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检索条件"任意字段=Conference on Visual Communications and Image Processing 2002"

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A new multiple channel image plane holography realized by multiple-reference beams

A new multiple channel image plane holography realized by mu...

引用

conference on Optical Information processing Technology

作者： Sun, X Qingdao Univ Dept Phys Qingdao 266071 Peoples R China

ISBN: (纸本)0819447188

Based on the multiplicity and redundancy of holographic recording and reconstruction, the paper presents a new kind of multi-channel image-plane holography, which used the method of multiple reference beams in one exposure to record and give the object's information in different field angles simultaneously. The construction principle of dual-reference-beam multiple-image-plane recording with the diffraction wave theory is also presented. As an example, a dual-reference-beam image-plane hologram is given. image plane holography was noted for its colorfulness and low dependence of reconstruction. But the view field of usual image hologram was largely limited. The accessible research in multiple channel holography can only reconstruct object's image in a fixed directional single channel, which limited the visual range and collected object's information in multiple channels at the same time. So it is, very worthful.

关键词： multiple channel image plane holography multiple reference beams multiple channel image plane holography observation view

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Multi-sensor fusion and enhancement using the Retinex image enhancement algorithm

Multi-sensor fusion and enhancement using the Retinex image ...

引用

conference on visual Information processing XI

作者： Rahman, ZU Jobson, DJ Woodell, GA Hines, GD Coll William & Mary Dept Comp Sci Williamsburg VA 23187 USA

ISBN: (纸本)0819444863

A new approach to sensor fusion and enhancement is presented. The retinex image enhancement algorithm is used to jointly enhance and fuse data from long wave infrared, short wave infrared and visible wavelength sensors. This joint optimization results in fused data which contains more information than any of the individual data streams. This is especially true in turbid weather conditions, where the long wave infrared sensor would conventionally be the only source of usable information. However, the retinex algorithm can be used to pull out the details from the other data streams as well, resulting in greater overall information. The fusion uses the multiscale nature of the algorithm to both enhance and weight the contributions of the different data streams forming a single output data stream.

关键词： image enhancement Short wave infrared radiation Long wavelength infrared Infrared imaging image processing Infrared radiation Sensors Visibility image fusion RGB color model

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International conference on Signal processing Proceedings, ICSP

International Conference on Signal Processing Proceedings, I...

引用

6th International conference on Signal processing, ICSP 2002

ISBN: (纸本)0780374886

The proceedings contain 458 papers. The topics discussed include: multiplierless realization of all pole digital filters;fast identification of linear systems in the presence of input and output noises;a novel blind space-time multiuser detector;pre-extracting support vector by adaptive projective algorithm;intelligent antenna arrays for the TD-SCDMA uplink;in-loop deblocking filter for block-based video coding;improved recursive inverse filtering method for blind image kestokation;image segmentation using modified extended fuzzy rules;region-wide automatic visual search and pursuit surveillance system of vehicles and people using networked intelligent cameras;and weighted multiple bit-plane matching, a simple and efficient matching criterion for electronic digital image stabilizer application.

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Adaptive varying window size filtering of color images based on intersection of confidence intervals rule

Adaptive varying window size filtering of color images based...

引用

1st European conference on Colour in Graphics, Imaging and Vision (CGIV 2002)

作者： Katkovnik, V Egiazarian, K Astold, J Kwangju Inst Sci & Technol Dept Mechatron Kwangju South Korea

ISBN: (纸本)0892082399

A class of linear/nonli near filters with varying adaptive window size is studied. After some (optional) color transformation, for each of three color channels the window size of the applied mask-filters is considered as a parameter. The intersection of confidence intervals (ICI) rule is used for selection of the adaptive window size based on the filter's outputs obtained for different window sizes. In parallel five filters with symmetric and four quadrants masks are used. The ICI rule gives the adaptive window sizes for each of these filters and in a point-wise manner for each pixel of the image. This adaptive window size filters are able to suppress the noise efficiently provided that color edges are well preserved. The final filtering output is obtained by combining outputs of the mentioned five partial filters, each with the varying adaptive window sizes. This operation is produced for each color channel. Finally, we convert the estimates of the color image components back to RGB image. Originally, the ICI rule has been proved by theoretical and empirical studies to be efficient for linear and median filters. We show how this ICI rule can be modified and applied for color image filtering. Simulation experiments confirm that the ICI rule used for window size selection of the mean and median filters of the multichannel combined filters is able to significantly improve quality of color image filtering. The performance of the filters is characterized both by the accuracy and human visual perception criteria.

关键词： Color image processing

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CCD instrument of Newton's ring

CCD instrument of Newton's ring

引用

conference on Optical Design and Testing

作者： Ma, L Han, DF Nanchang Univ Basic Courses Dept Nanchang 330029 Peoples R China

ISBN: (纸本)0819447161

CCD micrographic opticalsystem is applied to observing and measuring Newton's rings. The reduction of the resolving power for the micrographs can be compensated by image processing. Contrasting with the JXD-1microscope, on condition that the measuring precision is alike, CCD instrument of Newton's ring has the better observing effect, its visual field is enlarged to 2.5 times, the date can be collected more conveniently and there are no outside disturbs. By setting up the rule, this instrument can be more suited to the demands of the optical experimental teaching for today's university.

关键词： CCD instrument micrographic optical system Newton's ring image processing

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Fast lossless color image compressing method using neural network

Fast lossless color image compressing method using neural ne...

