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

Pixel processing with color component

A color component, pixel technique

Active Publication Date: 2019-03-15
TELEFON AB LM ERICSSON (PUBL)
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, there are issues regarding linearization strategies such as disclosed in [2]
Linearization can sometimes fail, causing luminance values ​​that produce severe artifacts
In fact, in some cases, the results obtained by using the linearization strategy are better than those obtained by using figure 1 Traditional processing in (which is cheaper) would have gotten 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
  • Pixel processing with color component
  • Pixel processing with color component
  • Pixel processing with color component

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0061] This embodiment relates generally to the processing of pixels in pictures, and in particular to such processing to improve the luminance values ​​of pixels.

[0062] The combination of highly non-linear transfer functions, chroma subsampling, and non-constant luminance ordering produces severe artifacts for video data, specifically for HDR video and saturated colors. The problem comes from the fact that the chroma components are interpolated, but the luma components are not. Thus, there can be a sharp shift of the luma component in the pixel, but the chrominance components cannot follow because they are interpolated. For some colors (especially saturated colors), the result is pixels of completely wrong intensity, which are clearly visible as artifacts.

[0063] The solution to this problem involves finding the luminance value (Y') that will give the correct illuminance (Yo) of the pixel. A computationally efficient solution is to linearize the transfer function to fi...

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

A processing of pixels comprises checking whether a color component of a pixel in a color space resulting in a smallest error between at least one color component in another color space determined based on the color component and at least one original color component of the pixel in the another color space causes any color channel of the pixel to fall outside of an allowed range. A value of the color component is obtained using a first function / LUT if the color component resulting in the smallest error does not cause any color channel of the pixel to fall outside of said allowed range. However, a value of the color component is obtained using a second, different function / LUT if the color component resulting in the smallest error causes any color channel of the pixel to fall outside of theallowed range.

Description

technical field [0001] This embodiment relates generally to the processing of pixels in pictures, and in particular to such processing of improving the luminance values ​​of pixels. Background technique [0002] In the field of video coding, non-linear transfer functions convert linear samples to non-linear samples with the aim of mimicking human vision. In the encoding of high dynamic range (HDR) video, it can be advantageous to use highly non-linear transfer functions. A highly non-linear transfer function makes it possible to assign many codewords to dark regions and fewer codewords to bright regions, where the relative difference in brightness is small anyway. [0003] An example of conventional processing of HDR video is at figure 1 shown in . In this traditional process, for example the inverse of the transfer function (TF -1 ) (which is usually the inverse of the electro-optical transfer function (EOTF)) is applied to the red, green and blue color components (RoGo...

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): H04N19/86G09G5/02H04N1/64H04N19/186
CPCH04N1/64H04N19/186G09G2340/06H04N19/85G09G5/06G09G5/02H04N1/642
Inventor J.斯特朗姆J.塞缪尔森R.斯约伯格K.安德森K.多维斯坦姆
Owner TELEFON AB LM ERICSSON (PUBL)
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