Design and evaluation of the compact optical parallel correlator (COPaC) for face recognition

Watanabe, Eiji; Inaba, Rieko; Kawakami, Naoko; Kodate, Kashiko

doi:10.1109/cleopr.2001.971145

Cited by 2 publications

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“…However, in the future it is expected that there will be progress in high-speed devices and high-precision liquid crystal devices, which will improve the parallelism and speed of processing [9]. It has been shown that the system has high robustness to changes in the conditions of acquisition of the face image, and its practical application is expected.…”

Section: Optical Recognition Systemmentioning

confidence: 97%

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Proposal of meta‐data in a database for identification using face images

Inaba

Aizawa

Kodate

2005

Systems & Computers in Japan

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This paper proposes the introduction of meta‐data for efficient retrieval of particular personal data from a large‐scale face database. The face index is calculated from the feature parameters of the face, and is defined as the meta‐data. The purpose of this approach is to structure the database and to minimize the number of database matching operations in retrieval, so that the processing efficiency is improved. In this study, (1) Garson's facial index and (2) the three‐point face index are proposed as the face indexes. For verification, an experiment on face index introduction is performed, using an already constructed optical face recognition system, and an efficiency improvement is demonstrated. © 2005 Wiley Periodicals, Inc. Syst Comp Jpn, 36(3): 53–64, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/scj.10639

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Section: Optical Recognition Systemmentioning

confidence: 97%

“…At the present stage, the COPaC small-scale recognition device achieved a high recognition rate [9]: for 300 registered and unregistered subjects whose images were taken on the same day, the false nonmatch rate (FNMR) was 0%, and the false match rate (FMR) was 0.3%. In another experiment, the database was constructed as follows.…”

Section: Introductionmentioning

confidence: 99%

Proposal of meta‐data in a database for identification using face images

Inaba

Aizawa

Kodate

2005

Systems & Computers in Japan

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“…Research in our laboratory is now under way for further downsizing and increasing the parallelism. We are developing a system of a simpler multiple light source module using a vertical cavity surface emitting laser diode (VCSEL) array as shown in figure 13 [42].…”

Section: Simulation Experiments For Criminal Investigations (Narrow-d...mentioning

confidence: 99%

Facial recognition by a compact parallel optical correlator

Kodate

Inaba

Watanabe

et al. 2002

Meas. Sci. Technol.

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With the progress of information technology, the need for an accurate personal identification system based on biological characteristics is increasing the demand for this type of security technology instead of conventional systems using ID cards or pin numbers. Among other features, the face is the most familiar element and is less subject to psychological resistance. As a simple and compact recognition system satisfying the required performance, we implemented a hybrid system based on the optical recognition principle using a multi-level zone plate as a Fourier-transform lens and we report the preliminary results of their application to face recognition. In this paper, we present the design procedure and fabrication process for an improved version of a second-generation compact parallel correlator (named COPaC II), the size of which is 20 × 24 × 43 cm3 and weight 6 kg. As a result, we obtained a low error rate of 0% as the false match rate and 0.3% as the false non-match rate, thus the COPaC II significant identification security level is sufficiently stable. With the aim of further enhancing the throughput and robustness, we conducted performance tests where the system is used as a computer log-in device and as a pre-screening device for crime investigation. In both experiments, a high rate of successful recognition, such as 90% recognition and 94% rejection rate for log-in, was obtained. Experiments on twins to check the disguise recognition, and on the effects of changes in brightness and arbitrary size of images to test its robustness are also included.

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Design and evaluation of the compact optical parallel correlator (COPaC) for face recognition

Cited by 2 publications

References 0 publications

Proposal of meta‐data in a database for identification using face images

Proposal of meta‐data in a database for identification using face images

Facial recognition by a compact parallel optical correlator

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