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피부 광학 기반의 새로운 생체 인증 기술을 위한 1차원 MSP 모듈 Prototype 개발
김해나(Hae-Na Kim),홍혁기(Hyuck-Ki Hong),최연식(Yeon-Shik Choi),조영창(Young-Chang Jo),김동현(Dong-Hyun Kim) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.11
This paper investigates the possibility of MSP(Multi-spectral Skin Photometrics) as a novel biometric technology to facilitate automatic identification of individuals. MSP using transmission and diffuse reflection difference with variable wavelength provides information about both the surface and subsurface characteristics of the skin tissue. It is found in this paper that 8 people have their unique patterns each other under the same wavelength. Personal difference of skin tissue components concentration and anatomical characteristics measured by multi spectral light offers possibility of MSP as more enhanced biometric technology.
유광호 ( Kwang Ho Yoo ),홍유진 ( Yu Jin Hong ),임윤영 ( Yun Young Lim ),한경연 ( Kyeung Eun Han ),이갑석 ( Kap Sok Li ),김범준 ( Beom Joon Kim ),김명남 ( Myeung Nam Kim ),홍혁기 ( Hyuck Ki Hong ),최연식 ( Yeon Shik Choi ),조영창 ( 대한피부과학회 2009 대한피부과학회지 Vol.47 No.3
Background: The imaging system that`s currently being used in the field of dermatology is based on such instruments as the dermoscope, phototrichograph and camera. In recent years, the use of an image magnification system based on polarization has become popular. Objective: In this study, optical quantification was performed based on the multiwavelength imaging analysis of the structures that form dermatologic diseases, and an attempt was made to enhance the image quality by using polarization technology. Methods: The lesions of three patients who were clinically diagnosed with cherry angioma, melanocytic nevus and inflammatory lesions in acne and freckles were measured at the outpatient clinic of the Department of Dermatology of the authors` hospital. All the patients were female, and their mean age was 29.3 years. Results: The optical characteristics of the patients` various skin lesions, including cherry angioma, melanocytic nevus and inflammatory lesions in acne and freckles, were distinguishable by their wavelength. Conclusion: The use of different kinds of information may be helpful for measuring and diagnosing various skin lesions that have not been differentiated with using the previous modalities. Further, if the various environmental factors that may be generated during the measurement process can be controlled, then these study results can be applied to a standard diagnostic modality in the field of dermatology. (Korean J Dermatol 2009;47(3):303∼308)
정찬희(Chan Hee Jeong),황원희(Won Hee Hwang),홍혁기(Hyuck Ki Hong),최연식(Yeon Shik Choi),조영창(Young Chang Jo) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6
This paper studied the difference between brain waves and pulse waves according to various sound sources. An experiment was conducted to find out the difference between the brain wave and the pulse wave according to the frequency of the sound source and to find out the relationship. As a result, although there are differences depending on the person, the result showed that the sound source with a lot of low frequencies maintains relatively more stability than the sound source with a lot of high frequencies.