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

Method for colour space conversion of image sequence

A technology of color space conversion and image sequence, which is applied in the field of image processing, can solve the problems of high time consumption and slow processing efficiency of digital film encoding, and achieve the effects of reducing storage space, shortening table lookup time, and reducing size

Active Publication Date: 2010-01-06
数码辰星科技发展(北京)有限公司
View PDF0 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When performing color space conversion processing on image sequences, that is, in the process of converting RGB to XYZ specifications, the calculation process consumes a lot of time during conversion and correction, which leads to extremely slow efficiency in digital film encoding processing.

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 colour space conversion of image sequence
  • Method for colour space conversion of image sequence
  • Method for colour space conversion of image sequence

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0039] The invention establishes a color conversion correction table, and when the conversion correction operation is required in the space conversion process of the image sequence color, the corrected value is obtained by searching the established color conversion correction table. The present invention is described in detail below.

[0040] In advance, carry out conversion and correction calculation processing for each color value of R, G and B, and store the corresponding R, G and B colors before correction, so as to perform color space conversion on the image sequence in the digital cinema distribution master R, G, B conversion correction during the processing. Wherein, it may be stored in the form of a color conversion correction table, which is recorded as an RGB conversion correction table. The conversion formula used in the above conversion correction calculation is as follows:

[0041] R ′ = INT [ ...

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 provides a method for colour space conversion of an image sequence. Image files in the image sequence is extracted, and pixels of each image file is extracted to perform the following steps: determining values R, G and B of pixels extracted currently; searching values R', G' and B' after conversation correction corresponding to the values R, G and B according to a preset RGB conversion correcting table; converting colour space of the values R', G' and B' into values X, Y and Z; searching values X', Y' and Z' after conversion correction corresponding to values X, Y and Z according to a preset XYZ conversion correcting table; and substituting the values X', Y' and Z' into values X, Y and Z. By adopting the invention, the time for encoding digital films can be shortened.

Description

technical field [0001] The invention relates to an image processing method, in particular to a method for image sequence color space conversion. Background technique [0002] In 2005, the Digital Cinema Initiatives (DCI, Digital Cinema Initiatives) composed of Disney, Fox, Paramount, Warner Brothers and other major film production companies announced a document called "Digital Cinema System Technical Specifications (V1.0 )" technical standard (DCI specification for short), standardizes the relevant technical requirements of digital movies, and makes the production and projection of digital movies a unified international standard. The video image format of the DCI specification specifies 4K resolution, adopts 12-bit grayscale in the XYZ color space, and uses the Motion JPEG200 specification for video compression, and its data transmission rate reaches 250Mbps. [0003] Compared with foreign countries, the development of my country's digital film production industry is relati...

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): H04N9/64
Inventor 肖立群王忠平耿克明张晓玲李琳孙晓斌胡轶
Owner 数码辰星科技发展(北京)有限公司
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