Welcome to Yoshimura Lab.！　 In this laboratory, researches on biometrics and optical information processing system are mainly being studied. A paper was presented at the 2023 IEEE 12th Global Conference on Consumer Electronics (GCCE 2023) at Nara Royal Hotel, Japan on Oct. 10th, 2023. An original paper was published in the Optical Engineering (Vol.57, No.1, 2018). A paper was presented at the Information Photonics 2017 (IP'17) at Pacifico Yokohama, Japan on Apr. 20th, 2017. A paper was presented at the 10th International Conference on Optics-photonics Design and Fabrication (ODF'16) at University of Ravensburg-Weingarten, Germany on Mar. 2nd, 2016. An original paper was published in the International Journal of Multimedia and Image Processing (Vol.4, Issues 3/4, 2014). An original paper was published online in the Optics and Lasers in Engineering on Dec. 18th, 2014. A paper was presented at the World Congress on Internet Security (WorldCIS-2014) in Heathrow Windsor Marriott Hotel, UK on Dec. 8th, 2014. Two papers presented at ICEM2013 and ACEM12 were published in Proceedings of SPIE on Jun.2nd, 2014. Two papers were presented at the International Conference on Experimental Mechanics 2013 (ICEM2013) and the Twelfth Asian Conference on Experimental Mechanics (ACEM12) in Swissotel Le Concorde Bangkok on Nov. 25th, 2013. An original paper was published in the International Journal for Information Security Research (Vol.3, Issue 2, 2013). An original paper was published in the International Journal of Communications, Network and System Sciences in Mar. 2012 (Vol.5, No.3). An original paper was published in the International Journal of Communications, Network and System Sciences in Dec. 2011 (Vol.4, No.12A). A paper was presented at The 6th International Conference for Internet Technology and Secured Transactions (ICITST-2011) in The Yas Hotel, Abu Dhabi, UAE, on Dec. 12th, 2011. A paper was presented at The Ninth Japan-Finland Joint Symposium on Optics in Engineering (OIE'11) in Radisson Blu Marin a Palace Hotel, Turku, Finland, on Sep. 8th, 2011. A paper was published in the State of the Art in Biometrics, edited by Jucheng Yang and Loris Nanni, InTech, in Jul. 2011. A paper was published in the Fourier Transforms - Approach to Scientific Principles, edited by Goran Nikolic, InTech, in Apr. 2011. An original paper was published in the International Journal of Communications, Network and System Sciences in Jan. 2011 (Vol.4, No.1). An original paper was published in the International Journal of Communications, Network and System Sciences in Sep. 2010 (Vol.3, No.9). A paper was presented at the 2010 IEEE 17th International Conference on Image Processing (ICIP2010) in The Hong Kong Convention and Exhibition Centre, Hong Kong, China, on Sep. 28th, 2010. A paper was presented at the 7th International Conference on Optics-photonics Design & Fabrication (ODF'10) in Pacifico Yokohama, Japan, on Apr. 20th, 2010. Two papers were presented at the 57th Spring Meetings of the Japan Society of Applied Physics and Related Societies, in Tokai University, Japan, on Mar. 17 and 18, 2010. A paper was presented at the Optics & Photonics Japan 2009, sponsered by The Optical Society of Japan, in the Toki Messe (Niigata Convention Center), Japan, on Nov. 26th, 2009. A paper was presented at Eighth Japan-Finland Joint Symposium on Optics in Engineering, in Tokyo University of Science, Japan, on Sep. 4th, 2009. A paper (No.7442-26) was presented at Optical Engineering + Applications (Part of SPIE Optics + Photonics 2009), in San Diego, USA, on Aug. 6th, 2009. "Development of the high-speed information encryption system by use of the fractional Fourier transform" was selected as the "Research for Promoting Technological Seeds in 2009" supported by the Japan Science and Technology Agency (JST). (Jun. 22nd, 2009) A review entitled "Encryption technology of image information by use of the fractional Fourier transform" was published in Chemical Engineering, Vol.54. No.5 (2009) in Japanese. Two papers were presented at the 56th Spring Meetings of the Japan Society of Applied Physics and Related Societies, in University of Tsukuba, Japan, on Mar. 31st, 2009. Two papers were presented at the Optics & Photonics Japan 2008, sponsered by The Optical Society of Japan, in the Tsukuba International Congress Center, Japan, on Nov. 5th, 2008. Two papers were presented at ICSP'08 (9th International Conference on Signal Processing) in Beijing, China, on Oct. 28th & 29th, 2008. Ms. Iwai gave her presentation at the society for the study of Office Information System (OIS), IEICE, in Keyaki Kaikan, Chiba University on May 23rd, 2008. Our laboratory has moved to the Graduate School of Science and Technology, Building 2. Ms. Iwai and Mr. Takeishi gave their presentations at students' society of Tokyo Chapter, IEICE, in Tokyo Denki University on March 1st, 2008.