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Image processing device and method

An image processing device, a technology of pixel values, applied in image communication, television, electrical components, etc., can solve problems such as reducing efficiency, and achieve the effect of increasing the amount of calculation, improving prediction accuracy, and suppressing the deterioration of compression efficiency

Inactive Publication Date: 2011-08-17
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In AVC encoding, motion prediction / compensation processing is performed, thereby generating a large amount of motion vector information, resulting in reduced efficiency if encoded in this case

Method used

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Embodiment Construction

[0064] Referring to the drawings, embodiments of the present invention will be described.

[0065] figure 1 The configuration of an embodiment of the image encoding device according to the present invention is illustrated. The image encoding device 51 includes an A / D converter, a screen rearrangement buffer 62, a calculation unit 63, an orthogonal transformation unit 64, a quantization unit 65, a lossless encoding unit 66, an accumulation buffer 67, an inverse quantization unit 68, an inverse Alternate transformation unit 69, calculation unit 70, deblocking filter 71, frame memory 72, switch 73, intra prediction unit 74, motion prediction / compensation unit 77, inter template motion prediction / compensation unit 78, prediction image selection unit 80 , a rate control unit 81 , and a prediction accuracy improvement unit 90 .

[0066] Note that, hereinafter, the inter template motion prediction / compensation unit 78 will be referred to as the inter TP motion prediction / compensati...

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Abstract

Provided are an image processing device and method which can improve the prediction accuracy and suppress lowering of the compression efficiency without increasing the calculation amount. A distance between a basic frame Fn and a reference frame Fn-1 on the time axis is made to be tn-1. A distance between the reference frame Fn-1 and a reference frame Fn-2 on the time axis is made to be tn-2. A motion vector Ptmmv for shifting a block blkn-1 in parallel to the reference frame Fn-2 is obtained according to tn-1 and tn-2. A predicted error between the block blkn-1 and a block blkn-2 is calculated according to SAD so as to obtain SAD2. The cost function evtm for evaluating the accuracy of the motion vector tmmv is calculated according to SAD1 and SAD2.

Description

technical field [0001] The present invention relates to an image processing apparatus and method, and in particular, to an image processing apparatus and method by which it is possible to suppress deterioration of compression efficiency while improving prediction accuracy without increasing the calculation amount. Background technique [0002] In recent years, devices that perform compression encoding of images using a format such as MPEG, that perform compression by orthogonal transform such as discrete cosine transform and motion compensation using MPEG using redundancy inherent in image information, have come into widespread use, The purpose is efficient transmission and accumulation when handling image information as digital. [0003] Specifically, MPEG2 (ISO / IEC 13818-2) is defined as a general-purpose image coding format, which is a standard covering both interlaced images and progressive images as well as standard-resolution images and high-resolution images, and is c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32
CPCH04N19/00781H04N19/00278H04N7/26026H04N7/50H04N19/00587H04N19/00315H04N7/26765H04N7/26244H04N19/00042H04N7/26021H04N19/00018H04N7/26292H04N19/176H04N19/51H04N19/61H04N19/11H04N19/103H04N19/186
Inventor 佐藤数史矢崎阳一
Owner SONY CORP