By using ultra-high speed electronic camera system, we studied the discharge characteristics of Xe and Ne for the surface-discharge ac plasma displays.

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A new photosensitive resistor has been developed which features accurate patterning, good uniformity and a low distribution of electrical resistance. A 42-in.-diagonal DC-PDP for HDTV with good uniformity and a wide operational margin has been developed using the new material.

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In order to improve color ac plasma displays, co-evaporated protecting material with MgO and MgF_2 are suggested to suitable protecting layer with transmissive property of ultraviolet rays.

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This paper describes about 42 inch PDP, it's a typical multimedia display. First feature is using CCF (Capsulated Color Filter) technology for improvement of color picture quality. Secondary, the new driving processing is devloped. In addition, its specification is abundant function if it would be conventional TV receiver. Moreover, its thickness is 99mm.

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Desing concept and the architecture of a 42-in. diagonal PDP system for HDTV receiver are described. Many new technologies eliminating the impairments of moving picture are introduced. Other picture qualities concerning resolution, gray-scale reproduction and color aliasing obtained with the experimental set-up are discussed.

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Moving image on AC Plasma Display Panel are often observed undesirable image by subframe method. We try any approach by image processing technique for improving undesirable image. Slow and quick moving image are separated and processed using addition subframe and motion vector.

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This paper presents the new composition of all focused image by using multiple differently focused image. In this paper, we attempt a method of detection of focus and defocus part by using the angles of a vector that is composed of 2×2 pixels.

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A method to estimate viewpoint of a user from the image of singular marker put on the head is proposed. Using the moment features which represents non-local feature of image, such as the gravity center or the breadth, our method estimate viewpoint of a user by three layered neural network. Experimental result shows that our method has good performance.

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This algorithm can reproduce the brush movement from character image by writing brush, using an Electronic Writing Brush Model that the brush tip rotate corresponding to going direction and softness. The reproduction requires complicated searching, but using Genetic Algorithms was possible to find a nearly handwriting.

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[in Japanese]

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This paper describes a method of removal eyelgasses from facial image with eyeglasses. It is difficult to analyse the facial image with eyeglasses because analysis is hindered by effect of eyeglasses. So, first, we extract region of eyeglasses, then replace gray level to around skin gray level for removal eyeglasses. The results can avoid effect of eyeglasses for region segmentation of facial images.

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[in Japanese]

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A method for recognizing facial expressions in which a feature vector is obtained from Fiourier transform coefficients of velocity vector on a face while an expressions is displayed. As the feature vector is computed from the gradient based optical flow algorithm without time-consuming iteration, the method makes a real-time processing possible.

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We use color and shape information for detecting and locating human faces in two-dimensional natural scene images. A color input image is first segmented using prespecified domains of hue and saturation that describe the color of human skin. After theresholding in hue and saturation, we group regions of the binarized image which have been classified as potential face candidates into a small number of clusters of connected pixels. We then implement a shape analysis by calculating moments for each cluster that are translation, scale and in-plane rotation invariant. In order to distinguish faces from distractors, a multilayer perceptron neural network is then used with the invariant moments as the input vector. Supervized learning of the network is implemented with the backpropagation algorithm, at first for frontal views of faces.

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This paper presents a face recognition system using sequence image for human interface and security. We use several images for discrimination process to avoid an influence of facial expression and face direction. Our system is able to make normalized patterns quickly during an operation by fast and accurate extraction method of facial features. Experimental results are shown.

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This paper presents a model-based region extraction method and demonstrates that ITU-TH.263+ with region-based quantization improves picture quality of face area. Our scheme has resulted in improvement of objective quality of face regions in Y-SNR by around 1dB at 9.6kbps, and about 2dB at 16kbps, as compared with H.263+ ONLY.

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Scattered data points based image warping use a coordinate transformation that maps a set of points locations in a source space to another set of points in the warped destination space. In this paper, we propose a new spatial image warping algorithm which uses elastic body spline to generate a warp function that interpolates scattered data points. The spline is based on a physical model for the deformation elastic body. The spline maps can be expressed as the linear combination of an affine transformation and Navier interpolation spline. The proposal algorithm generates a smooth warp that reflects the feature points and prevents the warped image from folding back upon itself. Also, we compare our proposal algorithm with thin plate spline algorithm.

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In a super high definition (SHD) image capturing, there are principle problems in optics and electronics. A demand for sufficient objective depth leads restrictions on a resolution and a signal quantity. A frame rate is another issue for practical SHD image sensors. Some technical directions are proposed and the present status is reviewed.

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This paper describes a basic study for super high definition image acquisition system. Due to the substancial increase of pixel numbers required in the system, theoretical photon noise limit and le resolution limit becomes a major problem. The caluculation results of these limits are examinaed. An experimental 4K x 2K image aquisition system using a pixel offset method is also described.

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Display devices to be applied in Multimedia-Era are required high resolution. The desirable resolution are discussed in the comparison with the conventional paper media and the resolving faculty of human-eye. The technology trends for high rsolution of display devices are also described.

