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Image processing device, image processing method, and program

An image processing device and image technology, which is applied in image communication, television, electrical components, etc., can solve the problems of massive calculations in encoding and decoding operations, and achieve the effect of quality improvement

Inactive Publication Date: 2011-12-28
SONY CORP
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Problems solved by technology

In H.26L, encoding and decoding operations are computationally intensive compared to existing encoding standards such as MPEG 2 and MPEG 4

Method used

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  • Image processing device, image processing method, and program
  • Image processing device, image processing method, and program
  • Image processing device, image processing method, and program

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[0072]

[0073] first reference Figure 4 to Figure 6 An image encoding device and an image decoding device which are the base devices of the present invention are described.

[0074] Figure 4 The configuration of an image encoding device as a base device of the present invention is illustrated. The image encoding device 51 includes an A / D conversion unit 61, a reordering screen buffer 62, a calculation unit 63, an orthogonal transformation unit 64, a quantizer unit 65, a lossless encoding unit 66, an accumulation buffer 67, an inverse quantizer unit 68, Inverse orthogonal transform unit 69 , calculation unit 70 , deblocking filter 71 , frame memory 72 , switch 73 , intra prediction unit 74 , motion prediction / compensation unit 75 , predicted image selection unit 76 and rate control unit 77 . The image coding device 51 compression-codes images using, for example, the H.264 / AVC standard.

[0075] The A / D conversion unit 61 A / D converts the input image and outputs the conv...

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Abstract

The present invention relates to an image processing apparatus, an image processing method, and a program capable of increasing the quality of a predicted image generated through inter prediction even when a motion compensation process with integer-pel accuracy is performed. A computing unit 115 decodes a transform coefficient subjected to inverse orthogonal transform and supplied from an inverse orthogonal transform unit 114 by adding the transform coefficient to an inter predicted image supplied from a switch 214. A motion prediction / compensation unit 212 performs motion compensation on the decoded image. An FIR filter 213 performs a filter process on the motion-compensated image using a filter coefficient corresponding to a compressed image and transmitted from an image encoding apparatus. The filter coefficient is obtained using the least-square method when the compressed image is generated. The FIR filter 213 supplies the filtered image to the switch 214 as the inter predicted image. The present invention is applicable to an image decoding apparatus that performs decoding using, for example, the H.264 / AVC standard.

Description

technical field [0001] The present invention relates to an image processing device, an image processing method, and a program, and more particularly, to an image processing device capable of improving the quality of a predicted image generated by inter prediction even when motion compensation processing with integer pixel precision is performed, an image processing device, and an image processing device. methods and procedures. Background technique [0002] In recent years, devices that manipulate image information in digital format and at that time, compression-encoded images have come into widespread use in order to efficiently transmit and accumulate information. This apparatus uses redundancy specific to image information and employs a method of compressing images based on orthogonal transform such as discrete cosine transform and motion compensation (for example, MPEG (Moving Picture Experts Group Phase) standard). [0003] Specifically, MPEG 2 (ISO / IEC 13818-2) is def...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/32
CPCH04N19/00781H04N19/00733H04N19/51H04N19/61
Inventor 近藤健治田中润一
Owner SONY CORP
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