Color chart detection device and color chart detection method

A detection device and chart technology, applied in measurement devices, color signal processing circuits, image analysis, etc., can solve problems such as insufficient detection accuracy, and achieve the effect of suppressing the amount of calculation

Active Publication Date: 2016-08-24
FUJITSU LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, if the color chart is to be detected from an image based on its shape feature, there is a possibility that sufficient detection accuracy cannot be obtained.

Method used

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  • Color chart detection device and color chart detection method
  • Color chart detection device and color chart detection method
  • Color chart detection device and color chart detection method

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Experimental program
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Embodiment Construction

[0033] Hereinafter, color chart detection devices based on several embodiments will be described with reference to the drawings.

[0034] The color chart detecting device extracts, from the image represented by the color chart, regions having colors corresponding to several palettes including a specific palette among a plurality of palettes included in the color chart. Furthermore, the color chart detecting means detects that, among the regions corresponding to the colors of the individual palettes of the palette combination including the specific palette, the regions that match the arrangement of the palettes are actually represented by the palettes. area of ​​possibility. Furthermore, the color chart detection device performs the same process for a plurality of combinations including a specific palette, and determines an area detected as having the possibility of the specific palette being reflected in all the combinations as an area where the specific palette is represented...

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Abstract

The present invention provides a color chart detection device for detecting a color chart from an image displayed on a color chart having a plurality of palettes arranged in a predetermined arrangement. For at least three or more predetermined number of palettes, the color chart detection device extracts pixels having color components corresponding to the palettes from the image, and sets at least three of the predetermined number of palettes as For the first group, when the combination of pixels selected for each palette from the pixels extracted from the palettes included in the first group is arranged side by side in accordance with the specified arrangement of the palette, the combination Included pixels are detected as candidate pixels that may be represented by the corresponding palette of the first group, and color information representing colors on the image of the palette corresponding to the candidate pixels and an expression are obtained based on the candidate pixels. Position information for the position on the image for this palette.

Description

technical field [0001] The present invention relates to, for example, a color chart detection device for detecting a color chart represented on an image, a color chart detection method, and a computer program for color chart detection. Background technique [0002] Conventionally, a color chart has been used to correct the color of an image. The color chart has a plurality of palettes, and colors different from each other are added to each palette. For each palette, the color of the area represented by the palette in the image represented by the color chart is compared with the color of the actual palette to measure the change in tone that occurs when the image is generated. Then, color correction is performed on the image so as to eliminate the change in color tone, so that the color tone of the subject reflected in the image becomes a natural color tone. [0003] In order to perform proper color correction, the position of each palette on the image needs to be determined...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): H04N9/64G06T7/00H04N1/60G06V10/56
CPCH04N1/6033G01J3/524G01J2003/466G06V10/245G06V10/56G09G5/06
Inventor皆川明洋胜山裕武部浩明堀田悦伸
OwnerFUJITSU LTD