Dr. Nobutoshi Ojima Profile

Dr. Nobutoshi Ojima

at KAO Corp

SPIE Involvement:

Author

Publications (10)

Proceedings Article | 17 February 2020 Paper

Estimation of melanin concentration, blood concentration, and oxygen saturation in skin tissue layers with different depths unaffected by shading

Kaito Iuchi, Ikumi Nomura, Takanori Igarashi, Nobutoshi Ojima, Norimichi Tsumura

Proceedings Volume 11243, 112430I (2020) https://doi.org/10.1117/12.2545133

KEYWORDS: Skin, Blood, Absorbance, Oxygen, Tissues, Reflectivity, Absorption, Chromophores, Data modeling

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Proceedings Article | 16 February 2017 Paper

Component analysis and synthesis of dark circles under the eyes using a spectral image

Rina Akaho, Misa Hirose, Nobutoshi Ojima, Takanori Igarashi, Norimichi Tsumura

Proceedings Volume 10068, 1006815 (2017) https://doi.org/10.1117/12.2252343

KEYWORDS: Skin, Chromophores, Hyperspectral imaging, Modulation, Image analysis, Absorbance, Monte Carlo methods, Tissues, Reflectivity, RGB color model, Oxygen

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Proceedings Article | 13 March 2015 Paper

Principal component analysis for surface reflection components and structure in the facial image and synthesis of the facial image in various ages

Misa Hirose, Saori Toyota, Nobutoshi Ojima, Keiko Ogawa-Ochiai, Norimichi Tsumura

Proceedings Volume 9398, 939809 (2015) https://doi.org/10.1117/12.2076694

KEYWORDS: Principal component analysis, Reflectivity, Skin, Modulation, Databases, Discrete wavelet transforms, Light sources, Image processing, Independent component analysis, Cameras

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SPIE Journal Paper | 9 January 2014 Open Access

Reduction of shading-derived artifacts in skin chromophore imaging without measurements or assumptions about the shape of the subject

Kenichiro Yoshida, Izumi Nishidate, Nobutoshi Ojima, Kayoko Iwata

JBO, Vol. 19, Issue 01, 016009, (January 2014) https://doi.org/10.1117/12.10.1117/1.JBO.19.1.016009

KEYWORDS: Chromophores, Skin, Reflectivity, Californium, Error analysis, Scattering, Absorbance, Cameras, Light sources, Absorption

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SPIE Journal Paper | 1 March 2013 Open Access

Application of the critical angle method to refractive index measurement of human skin in vivo under partial contact

Kenichiro Yoshida, Kohji Ohkubo, Nobutoshi Ojima, Kayoko Iwata

JBO, Vol. 18, Issue 03, 037002, (March 2013) https://doi.org/10.1117/12.10.1117/1.JBO.18.3.037002

KEYWORDS: Skin, Reflectivity, In vivo imaging, Refractive index, Prisms, Water, Silicon, Reflection, Absorption, Interfaces

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SPIE Journal Paper | 1 November 2011 Open Access

Simple and effective method for measuring translucency using edge loss: optimization of measurement conditions and applications for skin

Kenichiro Yoshida, Nobutoshi Komeda, Nobutoshi Ojima, Kayoko Iwata

JBO, Vol. 16, Issue 11, 117003, (November 2011) https://doi.org/10.1117/12.10.1117/1.3646208

KEYWORDS: Translucency, Reflectivity, Skin, Scattering, Point spread functions, Ultraviolet radiation, Micro unmanned aerial vehicles, Reflectometry, Reflection, Absorption

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Proceedings Article | 18 February 2011 Paper

Analysis on unevenness of skin color using the melanin and hemoglobin components separated by independent component analysis of skin color image

Nobutoshi Ojima, Izumi Fujiwara, Yayoi Inoue, Norimichi Tsumura, Toshiya Nakaguchi, Kayoko Iwata

Proceedings Volume 7897, 78971M (2011) https://doi.org/10.1117/12.873494

KEYWORDS: Skin, Chromophores, Independent component analysis, Spatial frequencies, Image analysis, Modulation, Image processing, Reflection, Image resolution, Quantitative analysis

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Proceedings Article | 25 April 2005 Paper

Quantification method for the appearance of melanin pigmentation using independent component analysis

Nobutoshi Ojima, Natsuko Okiyama, Saya Okaguchi, Norimichi Tsumura, Toshiya Nakaguchi, Kimihiko Hori, Yoichi Miyake

Proceedings Volume 5686, (2005) https://doi.org/10.1117/12.589611

KEYWORDS: Skin, Independent component analysis, Chromophores, Image analysis, Reflection, Image filtering, Imaging systems, Light sources and illumination, Electronic filtering, Digital cameras

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Proceedings Article | 8 June 2001 Paper

Correlation map analysis between appearances of Japanese facial images and amount of melanin and hemoglobin components in the skin

Norimichi Tsumura, Keiji Uetsuki, Nobutoshi Ojima, Yoichi Miyake

Proceedings Volume 4299, (2001) https://doi.org/10.1117/12.429496

KEYWORDS: Skin, Independent component analysis, Imaging systems, Visualization, Electroluminescence, Visual analytics, Signal processing, Color reproduction, Image analysis, Color image segmentation

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Proceedings Article | 7 September 1998 Paper

Development and standardization of a spectral characteristics database for evaluating color reproduction in image input devices

Johji Tajima, Masato Tsukada, Yoichi Miyake, Hideaki Haneishi, Norimichi Tsumura, Masayuki Nakajima, Yoshihiko Azuma, Tetsuo Iga, Masao Inui, Noboru Ohta, Nobutoshi Ojima, Sei Sanada

Proceedings Volume 3409, (1998) https://doi.org/10.1117/12.324095

KEYWORDS: Printing, Databases, Sensors, Color reproduction, Visualization, Standards development, Reflectivity, Skin, Photography, Remote sensing

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Showing 5 of 10 publications

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