Check patentability & draft patents in minutes with Patsnap Eureka AI!

Method and device of interpolation in grading video compression

A video compression and interpolation technology, applied in digital video signal modification, electrical components, brightness and chrominance signal processing circuits, etc., can solve problems affecting compression performance and high computational complexity

Inactive Publication Date: 2006-06-28
HUAWEI TECH CO LTD
View PDF0 Cites 10 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original interpolation process uses an interpolation filter with the same precision for the luminance and chroma components, instead of processing them separately according to the different characteristics of luminance and chrominance, and the computational complexity is high
Moreover, the interpolation filter mostly adopts a left-right symmetrical design, which affects the further improvement of the compression performance.

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 and device of interpolation in grading video compression
  • Method and device of interpolation in grading video compression
  • Method and device of interpolation in grading video compression

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] For the latest scalable coding technology, when the ordinary spatial layering technology is used, when the macroblocks of the enhancement layer are encoded using the intra-frame base layer mode (IBL), it is necessary to interpolate the luma component and the chrominance component of the corresponding block of the base layer first, and the luma component The component adopts 1 / 2 pixel precision, the tap coefficient is [1, -5, 20, 20, -5, 1] / 32 interpolation filter, the chroma component adopts 1 / 2 pixel precision, and the tap coefficient is [16 , 16] / 32 interpolation filter. The ordinary spatial layering technology means that the ratio of the image size of the base layer to the image size of the enhancement layer must be 2 or a multiple of 2.

Embodiment 2

[0032]For the latest scalable coding technology, when the Extended Spatial Layering Technology (ESS) is used, when the macroblock of the enhancement layer adopts the intra-frame base layer mode (IBL) coding, it is necessary to perform the luminance component and the chrominance component of the corresponding block of the base layer first. For interpolation, the luminance component adopts 1 / 16 pixel precision interpolation, the interpolation filter adopts 6 taps, and the tap coefficient is determined according to the phase. As shown in Figure 1, when the phase is 0, the tap coefficient is [0, 0, 32, 0, 0, 0] / 32; when the phase is 1, the tap coefficient is [0, -2, 32, 2 , 0, 0] / 32; when the phase is 2, the tap coefficient is [1, -3, 31, 4, -1, 0] / 32; when the phase is 3, the tap coefficient is [1, -4, 30, 7, -2, 0] / 32; when the phase is 4, the tap coefficient is [1, -4, 28, 9, -2, 0] / 32; when the phase is 5, the tap coefficient is [1 , -5, 27, 11, -3, 1] / 32; when the phase is 6...

Embodiment 3

[0036] For the latest scalable coding technology, when the Extended Spatial Layering Technology (ESS) is used, when the macroblock of the enhancement layer adopts the intra-frame base layer mode (IBL) coding, it is necessary to perform the luminance component and the chrominance component of the corresponding block of the base layer first. For interpolation, the luminance component adopts 1 / 16 pixel precision interpolation, the interpolation filter adopts 6 taps, and the tap coefficient is determined according to the phase. As shown in Figure 1, when the phase is 0, the tap coefficient is [0, 0, 32, 0, 0, 0] / 32; when the phase is 1, the tap coefficient is [0, -2, 32, 2 , 0, 0] / 32; when the phase is 2, the tap coefficient is [1, -3, 31, 4, -1, 0] / 32; when the phase is 3, the tap coefficient is [1, -4, 30, 7, -2, 0] / 32; when the phase is 4, the tap coefficient is [1, -4, 28, 9, -2, 0] / 32; when the phase is 5, the tap coefficient is [1 , -5, 27, 11, -3, 1] / 32; when the phase is ...

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

This invention discloses an interpolation method in the hierarchical video compress and a device, which applies mutual independent accurate interpolation filters to the brightness component and the color component, in which, their tapping coefficients are mutual independent and the filters can be symmetric or not and the interpolating result is used in hierarchical video compression.

Description

technical field [0001] The invention relates to the technical field of electrical digital data processing, in particular to a method and device for interpolation in scalable video compression. Background technique [0002] At present, video signals are being transmitted as digital video signals more and more widely. In order to ensure a low data rate, various forms of video compression are usually used. Accordingly, a number of different video compression standards have been defined. [0003] In known video systems a number of different video coding schemes or variants thereof can be used. Therefore, in order to send a compressed video stream to multiple decoders with different functions, capabilities and requirements, sometimes a scalable coded video stream is used. This scalability allows the decoder to take a portion of the video stream and decode all images accordingly. The quality level of the decoded image depends on how many video streams the decoder uses and how t...

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
Patent Type & Authority Applications(China)
IPC IPC(8): H04N9/78H04N19/117H04N19/132H04N19/134H04N19/157H04N19/172H04N19/182H04N19/189H04N19/33H04N19/59H04N19/80
CPCH04N19/186H04N19/33H04N19/34H04N19/80H04N19/30
Inventor 虞露张赐勋孙琦超熊联欢
Owner HUAWEI TECH CO LTD
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