Frame field adaptive coding method based on image slice structure

An adaptive coding and frame coding technology, which is applied in image communication, television, electrical components, etc., can solve problems such as not being able to adapt to changes in image characteristics, simplify writing and memory access times, improve coding efficiency, The effect of good flexibility

Inactive Publication Date: 2005-03-16
上海松下等离子显示器有限公司
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Problems solved by technology

[0009] Due to the disadvantages of the frame field adaptive coding of the whole image and the frame field adaptive coding method based on the macroblock pair in the prior art, neither can adapt to the change of image characteristics well

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  • Frame field adaptive coding method based on image slice structure
  • Frame field adaptive coding method based on image slice structure
  • Frame field adaptive coding method based on image slice structure

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Embodiment Construction

[0036] The technical solutions of the present invention will be further described below in conjunction with the drawings and embodiments.

[0037] The main design idea of ​​the present invention is to divide the image into image slices firstly, and the size of the image slices can be changed, the maximum can be set as the whole image, and the minimum can be set as the size of a macroblock. In each image slice, it is divided into several macroblocks. When encoding the image, the encoding method (frame encoding or field encoding) is considered in units of image slices, that is, the macroblocks in the same image slice Both use the same encoding method. By setting image slices, the image can be reasonably divided. For example, in the image, a part of the region is more suitable for frame coding, while another part of the region is more suitable for field coding. According to the method of the present invention, They can be divided into different image slices, which are encoded by...

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Abstract

The invention discloses a frame field self adaptive coding method based on image piece cutting structure. It includes following steps: the image is cut into pieces; carries on frame coding and field coding to each piece; selects one with small cost as the coding mode; adds a image piece head signing the image piece for each image piece; adds a macro index for each image piece; adds a image head for each image, it forms the coding data of image together with the coding data of several image piece and macro index. The invention overcomes the deficiency that the flexibility of the whole image frame field coding is not enough.

Description

technical field [0001] The present invention relates to video signal encoding technology, more specifically, relates to a frame field adaptive encoding method based on image slice structure. Background technique [0002] Traditional video coding standards such as H.261, H.263, H.263+, and H.264 standards formulated by ITU and MPEG-1, MPEG-2, and MPEG-4 formulated by ISO's MPEG organization are all based on hybrid On top of the Hybrid Coding framework. The so-called hybrid coding framework is a hybrid temporal-spatial video image coding method, which includes: first intra-frame and inter-frame prediction to eliminate the correlation in the time domain; and then the residual of the original image and the prediction result Perform two-dimensional transformation (discrete cosine transformation or other linear transformation) to eliminate spatial correlation; then perform entropy coding to remove statistical redundancy. [0003] In order to improve the compression efficiency of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/103
Inventor 赵海武
Owner 上海松下等离子显示器有限公司
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