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Information processing apparatus, information processing method and program

An information processing device and information generation technology, which can be used in image communication, digital video signal modification, television, etc., and can solve problems such as the increase in the calculation amount of motion vector detection

Inactive Publication Date: 2012-10-24
SONY CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In this block matching method, the similarity between the search target block and each block in the search area is calculated, so the calculation amount of motion vector detection becomes large

Method used

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  • Information processing apparatus, information processing method and program
  • Information processing apparatus, information processing method and program
  • Information processing apparatus, information processing method and program

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0041] 1-1. Configuration of information processing equipment

[0042] 1-2. Processing operation of information processing equipment

[0043] 1-3. Configuration and operation of low-bit image generation unit

[0044] 1-4. Configuration and operation of block matching unit

[0045] 1-5. Configuration and operation of the first reliability calculation unit

[0046] 1-6. Configuration and operation of the second reliability calculation unit

[0047] 1-7. Configuration and operation of reliability merging unit

[0048] 1-8. Configuration and operation of the global motion vector calculation unit

[0049] 1-9. Configuration and operation of motion compensation unit

[0050] 2. The second embodiment

no. 3 example

[0052] 3. When processing is performed by a program

[0053] 1. The first embodiment>

[0054] The information processing apparatus of the present disclosure performs bit reduction processing of reducing the number of bits allocated to pixels on a standard image and a reference image, and generates bit-reduced low-bit standard images and low-bit reference images. Next, the information processing apparatus detects a local motion vector by performing block matching using the low-level standard image and the low-level reference image, and calculates a degree of reliability based on the low-level standard image and the block matching result. Furthermore, the information processing device detects a global motion vector from the local motion vector and reliability, and performs motion compensation of the reference image based on the detected global motion vector. A local motion vector ("LMV") represents a block-unit motion vector, and a global motion vector ("GMV") represents one...

no. 2 example

[0212] Incidentally, although a first reliability calculation unit for calculating reliability from evaluation values ​​and a second reliability calculation unit for calculating reliability from low-bit images are provided in the first embodiment, it is possible to employ Configuration of one of the degree calculation units. Next, in the second embodiment, Figure 21 A configuration is shown in which only a first reliability calculation unit for calculating reliability from evaluation values ​​is provided as the reliability calculation unit. here, in Figure 21 in, with figure 1The same parts in have the same reference numerals.

[0213] The information processing apparatus 10a has an image storage unit 21 for storing input image data, and a low-order standard image generation unit 31-c and a low-order reference image generation unit 31-r for reducing the number of bits allocated to pixels. Furthermore, the information processing apparatus 10a has a motion vector informati...

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Abstract

There is provided an apparatus including: a low-bit criterion image generation unit that reduces a bit number assigned to a pixel in a criterion image and generates low-bit criterion image data,a low bit reference image generation unit that reduces a bit number of a reference mage and generates low-bit reference image data,and a motion vector information generation unit that detects a block-unit local motion vector from the low-bit criterion / reference images and calculates reliability of the detected local motion vector. By reducing the image bit number, it is possible to detect a local motion vector in a simple configuration. By calculating a global motion vector using a local motion vector according to reliability, even if a local motion vector is detected from an image of the reduced bit number, it is possible to calculate a global motion vector at higher accuracy.

Description

technical field [0001] The technology relates to an information processing device, an information processing method, and a program. In particular, the present technique enables global motion vector calculation with higher precision with a simple configuration. Background technique [0002] In the past, motion vectors of objects in temporally different images were detected, and, for example, based on the detected motion vectors, motion compensated inter-coding or noise reduction by an inter-temporal filter was performed when performing high-efficiency encoding of images. [0003] As a method of detecting such a motion vector, for example, a block matching method is used. In this block matching method, one screen is divided into blocks having several pixels. Next, an evaluation value representing the degree of similarity of images is calculated using a predetermined evaluation function between the block image data and the search area having block image data of frames differe...

Claims

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Application Information

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IPC IPC(8): H04N7/26H04N19/50H04N19/105H04N19/136H04N19/14H04N19/176H04N19/182H04N19/196H04N19/503H04N19/51H04N19/513H04N19/527H04N19/80H04N19/85
CPCH04N19/0089H04N19/00703H04N19/00303H04N19/00309H04N19/00903H04N19/00593H04N19/182H04N19/184H04N19/521H04N19/527H04N19/80H04N19/85
Inventor 罗俊名云武文
Owner SONY CORP