and computer programs

A digital image and coding technology, which is applied in the field of signal compression of digital images or digital image sequences, can solve problems such as prediction variation, and achieve the effects of improving compression efficiency and computing resources

Active Publication Date: 2018-11-09
B COM
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The disadvantage of this technique is that by predicting all selected symbols globally, each symbol is affected by the values ​​of other symbols and the prediction gets worse

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 encoding a digital image and associated decoding method, devices, user terminal and computer programs
  • Method for encoding a digital image and associated decoding method, devices, user terminal and computer programs
  • Method for encoding a digital image and associated decoding method, devices, user terminal and computer programs

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0140] According to the first embodiment of the present invention, this step T5 includes the following sub-steps:

[0141] at E5 1 , we consider the current sequence Seq c , which is initialized to the initial sequence Seqi.

[0142] The following steps form an iterative loop, which depends on the sequence Seq c The number M of descriptive elements to be predicted selected in is repeated several times.

[0143] The description element may take at least two values. For example, the sign could be + or -.

[0144] In step E5 2 During, the sequence Seq of elements to be predicted is evaluated using the evaluation function FE or a predetermined cost criterion c Different possibilities or assumptions for combinations of values ​​for . We assume that we have K hypotheses or possible combinations, where K is a non-zero integer. In the case where the descriptor element to be predicted is a sequence of M symbols, the symbols can take the value + or the value -, the number of pos...

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 relates to a method for encoding a digital image, said image (Im) being divided into a plurality of blocks of pixels (C) processed in a defined order, said method comprising the following steps, implemented for a current block, of processing (E1) the current block intended to provide a set of description elements of the processed block; selecting (E2) a subset of at least two description elements to predict in the provided set; ordering (E4) the description elements of the subset into an ordered sequence; encoding elements of the sequence. According to the invention, the step ofencoding the elements of the sequence includes browsing the elements of the sequence and includes, for a current element, the following sub-steps: selecting a combination of the values of the description elements of the sequence from a plurality of combinations as a function of a predetermined cost criterion and, from the second element, values of description elements previously processed in the sequence; predicting the current element of the sequence from the value thereof in the selected combination; encoding an indicator representing a difference between the actual value of the current element and its predicted value.

Description

technical field [0001] The field of the invention is that of signal compression, in particular of digital images or sequences of digital images, in which a part of the signal to be coded is predicted from a part of the coded signal. [0002] Encoding / decoding of digital images applies in particular to images from at least one video sequence, which includes the following: [0003] - images from the same camera and temporally succeeding each other (type - 2D encoding / decoding), [0004] - images from different cameras oriented according to different views (3D-type encoding / decoding), [0005] - components of the corresponding texture and depth (3D-type encoding / decoding), [0006] -etc. [0007] The invention applies in a similar manner to 2D or 3D type encoding / decoding of images. [0008] The invention can be applied particularly, but not exclusively, to video encoding and corresponding decoding implemented in current AVC and HEVC video encoders and their extensions (MVC, ...

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): H04N19/50H04N19/13H04N19/91H04N19/136H04N19/18H04N19/192
CPCH04N19/50H04N19/46H04N19/13H04N19/91H04N19/136H04N19/18H04N19/192H04N19/119H04N19/176H04N19/39H04N19/619H04N19/647
Inventor 费利克斯·亨利
Owner B COM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com