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Dive into the research topics where Kashiko Kodate is active.

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Featured researches published by Kashiko Kodate.


Proceedings of SPIE | 2012

High-speed holographic correlation system by a time-division recording method for copyright content management on the internet

Eriko Watanabe; Kanami Ikeda; Kashiko Kodate

Using a holographic disc memory on which a huge amount of data can be stored, we constructed an ultra-high-speed, all-optical correlation system. In this method, multiplex recording is, however, restricted to “one page” on “one spot.” In addition, signal information must be normalized as data of the same size, even if the object data size is smaller. Therefore, this system is difficult to apply to part of the object data scene (i.e., partial scene searching and template matching), while maintaining high accessibility and programmability. In this paper, we develop a holographic correlation system by a time division recording method that increases the number of multiplex recordings on the same spot. Assuming that a four-channel detector is utilized, 15 parallel correlations are achieved by a time-division recording method. Preliminary correlation experiments with the holographic optical disc setup are carried out by high correlation peaks at a rotational speed of 300 rpm. We also describe the combination of an optical correlation system for copyright content management that searches the Internet and detects illegal contents on video sharing websites.


2013 International Conference on Optical Instruments and Technology: Optical Systems and Modern Optoelectronic Instruments | 2013

High-speed holographic correlation system for video identification on the internet

Eriko Watanabe; Kanami Ikeda; Kashiko Kodate

Automatic video identification is important for indexing, search purposes, and removing illegal material on the Internet. By combining a high-speed correlation engine and web-scanning technology, we developed the Fast Recognition Correlation system (FReCs), a video identification system for the Internet. FReCs is an application thatsearches through a number of websites with user-generated content (UGC) and detects video content that violates copyright law. In this paper, we describe the FReCs configuration and an approach to investigating UGC websites using FReCs. The paper also illustrates the combination of FReCs with an optical correlation system, which is capable of easily replacing a digital authorization sever in FReCs with optical correlation.


Archive | 2009

High Speed Holographic Optical Correlator for Face Recognition

Eriko Watanabe; Kashiko Kodate

Owing to the Japanese government plan, U-Japan, which promised to bring about the socalled ‘ubiquitous society’ by 2010, the use of Internet has dramatically increased and accordingly, development of the system through IT networks is thriving. The term ‘ubiquitous society’ became a buzzword, signifying easy access to content on the internet for anybody, anywhere and at any time. Face recognition has become the key technique, as a ‘face’ carries valuable information, captured for security purposes, without physical contact. They can function as identity information for purposes such as login for bank accounts, access to buildings, anti-theft or crime detection systems using CCTV cameras. Furthermore, within the domain of entertainment, face recognition techniques are applied to search for celebrities who look alike. Against this backdrop, a high performance face recognition system is sought after. Face recognition has been used in a wide range of security systems, such as monitoring credit card users, identifying individuals with surveillance cameras and monitoring passengers at immigration control. Face recognition has been studied since the 1970s, with extensive research into and development of digital processing (Kaneko & Hasegawa, 1999; Kanade, 1971 ; Sirovich & Kirby, 1991 ; Savvides, M. et al. 2004). Yet there are still many technical challenges to overcome; for instance, the number of images that can be stored is limited in currently available systems, and the recognition rate needs to be improved to take account of photographic images taken at different angles and in varying conditions. In contrast to digital recognition, optical analog operations process two-dimensional images instantaneously and in parallel, using a lens-based Fourier transform function. In the 1960s, two main types of correlator came into existence; the Vanderlugt Correlator and the Joint Transform Correlator (JTC) (Goodman & Moeller, 2004). Some correlators were a combination of the two (Thapliya & Kamiya, 2000; Kodate Inaba Watanabe & Kamiya, 2002 ; Kobayashi & Toyoda, 1999 ; Carrott Mallaley Dydyk & Mills, 1998). The authors previously proposed and produced the FARCO (Fast Face Recognition Optical Correlator), which was based on the Vanderlugt Correlator((a) Watanabe & Kodate 2005; (b)Watanabe & Kodate, 2005). Combined with high-speed display devices, four-channel processing was able to achieve operational speeds of up to 4000 faces/s. Running trial experiments on a 1-to-N identification basis using the optical parallel correlator, we succeeded in acquiring low error rates of 1 % False Acceptance Rate (FAR) and 2.3 % False Rejection Rate (FRR)( Savvides et O pe n A cc es s D at ab as e w w w .in te ch w eb .o rg


Archive | 2008

Measuring system and measuring method

Kashiko Kodate; Jun Mizuno; Eriko Watanabe; 香椎子 小舘; 潤 水野; 恵理子 渡邉


Archive | 2009

Phase object identification device and method

Eriko Watanabe; Kashiko Kodate


microoptics conference | 2015

Optical duplicate system for satellite-ground laser communication: Reduction of the effects of atmospheric turbulence and simplification of the optical ground station

Tomoko Nakayama; Yoshihisa Takayama; Chiemi Fujikawa; Kashiko Kodate


Archive | 2004

Direction detection element

Kashiko Kodate; Kazuyoshi Kubota; Tomoko Nakayama; Keiko Oka; Nobuo Saito; Shuichi Tamura; 朋子 中山; 和芳 久保田; 香椎子 小舘; 恵子 岡; 信雄 斎藤; 修一 田村


Archive | 2008

Système de vérification de données d'images animées, procédé de création de base de données d'images animées, et système et programme d'enregistrement pour enregistrer des données d'images animées dans une base de données d'images animées

Kashiko Kodate; Eriko Watanabe; Sayuri Ishikawa


Archive | 2008

Image Data Checking System

Kashiko Kodate; Eriko Watanabe


Proceedings of the Society Conference of IEICE | 2005

B-1-33 The Distance Dependence of the Burst Error in Infrared Space Communication during the Rainfall (II)

Kayo Shimizu; Makoto Akiba; Tomomi Ishida; Kazuhiko Wakamori; Kashiko Kodate

Collaboration


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Eriko Watanabe

University of Electro-Communications

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Kanami Ikeda

University of Electro-Communications

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Kayo Shimizu

Japan Women's University

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Jun Mizuno

Japan Women's University

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Keiko Oka

Japan Women's University

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Makoto Akiba

National Institute of Information and Communications Technology

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