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

Device and method for motion estimation in enhancement layer in scalable video coding

A technology of motion estimation and video coding, applied in television, electrical components, image communication, etc., can solve the problem of decoding complexity reduction

Active Publication Date: 2013-09-04
芯原微电子(北京)有限公司 +2
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For this reason, the decoding complexity is greatly reduced

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
  • Device and method for motion estimation in enhancement layer in scalable video coding
  • Device and method for motion estimation in enhancement layer in scalable video coding
  • Device and method for motion estimation in enhancement layer in scalable video coding

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0052] The encoding implementation method of the base layer image macroblock (the coordinates of its upper left corner is (x, y)) is as follows:

[0053] 1. Read the brightness value of the current macroblock to be encoded into the array Image[16][16]. Read in the reference data Region1[H][W] within its search range from its reference image. Among them, the coordinates of the upper left corner of Region1 are (x-16, y-16), and the coordinates of the lower right corner are (x+32, y+32). If the coordinate falls outside the image, it is filled with its nearest valid pixel as defined by the specification. When the search range in the x and y directions is ±14, H=48 and W=48 can satisfy all the pixels required for motion estimation. The reference data is two pixels more than the range of the motion search. This is because the motion estimation uses a 6-tap filter to estimate the image values ​​​​at 1 / 2 pixels and 1 / 4 pixels, so 2 more lines and 2 columns. In this way, for a 16x1...

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

In the design of a video coder, motion estimation is a part with the greatest computation load and the highest computation complexity. In the design of the scalable video coder, the inter-layer correlation can be utilized to decrease the complexity of motion estimation in the enhancement layer. The invention puts forward a method, which utilizes the motion information of low-resolution image layers to roughly estimate the motion vector of the enhancement layer, so that the range of the motion estimation in the enhancement layer is narrowed, and thereby computation complexity is decreased.

Description

technical field [0001] The invention belongs to the field of image processing, and in particular relates to a device and a method in the field of scalable video coding, which are used for reducing the computational complexity of the motion estimation of the enhancement layer in the scalable video coding. Background technique [0002] A large number of video coding standards exist, including ITU-T H.261, ISO / IEC MPEG-1Visual, ITU-T H.262 or ISO / IEC MPEG-2Visual, ITU-TH.263, ISO / IEC MPEG-4Visual and ITU- T H.264 or ISO / IEC MPEG-4 AVC. H.264 / AVC is the output of the work of the ITU-T Video Coding Experts Group (VCEG) and the Joint Video Team (JVT) of ISO / IEC MPEG. There also exist proprietary solutions for video coding (e.g. VC-1, also known as SMPTE standard 421M, which is based on Microsoft's Windows Media Video (Windows Media Video) version 9), and national standardization initiatives (eg, China The AVS codec of the Audio and Video Coding Standards Working Group. Some of ...

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): H04N7/26H04N7/50
Inventor 付桂鹏张琪
Owner 芯原微电子(北京)有限公司