Dr. Sangyi Yi Profile

Dr. Sangyi Yi

at ETRI

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Author

Publications (12)

Proceedings Article | 28 September 2006 Paper

Optical visual cryptography based on the phase characteristics of spatial light modulator

Sang-Yi Yi, Chung-Sang Ryu, Seung-Hyun Lee

Proceedings Volume 6402, 64020A (2006) https://doi.org/10.1117/12.689483

KEYWORDS: Cryptography, Visualization, Visual optics, LCDs, Spatial light modulators, Image processing, Image compression, Binary data, Image resolution, Signal processing

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Proceedings Article | 20 March 2001 Paper

Evaluation of correlation in optical encryption by using visual cryptography

Sang-Yi Yi, Chung-Sang Ryu, Dae-Hyun Ryu, Seung-Hyun Lee

Proceedings Volume 4387, (2001) https://doi.org/10.1117/12.421145

KEYWORDS: Cryptography, Visualization, Visual optics, Image processing, Image compression, Spatial light modulators, Optical correlators, Computer generated holography, Binary data, Holograms

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Proceedings Article | 3 May 2000 Paper

Multiviewpoint autostereoscopic display system based on volume hologram

Seung-Hyun Lee, Hoon-Gee Yang, Sang-Yi Yi, Kwang-Chul Son, Eun-Soo Kim

Proceedings Volume 3957, (2000) https://doi.org/10.1117/12.384444

KEYWORDS: Multispectral imaging, Holograms, Volume holography, Crystals, LCDs, 3D displays, Cameras, Multiplexing, Mirrors, Autostereoscopic displays

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Proceedings Article | 19 July 1999 Paper

Encryption of optical image using BCGH and visual cryptography

Sang-Yi Yi, Chung-Sang Ryu, Dal-Gyu Kim, Seung-Hyun Lee

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354746

KEYWORDS: Visualization, Cryptography, Image encryption, Computer generated holography, Optical image encryption, Visual optics, Binary data, Image processing, Signal to noise ratio, Holograms

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Proceedings Article | 9 March 1999 Paper

Fingerprint identification by use of a volume holographic optical correlator

Seung-Hyun Lee, Sang-Yi Yi, Eun-Soo Kim

Proceedings Volume 3715, (1999) https://doi.org/10.1117/12.341313

KEYWORDS: Volume holography, Holograms, Optical correlators, Fourier transforms, Crystals, Databases, Spatial light modulators, Holography, Optical filters, Multiplexing

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Proceedings Article | 23 March 1998 Paper

Rotational robust fingerprint recognition system using Dove prisms

Sang-Yi Yi, Chang Ryu, Seung-Hyun Lee, Kwang-Hoon Cha, Chang-Goo Kang

Proceedings Volume 3386, (1998) https://doi.org/10.1117/12.304767

KEYWORDS: Prisms, Image filtering, Target detection, Image resolution, Fingerprint recognition, Phase only filters, Optical correlators, Spatial filters, Optical filters, Charge-coupled devices

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Proceedings Article | 1 March 1998 Paper

Rotation-invariant fingerprint identification using circular harmonic expansion

Sang-Yi Yi, Chang Ryu, Seung-Hyun Lee, Kwang-Hoon Cha, Young-Min Seo

Proceedings Volume 3240, (1998) https://doi.org/10.1117/12.300059

KEYWORDS: Fingerprint recognition, System identification, Joint transforms, Optical correlators, Computer simulations, Computing systems

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Proceedings Article | 1 September 1996 Paper

Optical image switching system based on the BPEJTC

Sang-yi Yi

Proceedings Volume 2778, 27787O (1996) https://doi.org/10.1117/12.2299159

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Proceedings Article | 15 March 1996 Paper

Optical fingerprint identification based on binary phase extraction joint transform correlator

Seung-Hyun Lee, Ho-Byoung Chae, Sang-Yi Yi, Eun-Soo Kim

Proceedings Volume 2752, (1996) https://doi.org/10.1117/12.235654

KEYWORDS: Fingerprint recognition, Joint transforms, Binary data, System identification, Optical correlators, Charge-coupled devices, LCDs, Computer simulations, Spatial frequencies, Phase matching

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Proceedings Article | 28 March 1995 Paper

BPEJTC-based segmentation of a moving target in natural background

Sang-Yi Yi, Chang Ryu, Eun-Soo Kim, Hoon-Gee Yang

Proceedings Volume 2490, (1995) https://doi.org/10.1117/12.205783

KEYWORDS: Image segmentation, Detection and tracking algorithms, Optoelectronics, Computing systems, Image processing algorithms and systems, Optical correlators, Fourier transforms, Sensors, Target recognition, Spatial filters

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Proceedings Article | 1 March 1994 Paper

Multitarget tracking system based on binary phase extraction joint transform correlator and neural data association algorithm

Sang-Yi Yi, Chang Ryu, Eun-Soo Kim

Proceedings Volume 2237, (1994) https://doi.org/10.1117/12.169434

KEYWORDS: Detection and tracking algorithms, Binary data, Target detection, Joint transforms, Target recognition, Neural networks, Optical tracking, Optical pattern recognition, Evolutionary algorithms, LCDs

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Proceedings Article | 30 October 1992 Paper

Real-time target tracking system based on joint transform correlator and neural network algorithm

Eun-Soo Kim, Sang-Yi Yi, Jin-Ho Lee

Proceedings Volume 1812, (1992) https://doi.org/10.1117/12.131208

KEYWORDS: Neural networks, Optical tracking, Detection and tracking algorithms, Evolutionary algorithms, Optical correlators, Joint transforms, LCDs, Optical computing, Fourier transforms, Neurons

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Showing 5 of 12 publications

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