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检索条件"任意字段=Conference on Algorithms, Devices, and Systems for Optical Information Processing"

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Functional MR image registration using a genetic algorithm

Functional MR image registration using a genetic algorithm

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International conference on Neural information processing

作者： J.C. Rajapakse B. Guojun School of Applied Science Nanyang Technological University Singapore

Image registration is formulated as a problem of finding optimal linear intensity and spatial transformations. A genetic algorithm is proposed to find optimal parameters of the transformations. The new approach is use... 详细信息

关键词： Image registration Genetic algorithms optical imaging Head Brain Magnetic resonance imaging Multidimensional systems Humans Stochastic processes Simulated annealing

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ILFE sensor using laser chirp and arc-tangent algorithm

ILFE sensor using laser chirp and arc-tangent algorithm

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Pacific Rim conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： Seungho Cho Hojoon Lee Kisoo Kim Department of Information Communication Engineering Hoseo University Asan ChungNam South Korea Institute of Ssang Yong Construction Tech Laboratory Daejeon South Korea

An in-line fibre etalon sensor system using the laser chirp and three wavelength arc-tangent algorithm to measure the absolute phase is studied. We proposed and proved the new algorithm by performing the experiments. ... 详细信息

关键词： Chirp Signal processing algorithms optical fiber sensors Wavelength measurement Strain measurement optical signal processing Magnetic sensors Capacitive sensors optical sensors Sensor systems

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High speed optical scanner for multi-dimensional beam pointing and acquisition

High speed optical scanner for multi-dimensional beam pointi...

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IEEE Photonics conference (IPC)

作者： N.A. Riza Yu Huang Photonic Information Processing Systems (PIPS) Laboratory The School of Optics and Center of Research and Education in Optics and Lasers (CREOL) University of Central Florida Orlando FL USA

We report on a novel multi-dimensional optical scanning technique based on fiber-based wavelength division multiplexed (WDM) technology. This scanner can provide a large field of view (e.g., up to 360 degrees), a large scanning volume, a fast scanning speed, and the ability to scan a complicated three-dimensional (3-D) geometry. WDM devices have been recently used in telecommunication optical networks.

关键词： High speed optical techniques optical filters optical crosstalk Laser beams Lenses Laser tuning Tunable circuits and devices Fiber lasers optical fiber devices optical interconnections

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Telepathology system for microscopic images utilizing super high definition imaging system over B-ISDN

Telepathology system for microscopic images utilizing super ...

引用

conference on Image Display at Medical Imaging 1999

作者： Okumura, A Furukawa, I Fujii, T Ishimaru, K Sakano, T Suzuki, J Ono, S Hata, J Ashihara, T NTT Optical Network Systems Labs. (Japan) Keio Univ. School of Medicine (Japan) Kyoto Prefectural Univ. of Medicine (Japan)

ISBN: (纸本)0819431303

It has been recognized early on that digitizing medical information makes diagnostic technology more advanced and efficient. In order to convert image information, which comprises the majority of all medical information, into digital data, various technologies including those for input, processing, transmission storage, and display need to develop at roughly the same pace. To date, there have been few cases where this has been done. However, recent major advances in high-resolution image input/output, image encoding, super-fast transmission, high-capacity storage, and other technologies have intensified the drive towards digitizing and networking all medical information. This paper will show that the spread of super-high-speed networks capable of transmitting large amounts of data in a short time is indispensable for accurate medical diagnosis, and that this will make it possible to realize an integrated medical information system. A target application for the medical image diagnosis of the Super High Definition (SHD) images being developed by the authors of this paper is telepathology, which particularly demands high-quality images. In this paper, we will study, among other things, the concrete issues crucial to building and networking a digital system and the approach to resolving such issues. We will also report on the building of our experimental system that fulfils such demands as well as discuss a pathological microscopic image transmission system with image quality that will not lower diagnostic accuracy and fast response and good operability that will not make diagnosticians feel impatient. Finally, we will discuss a test in which we remotely operated a microscope over an ATM line to prove that it is possible to capture, transmit, and display a still super-high-definition digital image with a resolution of 2,048 x 2,048 pixels in about 5 seconds.

关键词： pathological microscopic images super-high-definition (SHD) images telemedicine telepathology ATM (Asynchronous Transfer Mode) image transmission B-ISDN (Broadband-Integrated Services Digital Network)

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Color image reproduction based on spectral reflectance information

Color image reproduction based on spectral reflectance infor...

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International conference on Knowledge-Based Intelligent information Engineering systems (KES)

作者： S.C. Ahn H.E. Choi Y. Miyake Division of Image & Information Engineering Pukyong National University South Korea Department of Computer Science Dong-Pusan College Department of Information and Image Science Chiba University Japan

We have developed color image processing systems based on spectral reflectance information for color recording and reproduction of natural color objects. This system consists of a multiband acquisition system and comp... 详细信息

关键词： Reflectivity Charge coupled devices Charge-coupled image sensors Vectors Image color analysis Principal component analysis Covariance matrix optical filters Bismuth Remotely operated vehicles

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All solid state laser image amplifier system with polymer dye

All solid state laser image amplifier system with polymer dy...

