Image sampling algorithm used for external splicer or hybrid matrix

A hybrid matrix and image sampling technology, which is applied in image communication, electrical components, etc., can solve the problems of image color quality degradation, loss of details, image loss, etc., to reduce storage space and CPU occupancy, less loss of details, and improve The effect of cost performance

Active Publication Date: 2014-04-23
南京洛菲特数码科技有限公司
View PDF3 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, after traditional downsampling and upsampling, since the color difference signal is simply decimated and interpolated, if the picture is too smooth, such decimation and interpolation will have little effect on the color of the image, but if you encounter an image with large contrast, Such extraction and interpolation will inevitably cause the degradat

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
  • Image sampling algorithm used for external splicer or hybrid matrix
  • Image sampling algorithm used for external splicer or hybrid matrix
  • Image sampling algorithm used for external splicer or hybrid matrix

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0028] The technical scheme of the present invention will be further described in detail below in conjunction with the accompanying drawings:

[0029] The traditional down-sampling diagram is as figure 1 , The improved down-sampling flowchart is as figure 2 , image 3 As shown, the first and last pixels of each frame of image are processed first, for the first pixel CB0=Cb0: the blue chrominance component Cb0 sampled 4:4:4 is directly assigned to the sampled 4:2:2 For the blue chroma component CB0, CRx=Crx for the last pixel: the last red chroma component of 4:4:4 sampling is directly assigned to the last red chroma component of 4:2:2 sampling. The other pixels first determine the left and right color difference sampling signals.

[0030] When sampling even pixels, such as sampling the second pixel, first determine the size of Cb1-Cb0 and Cb2-Cb1, that is, the absolute value of the difference between the blue chroma components sampled in 4:4:4 and the blue chroma components before...

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 an image sampling algorithm used for an external splicer or a hybrid matrix. The image sampling algorithm includes two parts, i.e., dowmsampling and upsampling, dowmsampling is to process an original 4:4:4 sampled signal to a 4:2:2 sampled signal, i.e., originally, a luminance component, a red chrominance component and a blue chrominance component are taken from each sampling point, and after processing, four luminance components, two red chrominance components and two blue chrominance components are taken from each four sampling points. Upsampling is a reverse process, i.e., to convert a 4:2:2 sampled signal to a 4:4:4 sampled signal. The image sampling algorithm used for the external splicer or the hybrid matrix is a simple algorithm, is relatively good in processing effect of an image, small in loss of details, and high in color quality; after downsampling, a requirement for channel bandwidth is lowered by one third, and the storage space and the occupancy rate of a CPU are also reduced by one third at the same time; additional modification of hardware is not needed, cost is saved, and the performance cost ratio is high.

Description

technical field [0001] The invention discloses an image sampling algorithm used for an external splicer or a mixing matrix, and relates to the field of electronic equipment manufacturing. Background technique [0002] The role of the external splicer / mixing matrix is ​​to realize the transmission and storage of images and videos. In the transmission and storage, due to the influence of the transmission channel bandwidth, memory size and CPU processing power, it is often necessary to up and down sample the image before processing. [0003] Traditional downsampling is to convert the original 4:4:4 sampling method to 4:2:2 sampling method. After downsampling, each pixel is converted from 24bit to 16bit, which can save transmission channel bandwidth, memory size and CPU processing power, and save one-third of resources. Upsampling is to convert each pixel from 16bit to 24bit for subsequent processing, which is the inverse process of downsampling. [0004] At each sampling poin...

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): H04N1/56
Inventor 顾为征徐奇敏
Owner 南京洛菲特数码科技有限公司
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