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Image processing device and method

An image processing device and image technology, applied in image communication, television, electrical components, etc., to achieve the effect of improving prediction efficiency

Inactive Publication Date: 2012-10-03
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, setting the macroblock size to 16×16 pixels is not optimal for larger picture frames such as UHD (Ultra High Definition; 4000×2000 pixels), which may be the target of next-generation coding standards

Method used

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Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0078] Embodiments of the present invention are described below with reference to the drawings.

[0079] Configuration example of an image encoding device

[0080] figure 1 is a block diagram depicting the configuration of one embodiment of an image encoding device to which the present invention is applied.

[0081] The image encoding device 51 is configured to compress and encode images based on, for example, H.264 and MPEG-4 Part 10 (Advanced Video Coding) (hereinafter referred to as H.264 / AVC) standards.

[0082] exist figure 1 In the example of , the image encoding device 51 includes: A / D converter 61, image sorting buffer 62, arithmetic operator 63, orthogonal transformer 64, quantizer 65, lossless encoder 66, accumulation buffer 67, inverse quantization 68, Inverse Orthogonal Transformer 69, Arithmetic Operator 70, Deblocking Filter 71, Frame Memory 72, Switch 73, Intra Predictor 74, Motion Predictor / Compensator 75, Weighted Predictor 76, Predicted Image Selection De...

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Abstract

Disclosed are an image processing device and method which enable an improvement in prediction efficiency in weighting prediction for a color difference signal. When receiving an input of a reference image pixel value indicated by motion vector information from a motion compensation unit (82), a luminance weighting motion compensation unit (96) performs weighting prediction processing on a luminance signal and a color difference signal (in the case of RGB) using a weight coefficient and an offset value from a luminance weight / offset calculation unit (94). When receiving an input of the reference image pixel value indicated by the motion vector information from the motion compensation unit (82), a color difference weighting motion compensation unit (97) performs weighting prediction processing on a color difference signal (in the case of YCbCr) using a weight coefficient and an offset value from a color difference weight / offset calculation unit (95). The present invention is applicable, for example, to an image coding device which performs coding on the basis of the H.264 / AVC system.

Description

technical field [0001] The present invention relates to an image processing device and method, and more particularly to an image processing device and method with improved prediction efficiency for weighted prediction of chrominance signals. Background technique [0002] In recent years, it is configured to digitally process image information while transmitting and accumulating information with higher efficiency by adopting encoding for compression by orthogonal transform such as discrete cosine transform and motion compensation with redundancy unique to image information Standards to compress and encode images are gaining popularity. Example encoding standards include MPEG (Moving Picture Experts Group). [0003] Note here that MPEG-2 (ISO / IEC13818-2) is prescribed as a general-purpose image encoding standard covering both interlaced images and progressive images, as well as standard-resolution images and high-definition images. For example, MPEG-2 is currently widely use...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N19/105H04N19/159H04N19/176H04N19/186H04N19/189H04N19/19H04N19/423H04N19/50H04N19/503H04N19/51H04N19/523H04N19/577H04N19/593H04N19/60H04N19/61H04N19/80H04N19/82H04N19/85H04N19/91
CPCH04N19/00315H04N19/00278H04N7/26861H04N19/00684H04N19/00024H04N19/00545H04N19/105H04N19/176H04N19/186H04N19/46H04N19/513H04N11/04H04N19/50
Inventor 佐藤数史
Owner SONY CORP
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