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Pacific Rim conference on Lasers and Electro-Optics (CLEO/Pacific Rim)

作者： T. Asano T. Omatsu S. Ashihara T. Shimura K. Kuroda Institute of Industrial Science University of Tokyo Minato Tokyo Japan Chiba University Inage Chiba Japan

An all-optical image brightness amplifier is a key device in parallel optical data processing systems. It works like an Er-doped fiber amplifier in optical fiber communication systems. The laser image amplifier can recover the energy loss of the spatially two-dimensional and temporally one-dimensional optical signal without losing the phase information of the light. Recently, solid dye laser materials have improved steadily, and the dye doped polymer amplifier is now commercially available. Also, diode-pumped Nd:YAG laser systems also become very popular. Thus, the reality of a compact all solid state laser image amplifier system is growing. In the paper, we show the basic performance of the polymer dye laser amplifier system for an image amplification system.

关键词： Solid lasers optical amplifiers Fiber lasers Semiconductor optical amplifiers Stimulated emission optical devices optical polymers Brightness Data processing Erbium-doped fiber amplifier

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optical interconnects by hot embossing for module and PCB technology-the EOCB approach

Optical interconnects by hot embossing for module and PCB te...

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Electronic Components and Technology conference (ECTC)

作者： D. Krabe W. Scheel Fraunhofer-Institute of Reliability and Microintegration Berlin Berlin Germany

The growing interest in optical interconnects at module and PCB level (printed circuit board) results from the request for higher data rates and increased performance. Using glass and polymer optical fibers together with optoelectronic components, light is introduced as a transport medium for information transfer, preventing cross-talk and electrical attenuation at high frequencies. The optical interconnection technology within these components is well developed. But in general these components are pigtailed. The result is that the systems involving electrical and optical functionality cannot be assembled by SMD processing (surface mounted devices) at board and module level. Additional pick and place steps are necessary. Here the EOCB approach (electrical optical circuit board) will provide a solution. Within the PCB an additional optical layer with waveguiding structures serves as optical interconnection wiring. That means this new carrier can inexpensively merge with current methods of commercial manufacturing equipment. In the result the assembly process will be more effective.

关键词： optical interconnections Embossing optical attenuators optical crosstalk Printed circuits Glass optical polymers optical fibers Frequency optical devices

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The third eye approach to innovative designs and applications: human recognition system by nonlinear oscillations

The third eye approach to innovative designs and application...

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Proceedings of the International conference on Intelligent processing and Manufacturing of Materials, IPMM

作者： S. Oka Y. Takefuji W. Huang Graduate School of Media and Governance Keio University Fujisawa Japan

The field of remote sensing and sensor technology has undergone tremendous development in the past decades. Sensor technologies of all kinds such as electro-optics, acoustic, active/passive UV to LWIR, ground-penetrating radar, passive mm wavelength, X-ray tomography, neutron activation imaging, multispectral, hyper-spectral, and ultra-spectral imaging, provide valuable images that normal CCD cameras cannot offer. By combining algorithms and images taken by sensors at different ranges of the electromagnetic spectrum, we are able to extract valuable images automatically. By using multi-spectral images and processing them with neural network computing, our "third eye" team is able to extract human face features from those images. We present an application for detecting human facial parts, images taken by different imaging systems and sensors, and the current status of image processing applications.

关键词： Acoustic sensors Charge-coupled image sensors Acoustic imaging optical imaging Image sensors Humans Face detection Remote sensing Electrooptic devices Acoustic waves

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Self-aligning 2/spl times/2 fiber-optic switch using liquid crystals

Self-aligning 2/spl times/2 fiber-optic switch using liquid ...

引用

IEEE Photonics conference (IPC)

作者： S. Sumriddetchkajorn D.K. Sengupta N.A. Riza Central Florida Univ. Orlando FL USA Photonics Information Processing Systems (PIPS) Laboratory The School of Optics and the Center of Research and Education in Optics and Lasers University of Central Florida Orlando FL USA

Summary form only given. One option for self alignment is to use ferroelectric liquid crystals (FLCs) to form a high speed no moving part 2/spl times/2 fibre optic switch (FOS). Recently, we proposed a simple 2/spl ti... 详细信息

关键词： Liquid crystals optical fiber polarization High speed optical techniques optical switches optical crosstalk optical sensors optical beams optical filters optical fiber devices optical losses

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Computerized device with CCD camera for measurement of surface tension and wetting angle in solid-liquid systems

Computerized device with CCD camera for measurement of surfa...

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IEEE Instrumentation and Measurement Technology conference

作者： D. Sankowski K. Strzecha S. Jezewski J. Senkara W. Lobodzinski Computer Engineering Department Technical University Lodz Poland Welding Department Warsaw University of Technology Warsaw Poland Institute of Ecological Electric Thermal Engineering Warsaw Poland

In this paper, a computerized device with the CCD camera for the automatic determination of important surface properties of liquid and solid in contact is described. This device is based on image processing algorithms. The system is capable of measuring the surface tension (surface energy) of liquid and the wettability of a solid surface in the wide range of temperatures, up to 1800/spl deg/C. The results obtained with this device are far more accurate than those obtained by means of the currently applied, extremely time consuming non-automatic methods and the operator's subjective evaluation.

关键词： Charge coupled devices Charge-coupled image sensors Surface tension Atmospheric measurements Electrical resistance measurement Solids Energy measurement Temperature Control systems optical recording

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