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Method for determining predictor blocks for a spatially scalable video codec

A technology of codec and prediction block, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problems of shrinking, blurring, low efficiency, etc., and achieve the effect of improving coding efficiency

Active Publication Date: 2015-09-23
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This invention relates to an improved way for compressively encoding images with fewer errors when they contain edge details caused by various transformations such as compression (decompression) changes between frames). By reducing these variations during decompressive decoding, better quality videos may be obtained from those compressed versions. Additionally, this technology allows for more efficient use of storage space compared to older methods like motion compensation techniques which require multiple times storing each frame separately before being used again later on. Overall, it provides technical benefits over current approaches.

Problems solved by technology

Technological Problem addressed in this patented technical problem relating to optimizing space allocation between multiple virtual machines within one framework allows for efficient communication across diverse domains while maintaining consistency between them without sacrificial processing steps. Additionally, there may exist various methods proposed for selecting appropriate interpolation functions depending upon the characteristics of each domain, allowing flexibility in terms of choice of interpolants and enhancing compression ratio capabilities.

Method used

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  • Method for determining predictor blocks for a spatially scalable video codec
  • Method for determining predictor blocks for a spatially scalable video codec
  • Method for determining predictor blocks for a spatially scalable video codec

Examples

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Embodiment Construction

[0079] Figure 1a A schematic diagram showing a method 100 for determining a prediction block of a first resolution layer image from blocks of a second resolution layer image of a spatially scalable video codec according to an implementation form. The first resolution layer image is a higher resolution image, and the second resolution layer image is a lower resolution layer image, that is, the resolution of the first resolution layer image is higher than the resolution of the second resolution layer image. The method 100 includes upscaling 101 each block of the second resolution layer image into a corresponding block of the upscaled second resolution layer image. The method 100 includes filtering 103 each block of the upscaled second resolution layer image by a sharpening filter to obtain a predicted block of the first resolution layer image.

[0080] In an implementation form, the scale factor of the enlargement 101 corresponds to the ratio of the resolution of the first res...

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Abstract

The invention relates to a method (100) for determining predictor blocks of a first resolution layer image from blocks of a second resolution layer image of a spatially scalable video codec, wherein a resolution of the first resolution layer image is higher than a resolution of the second resolution layer image, the method (100) comprising: up-scaling (101) each block of the second resolution layer image to a corresponding block of an up-scaled second resolution layer image; and filtering (103) each block of the up-scaled second resolution layer image by a sharpening filter to obtain a predictor block of the first resolution layer image.

Description

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Claims

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Application Information

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Owner HUAWEI TECH CO LTD
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