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Article
Proceedings of the 25th annual meeting
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Article
Parallel Modified Signed-Digit Computing for Large-Scale Two Dimensional Data Array
We propose a novel parallel algorithm of modified signed-digit (MSD) computing, in which MSD digits are encoded to three bit plane (BP) patterns. The addition of two MSD data arrays is performed with two steps...
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Article
Broad-Band Light-Wave Correlation Topography Using Wavelet Transform
The absolute longitudinal distance between two points can be determined by the corresponding correlation peaks of two light-waves from a broad-band light source. Using this technique, the height of three-dimen...
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Article
Optical Module for Modified Signed-Digit Computing Based on Bit Plane Encoding and Pattern Operations
We propose here a new optical modified signed-digit (MSD) adder module based on bit plane pattern encoding of MSD digits and pattern operations. The pattern operations required in the algorithm are duplication...
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Article
Development of spatial light modulators with nonlinear organic materials
An electrically addressable spatial light modulator is designed using nonlinear organic materials for optical information processing and display. One candidates for spatial light modulator (SLM) material is a ...
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Article
Adaptive computer-generated hologram using interpolation method
Kinoform synthesis by an electro-optic hybrid system using an interpolation method is proposed. A programmable liquid crystal spatial light modulator is used as a kinoform. The phase distribution of the kinofo...
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Article
Adaptive computer-generated hologram using interpolation method
Kinoform synthesis by an electro-optic hybrid system using an interpolation method is proposed. A programmable liquid crystal spatial light modulator is used as a kinoform. The phase distribution of the kinofo...
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Article
Optimal Incoherent Filtering for Distortion-Invariant Image Recognition
An optimal incoherent filter is proposed for distortion-invariant correlation. The optical transfer function (OTF) of the correlator is specified as a realizable phase-only term which is optimized by the simul...
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Article
Optical Entropy Network Mapped from Binary Feature Tree
The concept of a binary feature tree (BFT) and the principle of its formation are described. A pattern is divided into sub-parts by comparing its similarity with other patterns. The BFT is established by sub-p...
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Article
Spatial Arrangement of Small Particles by Imaging Laser Trap** System
We describe spatial arrangement of polystyrene latex using a microscopic imaging system. A reduced photomask pattern is imaged on the particles in a water-filled cell so that polystyrene spheres align in a two...
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Article
Diffraction-Based Spatial Light Modulation: Transverse Linear Electrooptic Effect in Polymers
We propose a new type of spatial light modulator using nonlinear organic polymer film as a phase modulation element. Using polymer poly-Disperse Red-19 Toluendiiso-cyanate, a more than 150:1 contrast ratio has...
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Article
Beam Profile Monitoring of Synchrotron Radiation by Adaptive Optics
A beam profile monitoring system for synchrotron radiation, designed to evaluate the distribution of a cross section of the electron beam in a high-energy accelerator storage ring in real-time is descripted. T...
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Article
Optical Implementation of Entropy Network Mapped from Binary Feature Tree
An entropy network mapped from a binary feature tree is described and compared with the Hamming net. Implementation of the entropy network includes extracting features from an input and making the decision acc...
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Article
Nonmechanical Optical Manipulation of Microparticle Using Spatial Light Modulator
A spatial light modulator (SLM) is introduced to an optical manipulation system. The real-time reconfigurable feature of the SLM makes it possible to perform an optical manipulation of microparticles without m...
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Article
Phase Retrieval of Phase-Shifting Interferometry with Iterative Least-Squares Fitting Algorithm: Experiments
We report our experimental results of phase-shifting interferometry with an iterative least-squares fitting technique to estimate both the wave front phases and the phase shifts. The method allows phase retrie...
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Article
Fractional Fringe Order Method Using Fourier Analysis for Absolute Measurement of Block Gauge Thickness
A fringe analysis method, which combines the Fourier transform with the fractional fringe order method for measuring the absolute thickness of a block gauge, is presented. An approximate integer part of the fr...
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Article
Direct Fabrication Methods of Surface Relief Electro-Optic Gratings in Azo-Polymer Films
Two fabrication methods of surface relief electro-optic (EO) gratings in azo-polymer films are described: surface deformation by a continuous wave laser and laser ablation by a pulse laser. In the fabrication ...
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Article
Explanation of Human Skin Color by Multiple Linear Regression Analysis Based on the Modified Lambert-Beer Law
Quantitative analysis of human skin color is needed in the medical and cosmetic fields. Because of the strong light scattering by biological tissues, however, analysis of skin color has not yet been fully succ...
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Article
Polarization-Sensitive Spectral Interferometric Optical Coherence Tomography for Human Skin Imaging
Polarization-sensitive spectral interferometric optical coherence tomography (PS-SI-OCT) is designed for imaging of the inner structure of a biological tissue with polarization properties corresponding to Müll...
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Article
Polarization Sensitive Spectral Interferometric Optical Coherence Tomography for Biological Samples
A spectral interferometric optical coherence tomography (OCT) system which has polarization sensitivity is developed. This system reduces the mechanical scanning dimension by employing the principle of spectra...
