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Filtered and warpped motion compensation

A motion compensation, motion compensator technology, used in character and pattern recognition, instruments, computer parts, etc.

Inactive Publication Date: 2008-09-10
TEXAS INSTR INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] [0008] Thus, traditional block-based motion compensation techniques such as those used in H.264 / AVC become ineffective when affine motion, illumination variations, and blurring start to occur in the video sequence

Method used

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  • Filtered and warpped motion compensation
  • Filtered and warpped motion compensation
  • Filtered and warpped motion compensation

Examples

Experimental program
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Embodiment Construction

[0014] 1. Overview

[0015] [0014] A preferred embodiment of the video compression method includes filtering and / or distorting one or more reference frames (or just portions thereof) to provide additional reference frames for motion compensation. This allows for accurate extrapolation of scenes with affine motion, lighting and fading changes, and / or blur. Figure 1a is a flowchart of a preferred embodiment for performing the detection, Figure 1b A set of reference frames generated from the reconstructed frames plus filtered and / or warped versions of these frames are shown, and Figures 1c-1d illustrate an encoder and decoder implementing the method of the preferred embodiment. The generated set of reference frames (or portions of frames) may be responsive to detection of blur, faded and / or affine motion in the current frame, or may be a pre-defined set of filtered and distorted application results.

[0016] [0015] Preferred embodiment systems (e.g., cellular portable radiot...

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PUM

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Abstract

Video compression utilizes filterings and / or warpings of the reference frames for motion estimation and motion compensation. The presence of affine, fade, or blur is determined. If present, filters and / or warpings are applied to reference frames and motion is estimated using reference frames plus any filtering / warping reference frames.

Description

technical field [0001] [0001] The present invention relates to digital video signal processing, and more particularly to apparatus and methods for video compression. Background technique [0002] [0002] Various applications of digital video communication and storage currently exist, and corresponding international standards have been developed and continue to be developed. Low bit rate communications, such as video telephony and video conferencing, have resulted in the H.261 standard with a multiplex 64kbps bit rate. The need for even lower bit rates resulted in the H.263 standard. [0003] [0003] H.264 / AVC is a recent video signal codec standard, which utilizes several advanced video coding tools to provide a higher level of video signal coding than existing video signal coding standards such as MPEG-2, MPEG-4, and H.263. Good compression performance. The core of the H.264 / AVC standard is the hybrid video signal coding technology of Block Motion Compensation (BMC) and tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06K9/40
Inventor M・巴达加维M・周A・U・巴图尔
Owner TEXAS INSTR INC
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