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Image correction apparatus, and image correction program

一种图像、光源的技术，应用在图像补正装置领域，能够解决图像不协调等问题

Inactive Publication Date: 2010-05-26
CASIO COMPUTER CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since the image correction device described above corrects the photographed image for each region, there is a problem that image incongruity occurs on the boundary line of each corrected region in the corrected photographed image.

Method used

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  • Image correction apparatus, and image correction program
  • Image correction apparatus, and image correction program
  • Image correction apparatus, and image correction program

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Embodiment Construction

[0022] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0023] First, use figure 1 The functional configuration of the imaging device 1 shown as the embodiment of the present invention will be described. The imaging device 1 has an image correction function for correcting a photographed image obtained by photographing a subject. Therefore, the function of the image correction device described below is not necessarily limited to the embodiment mounted on the imaging device 1 , and the function as the image correction device can also be realized on a personal computer, for example.

[0024] Such as figure 1 As shown, the imaging device 1 includes: an imaging optical system 11, an imaging unit 12, an imaging processing unit 13, a memory card processing unit 14, a control unit 15, a key input unit 16, a program memory 17, a data memory 18, and a light emission calculation unit 19. , an image compression unit 20 , a main displ...

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Abstract

An image correction apparatus reduces unnaturalness resulting from a light-source state by execution of separating captured image data into luminance data and color-difference data, converting the color-difference data into a set of amplitude values in a spatial frequency domain, detecting a light-source state when the image data is captured, correcting the set of amplitude values based on the light-source state so that a predetermined amplitude value is decreased, inversely converting the set of amplitude values which is corrected to produce corrected color-difference data, and generating corrected image data from the corrected color-difference data and the luminance data.

Description

technical field [0001] The present invention relates to an image correction device and an image correction method for correcting a photographed image captured by an imaging device. Background technique [0002] Conventionally, as the technique described in Japanese Patent Laid-Open No. 2008-052428 , there is known an image correction device for a photographed image photographed in a photographing environment where a plurality of light sources such as sunlight or illumination light exist. This image correction device divides a photographed image into a plurality of regions, and performs different image correction processing for each region. In this way, the image correction device can reduce the influence on the photographed image due to the presence of a plurality of light sources at the time of photographing, and can obtain a preferable corrected image. [0003] However, since the image correction apparatus described above corrects the photographed image for each region, t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232G06T1/00
CPCH04N19/00775H04N1/6086H04N9/735H04N19/60H04N23/88H04N9/73H04N23/00
Inventor 八幡尚
Owner CASIO COMPUTER CO LTD
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