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IEEE Region 10 Technical conference on Computers, communications, Control and Power Engineering

作者： Jia, KB Fang, S Dun, SB Telecommun Advancement Org Japan Waseda Res Ctr Shinjuku Ku Tokyo 1690051 Japan

ISBN: (纸本)0780374908

The technique of lossless image compression plays an important role in image transmission and storage for high quality. At present, both the compression ratio and processing speed should be considered in a real-time multimedia system. In this paper. a novel lossless compression algorithm is researched. A low complexity predictive model is proposed using the correlation of pixels and color components. In the meantime, perceptron in neural network is used to rectify the prediction values adaptively. It makes the prediction residuals smaller and in a small dynamic scope. Also a color space transforms is used and good decorrelation is obtained in our algorithm. Compared to the new standard JPEG-LS, this predictive model reduces its computational complexity. The compared experiment results have shown that our algorithm has noticeable better performance than the traditional algorithms. Moreover, its speed is faster than the JPEG-LS with negligible performance sacrifice.

关键词： lossless compression perception prediction model correlation

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Cellular neural network in image filtration tasks 1

Cellular neural network in image filtration tasks

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1st IEEE International conference on Circuits and Systems for communications

作者： Khryasshyov, VV Sautov, EY Sokolenko, EA Yaroslavl State Univ Yaroslavl Russia

ISBN: (纸本)5742202601

The mathematical model of cellular neural network (CNN) working in discrete time is considered. The possibility of such devices for computation the convolution of two-dimensional digital signal with a given kernel is showed. The algorithm of construction of a difference equation with constant coefficient, which has the solution of a demanded convolution is given. The hardware implementation of this equation is given the structure of CNN. Model of an exponential smoothing filter of two-dimensional digital signal explicitly is considered.

关键词： image processing cellular neural network computation of convolution difference equation noise smoothing

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image processing and coding for an immersive teleconferencing system 4

Image processing and coding for an immersive teleconferencin...

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4th International Symposium on Video/image processing and Multimedia communications

作者： Schäfer, R Heinrich Hertz Inst Nachrichtentech Berlin GmbH D-1000 Berlin Germany

ISBN: (纸本)9537044017

It is generally agreed that video conferencing today is limited in its support of natural human-centered communication. Body postures and subtle movement, gaze direction, room acoustics, and joint object/data interactions are often misrepresented, lacking, or wholly absent within these systems. To obviate these shortcomings, a so-called immersive teleconferencing system is being developed at HHI within the German ITI project and in cooperation with the IST project VIRTUE. Following the principle of a shared table, it subtends a class of teleconferencing systems enabling conferees located in different geographical places to meet around a virtual table, appearing at each station in such a way as to create a convincing impression of presence. This system enables the participants to make use of rich communication modalities as similar as possible to those used in a face-to-face meeting (e.g., gestures, eye contact, realistic images, correct sound direction, etc.). The author presents the following topics: state-of-the-art in video conferencing;the shared table approach;3D image analysis and synthesis;image and disparity coding;architecture of the conference table;conclusions and outlook. © 2002 Croatian Soc. Electronics in Marine-ELMAR.

关键词： Video conferencing

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Reflecting on the organization: Introducing engineers to corporate identity, image, brand, and culture

Reflecting on the organization: Introducing engineers to cor...

引用

IEEE International Professional Communication conference (IPCC 2002)

作者： Ryan, C Univ Alabama Dept English Birmingham AL 35294 USA

ISBN: (纸本)0780375912

Engineers are expected to understand the structure, goals, and values of the organizations for which they work. Only then can they contribute effectively to these organizations through the production of appropriate goods and services as well as routine communications. Based on the work of Hatch and Schultz (2000), the author of this article offers four concepts (identity, image, brand, and culture)for conducting organizational analysis from varied internal and external perspectives and presents composing practices that follow from this analysis. An advertisement for Ford Motor Company is the primary artifact through which the concepts are examined. As students of engineering enter their respective fields, they must be well equipped to provide not only technical knowledge and skills but also effective communication to the organizations they join. Part of this preparation involves teaching students how to analyze (and critique, if necessary) the goals, values, and priorities of the environments in which they will work, since the context of an organization influences document concerns ranging from audience assumptions to visual layout to language use. This paper addresses some of the ways in which students of engineering might be better prepared to enter the profession through increased knowledge of the workplace, as we as how seasoned engineers might be re-introduced to the purposes behind their work for a particular organization.

关键词： engineering communication identity image brand culture

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Distributed feature extraction

Distributed feature extraction

引用

conference on visualization and Data Analysis 2002

作者： Chen, J Kusurkar, Y Silver, D Rutgers State Univ Dept Elect & Comp Engn Piscataway NJ 08855 USA

ISBN: (纸本)0819444057

Time varying simulations are common in many scientific domains to study the evolution of phenomena or features. The data produced in these simulations is massive. Instead of just one dataset of 512(3) or 1024(3) (for regular gridded simulations) there could now be hundreds to thousands of timesteps. For datasets with evolving features, feature analysis and visualization tools are crucial to help interpret all the information. For example, it is usually important to know how many regions are evolving, what are their lifetimes, do they merge with others, how does the volume/mass change, etc. Therefore, feature based approaches, such as feature tracking and feature quantification are needed to follow identified regions over time. In our previous work, we have developed a methodology for analyzing time-varying datasets which tracks 3D amorphous features as they evolve in time. However, the implementation is for single-processor non-adaptive grids and for massive multiresolution datasets this approach needs to be distributed and enhanced. In this paper, we describe extensions to our feature extraction and tracking methodology for distributed AMR simulations. Two different paradigms are described, a "fully distributed" and a "partial-merge" strategy. The benefits and implementations of both are discussed.

关键词： Feature extraction visualization Detection and tracking algorithms Computer simulations image processing algorithms and systems Information visualization visual analytics Data acquisition Data communications Databases

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