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Cross-layer predictive coding method

A predictive coding and cross-layer technology, applied in the field of video coding, can solve problems such as poor picture quality and inaccurate enhancement layers, and achieve the effect of reducing the distortion rate

Active Publication Date: 2012-07-04
WUXI ZGMICRO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But the disadvantage of this is that directly predicting the high-resolution top and bottom fields from the top and bottom fields of the base layer will make the predicted enhancement layer inaccurate, and the image quality is very poor

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Embodiment Construction

[0020] The detailed description of the present invention directly or indirectly simulates the operation of the technical solution of the present invention mainly through programs, steps, logic blocks, processes or other symbolic descriptions. In the ensuing description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. Rather, the invention may be practiced without these specific details. These descriptions and representations herein are used by those skilled in the art to effectively convey the substance of their work to others skilled in the art. In other words, for the purpose of avoiding obscuring the present invention, well-known methods and procedures have not been described in detail since they have been readily understood.

[0021] Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure or characteristic that can be included in at least one implementation of the pres...

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Abstract

The invention provides a cross-layer predictive coding method. The method comprises the following steps of: acquiring a reconstruction top field and a reconstruction bottom field of a baseband layer; acquiring a reconstruction video frame by utilizing the reconstruction top field and the reconstruction bottom field; performing up-sampling interpolation on the reconstruction video frame by utilizing an up-sampling interpolation filter to acquire an enhancement layer spatial prediction frame used for cross-layer prediction; acquiring a spatial prediction top field and a spatial prediction bottom field of the enhancement layer spatial prediction frame; and performing the predictive coding by utilizing the spatial predication top field and the spatial predication bottom field so as to acquire a perfect up-sampling filter interpolation result, and further reduce the distortion rate of a high-resolution video stream.

Description

【Technical field】 [0001] The invention relates to the field of video coding, in particular to a cross-layer predictive coding method. 【Background technique】 [0002] In the field of broadcasting and monitoring, different users have different requirements for display resolution, video quality and transmission bandwidth. Therefore, the traditional single-layer video encoder needs to be expanded into a multi-layer video encoder, so that different video formats and image quality can be provided in the same compressed video stream. In this way, the needs of different users can be met. [0003] Based on this, JVT (Joint Video team) proposed an extended version of H.264 / AVC - SVC (Scalable Video Coding, scalable video coding). SVC technology realizes layered coding in three aspects of time domain, space domain and image quality. The most important of these is spatial layered coding, which mainly uses the spatial correlation between different resolution video layers for coding. ...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N7/26H04N7/32H04N7/46H04N19/33H04N19/59
Inventor 陈玉
Owner WUXI ZGMICRO ELECTRONICS CO LTD