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Paper Abstract and Keywords
Presentation 2020-06-03 13:00
Luminance-Independent Hue Image Generation Method Based on CIELAB Color Space
Yuma Kinoshita, Hitoshi Kiya (Tokyo Metro. Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we propose luminance-independent hue-image generation method based on the CIELAB color space, from RAW images taken by commonly-used digital cameras. The color constancy of human vision has not been reproduced on a computer yet. In other words, colors of images captured by cameras are affected by lighting conditions at the time of shooting. Furthermore, non-linear operations in the cameras change colors of resulting RGB images. In the proposed method, the white balance is adjusted precisely according to a lighting condition of scene and then the brightness and saturation in CIELAB color space are equalized. The proposed method enables us to display the hue information of a scene appropriately on a typical display because pixel values are processed in the proposed method so that all pixel values of a final hue image are within the sRGB color gamut. A hue image generation experiment using two pairs of real images show that the proposed method can produce a hue image without the effect of luminance.
Keyword (in Japanese) (See Japanese page) 
(in English) Color Image Processing / Color Cnstancy / CIELAB Color Space / RGB Color Space / Hue Image / / /  
Reference Info. ITE Tech. Rep.
Paper #  
Date of Issue  
ISSN Print edition: ISSN 1342-6893  Online edition: ISSN 2424-1970
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Conference Information
Committee 3DIT IEICE-SIS IPSJ-AVM  
Conference Date 2020-06-03 - 2020-06-04 
Place (in Japanese) (See Japanese page) 
Place (in English) G Square (Hakodate Community Plaza) 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Intelligent Multimedia Systems, Applied Enbedded Systems, Three-Dimensional Image Technology (3DIT), etc. 
Paper Information
Registration To IEICE-SIS 
Conference Code 2020-06-SIS-AVM-3DIT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Luminance-Independent Hue Image Generation Method Based on CIELAB Color Space 
Sub Title (in English)  
Keyword(1) Color Image Processing  
Keyword(2) Color Cnstancy  
Keyword(3) CIELAB Color Space  
Keyword(4) RGB Color Space  
Keyword(5) Hue Image  
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1st Author's Name Yuma Kinoshita  
1st Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
2nd Author's Name Hitoshi Kiya  
2nd Author's Affiliation Tokyo Metropolitan University (Tokyo Metro. Univ.)
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Speaker
Date Time 2020-06-03 13:00:00 
Presentation Time 20 
Registration for IEICE-SIS 
Paper #  
Volume (vol) ITE-44 
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#Pages ITE- 
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