Presentation 2017-12-15
Color Image Enhancement in HSI Color Space with Saturation Correction
Minako Kamiyama, Akira Taguchi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) In color image processing, hue preserving is required. Therefore, perceptual color models such as HSI and HSV have been used. Hue-Saturation-Intensity (HSI) is a public color model, and many color applications have been made based on this model. However, the transformation from the conventional HSI (C-HSI) color space to the RGB color space after processing intensity/saturation in the C-HSI color space usually generates the gamut problem, because the shape of C-HSI color space is a triangular pyramid which is included RGB color space. When the output of intensity/saturation processing result is located in the outside of the common region of RGB color space and C-HSI color space, it is necessary to change the saturation value. We proposed the effective way of hue preserving saturation correction algorithm. According to the proposed saturation correction algorithm, the corrected saturation value is same as the processing result in the ideal HSI color space whose gamut same as the RGB gamut.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) RGB color model / HSI color model / saturation correction / gamut
Paper # SIS2017-49
Date of Issue 2017-12-07 (SIS)

Conference Information
Committee SIS
Conference Date 2017/12/14(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Tottori Prefectural Center for Lifelong Learning
Topics (in Japanese) (See Japanese page)
Topics (in English) System on Silicon, Short Range Wireless Systems, etc.
Chair Hirokazu Tanaka(Hiroshima City Univ.)
Vice Chair Takayuki Nakachi(NTT) / Noriaki Suetake(Yamaguchi Univ.)
Secretary Takayuki Nakachi(Kanagawa Inst. of Tech.) / Noriaki Suetake(Kyushu Inst. of Tech.)
Assistant Masaaki Fujiyoshi(Tokyo Metropolitan Univ.) / Takanori Koga(NIT, Tokuyama Col.)

Paper Information
Registration To Technical Committee on Smart Info-Media Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Color Image Enhancement in HSI Color Space with Saturation Correction
Sub Title (in English)
Keyword(1) RGB color model
Keyword(2) HSI color model
Keyword(3) saturation correction
Keyword(4) gamut
1st Author's Name Minako Kamiyama
1st Author's Affiliation Tokyo City University(Tokyo City Univ.)
2nd Author's Name Akira Taguchi
2nd Author's Affiliation Tokyo City University(Tokyo City Univ.)
Date 2017-12-15
Paper # SIS2017-49
Volume (vol) vol.117
Number (no) SIS-349
Page pp.pp.89-94(SIS),
#Pages 6
Date of Issue 2017-12-07 (SIS)