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In this paper, we present some applications of Super High Definition(SHD) image systems for medicine, museum and education area. Some preliminary full-scale experimental result for these applications is also shown. It is possible to use the SHD image system in off line or stand alone system, but it became more available to use the SHD system in some systems connected with B-ISDN system

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[in Japanese]

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Current status of Magneto-Optical disk industry was reviewed on 3.5" MO and MD, which shipping is rapidly in creasing year by year. Future MO technology realizing very high density is reviewed such as Field modulation recording, Magnetic Super Resolution and Magnetic amplifying read out method. MO will achieve 10-20 Gb/in^2 in near future.

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Current status of phase-change optical disk, especially those technologies adopted in DVD-RAM disk are summarized. They are high numerical aperture optics with 650nm laser diode, mark edge recording technology and land/groove recording one. Future technologies for increasing physical recording capacity are also introduced and it is expected that more than 15GB capacity on 120mm disk will come early in the next century.

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Reversible phase change optical recording material with a new quarternary system of Ag-In-Sb-Te, having high sensitivity and high erasability, has been developed. Furthermore, applying the Ag-In-Sb-Te system to rewritable compact dis (CD-ReWritable ; CD-RW), high performance comforming to Orange Book Part III which is the CD-RW standard was achieaved for the first time in the world.

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[in Japanese]

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Rapid progress in high-density recording technology has made disks the preferred recording medium of video signals. Hard disks, in particular, offer high-speed random accessing, enabling interactive video processing, nonlinear editing and other functions not available on VTRs. The hard disk, however, has designed as a storage device suitable for recording computer data, which can't perfectly ensure video continuity. To improve this problem, we have developed a new video hard disk system suitable for recording high quality video programs.

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The following points were verified through experiments of multimedia service over cable television facilities. (1) Verification of personal handyphone system with CATV network, cable telephony system and hight speed internet access system over cable television. (2) Research on trend of use. (3) Evaluation of influence caused by flow-in noises invasion.

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The Kansai Multimedia Services Research Group is conducting an extensive CATV multimedia services trial, which includes high-speed internet access services, local telephone services and community information services.

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[in Japanese]

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Cable Modem Services have just started in the U.S.A. This new services are the most competitive approach compared to any other methods provided by the telephone networks or the satellite networks. This paper describes about the technical background, the cost effect, standardization activities, and the market prediction.

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Virtual reality (VR) in the field of broadcasting is discussed in this paper from the following three points of view. 1) Interaction between a viewer and a broadcasting center through VR, 2) Interaction between a viewer and a TV set through VR, 3) VR applied to a TV program production. First, we give an overview of a virtual studio technique and then discuss interactive TV. We also introduce TVML (TV program Making Language) which is a key technology for future interactive TV.

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Cyberspace is generated in virtual space (as opposed to real space) on a communications network to provide an electronic means of information exchange. In cyberspace, a group of people can get together and communicate with each other, and they can gather information while freely moving about and engaging in a variety of activities and behavior. This paper describes trends of cyberspace and InterSpace concepts as the example.

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We report the technical specifications of a VR system for clinical medicine based on the results of research and the development of a VR system at National Cancer Center Hospital. An analysis of the process of clinical medicine is very important when constructing a medical VR system for clinical use. VR systems for this purpose can be classified into three types. Type A is for the storage and retrieval of medical information. Type B is for the acquisition of medical information and knowledge. Type C is for the expansion of experience through the use of virtual environments, such as a surgical simulation. The use of reflection technology in VR space varies for the three types of systems.

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In this paper, we propose a Virtual Reality (VR) Relax/Refresh system employing phisiological feedback whose purpose is getting rid of stress and ewcovering from mental fatigue on a short time. VR technology is also applied to a horseback riding therapy.

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Referring to Agent and Artificial-Life which attracts a great deal of attention, I want to clarify the definition of 'Living' which I want to create and to explain the architecture in order to realize it.

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[in Japanese]

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Many social activities could be conducted electronically on communication networks. In such a Cyber Society, not only Joining-type communication but also Requesting-type communication, in which a user enjoy services by requesting a delegate or agent, what we call Agent Communications in this paper, will play an important role. This paper discusses new Agent Communication services.

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We have developed a multimodal interface agent that supports information and knowledge sharing and inter-group communication. If a user enters a query in natural language, the agent system retrieves relevant information from its knowledge databases and presents the appropriate answer. The trial installation is currently being evaluated through practical use.

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The on-line home shopping is expected to be one of the application to the electronic commerece. The Consumers need to do shopping efficiently. We developed the conceptual prototype to the "Home Service Agents" that help a consumer to purchase products by on-line home shopping.

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The viewers are daily invaded by a vast amount of information which requires a system with open architecture that is capable to organize them in an adaptive and decentralized manner. Here, we describe a new broadcasting paradigm based on intelligent agents. We also describe technologies to make the agent-based broadcasting feasible such as video indexing, profile management, communication, and multimedia presentation.

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