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Image adjustment amount determination device, method, program and image processing device

A technology for image adjustment and determination devices, which is applied in image data processing, image enhancement, image analysis, etc., and can solve problems such as ambiguity and quantitative relationship

Inactive Publication Date: 2008-06-04
NTT DOCOMO INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, in the above-mentioned Documents 1 and 3, the "magnitude of motion" and "composition of spatial frequency components" are mentioned about the feature quantities of images related to the phenomenon of motion sharpening, but these "magnitude of motion" and "spatial frequency The quantitative relationship between composition of components" and the effect of motion sharpening phenomenon is not clear
In addition, regarding the sharpness perceived when each frame image is viewed as a continuous video, the following experimental results have been reported, that is, when the spatial frequency of each frame image is lowered (that is, when the sharpness is lowered) , it seems to the human eye that there is a certain degree of spatial frequency, but the conditions for maintaining the sharpness perceived by the human eye (hereinafter referred to as "subjective sharpness") (that is, for maintaining the subjective quality conditions) not clear

Method used

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  • Image adjustment amount determination device, method, program and image processing device
  • Image adjustment amount determination device, method, program and image processing device
  • Image adjustment amount determination device, method, program and image processing device

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no. 1 Embodiment approach

[0037] First, the first embodiment according to the present invention will be described. FIG. 1 is a block configuration diagram illustrating the functional configuration of an image adjustment amount specifying device 10 according to the first embodiment. The image adjustment amount determining device 10 is constituted by a computer as hardware, and the computer has a CPU (central processing unit), a storage device such as a memory, and an input / output device (communication device) for inputting and outputting images. Such an image adjustment amount specifying device 10 can be constituted by various information processing devices such as a fixed communication terminal such as a computer, or a mobile communication terminal such as a mobile phone, for example.

[0038] [Functional Block Configuration of Image Adjustment Amount Determining Device 10 ]

[0039] Next, the functional block configuration of the image adjustment amount determining device 10 will be described with re...

no. 2 Embodiment approach

[0111]Next, a second embodiment of the present invention will be described. FIG. 5 is a block configuration diagram showing the functional configuration of an image processing device 50 according to the second embodiment. The image processing device 50 is constituted by a computer as hardware, and the computer has a CPU (Central Processing Unit), a storage device such as a memory, an input / output device (communication device) for inputting and outputting images, and the like. Such an image processing device 50 can be constituted by various information processing devices such as a fixed communication terminal such as a computer, or a mobile communication terminal such as a mobile phone, for example.

[0112] [Functional Block Configuration of Image Processing Device 50 ]

[0113] Next, the functional block configuration of the image processing device 50 will be described with reference to FIG. 5 . As shown in FIG. 5 , an image processing device 50 is configured to include the...

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Abstract

An image adjustment amount determination device comprises: processing target image determination means for receiving an input video signal which comprises a plurality of frame images and which is input from the outside, for dividing the input video signal into the plurality of frame images, and for determining a processing target image which is to be the target of image processing and one or more neighboring images which are located in the vicinity of the processing target image in the display order, on the basis of a predetermined criterion from the plurality of frame images; image characteristic extraction means for extracting a feature quantity relating to the neighboring images thus determined; and image adjustment amount determination means for determining at least one adjustment amount of the amplitude and bandwidth of a spatial frequency component relating to the processing target image thus determined, on the basis of the feature quantity that relates to the neighboring images thus extracted.

Description

technical field [0001] The present invention relates to an image adjustment amount determining device for determining an image adjustment amount, a method for determining an image adjustment amount, a program for determining an image adjustment amount, and an image processing device comprising the above-mentioned image adjustment amount determining device. Background technique [0002] A "video" is constituted by successive "frame images" which are single still images. Image processing, including image acquisition, storage, transmission, display, encoding, and decoding, generally targets images whose sharpness (hereinafter referred to as "sharpness") of each frame image is constant or gradually changes. On the other hand, the human eye can clearly recognize a difference in sharpness of an image. Therefore, the difference in sharpness is often directly related to the evaluation of image quality, and an image with high sharpness is generally evaluated as high quality. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N7/26H04N5/205
CPCG06T2207/10016G06T5/00G06T7/206G06T7/2013G06T5/001G06T7/223G06T7/262
Inventor 藤林晓文仲丞加藤祯笃
Owner NTT DOCOMO INC