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Device, method, and program for image processing

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

Inactive Publication Date: 2012-09-12
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, setting the macroblock size to 16×16 pixels is not optimal for large picture frames such as UHD (Ultra High Definition: 4000×2000 pixels), which is the target of the next-generation encoding method

Method used

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  • Device, method, and program for image processing
  • Device, method, and program for image processing
  • Device, method, and program for image processing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0124] Embodiments of the present invention will be described below with reference to the drawings.

[0125] [Example of Structure of Image Coding Device]

[0126] Figure 5 The structure of the first embodiment of the image encoding device as the image processing device to which the present invention is applied is shown.

[0127] The image encoding device 51 compression-encodes input images according to, for example, H.264 and MPEG-4 Part 10 (Advanced Video Coding) (hereinafter referred to as H.264 / AVC) methods.

[0128] exist Figure 5 In the example of , the image coding device 51 is composed of an A / D converter 61, a screen rearrangement buffer 62, an arithmetic operation part 63, an orthogonal transformation part 64, a quantization part 65, a lossless coding part 66, an accumulation buffer 67, an inverse quantization Section 68, Inverse Orthogonal Transformation Section 69, Arithmetic Operation Section 70, Deblocking Filter 71, Frame Memory 72, Switch 73, Intra Predictio...

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Abstract

Disclosed are a device, a method, and a program for image processing capable of reducing overhead and improving encoding efficiency. An interpolating filter (84) with strong symmetry has a variable filter factor, and applies a predetermined symmetry on more pixels than an interpolating filter (82) with weak symmetry. The interpolating filter (84) with strong symmetry filters a reference image from a frame memory (72) using 18 filter factors calculated by a filter-factor calculating unit (85) with strong symmetry, and outputs the reference image after variable filtering to a selector (86). When a slice to be processed is a B slice, the selector (86) selects the reference image after variable filtering output from the interpolating filter (84) with strong symmetry, and outputs the image to a motion predicting unit (87) and a motion compensating unit (88) under the control of a control unit (90). The present invention is applicable to, for example, an image encoding device that encodes on the basis of the H.264 / AVC standard.

Description

technical field [0001] The present invention relates to an image processing device, method and program, in particular to an image processing device, method and program capable of reducing overhead and improving coding efficiency in the case of B slices. Background technique [0002] H.264 and MPEG-4 Part 10 (Advanced Video Coding, hereinafter referred to as H.264 / AVC) can be used as standard specifications for compressing image information. [0003] In H.264 / AVC, inter prediction focusing on the correlation between frames or fields is performed. In the motion compensation processing performed in the inter prediction, a part of the stored and referable image area is used to generate a predicted image by inter prediction (hereinafter referred to as an inter predicted image). [0004] For example, in figure 1 As shown in , when 5 frames of images that have been stored and can be referred to are determined as reference frames, a part of an image (hereinafter referred to as a r...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32H04N19/50H04N19/11H04N19/117H04N19/146H04N19/147H04N19/154H04N19/159H04N19/174H04N19/19H04N19/196H04N19/423H04N19/46H04N19/463H04N19/503H04N19/517H04N19/523H04N19/577H04N19/59H04N19/60H04N19/61H04N19/70H04N19/80H04N19/91
CPCH04N19/61H04N19/117H04N19/80
Inventor 近藤健治
Owner SONY CORP
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