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Toshiaki Ishihara, Kohsei Matsumoto, Toshio Moriya, Fumiko Beniyama
Article type: Article
Session ID: 17-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Masato FUJII, Atuko KASIWAGI, Ichiro MATSUDA, Susumu ITOH
Article type: Article
Session ID: 17-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper proposes a new method for acquiring a 3-D shape of an object. By taking a picture of the object and its surrounding mirrors, the method obtains multi-viewpoint images with texture information at once. Therefore it requires only one camera and can be easily extended to real-time acquisition of 3-D shapes of moving objects.
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Norio NISHIMURA, Nobuhiko MUKAI, Makoto KOSUGI
Article type: Article
Session ID: 17-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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A surgical simulator, one of virtual reality systems, needs realistic and real-time fluid animation. However it is difficult to simulate fluid motions realistically and in realtime because of its complexity and a number of particles considered. To achieve a realistic and real-time fluid animation, we tried to simulate fluid motion by simplifying MPS method.
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Article type: Appendix
Pages
App18-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Masashi Nakagawa, Shinji Shimojo
Article type: Article
Session ID: 18-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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The web based system constructed from general computers facilitates use of the volume data which has high expression of inner structme. To complement a remote rendering result, the system generates multiple images from arbitrary viewpoints by IBR on client side. The system thus achieves interactive visualization at high frame rate.
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Atsushi MATSUMURA, Ryoichi KAWADA, Atsushi KOIKE, Syuichi MATSUMOTO
Article type: Article
Session ID: 18-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Free viewpoint images are regarded as a good applications of next generatien. To synthesize the images, reference images from one viewpoint and their depth maps are often used. However, these materials suffer from degraded output image quality To overcome the problem, authors have proposed the interpoltion mdhod using dynamically updated background buffers. This paper describes software implementation of multi-view VoD system that incorporates the proposed method in real time rendering.
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Kimihiro Tomiyama, Yutaka Orihara, Yuichi Iwadate
Article type: Article
Session ID: 18-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper describes the development of High-Defmition Virtual Puppet System. Virtual Puppet System is a real-time image composition system with the High-Definition camera image and the dynamic 3D object which is generated from multi-viewpoint images. By using an augmented reality technology the dynamic 3D object is rendered, synchronized with the background High-Definition camera images. This system can be applied to a new video production for the sports and educational TV program etc.
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Masanori Kakimoto, Takeshi Haga, Tetsuya Hirata, Yukiteru Mukai
Article type: Article
Session ID: 18-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In this paper, we describe a real-time rendering and composing technique for multi-view glassless stereo 3D display. By using graphics hardware features, we realized the process that runs within a frame and implemented the method into an application independent library. The library can support multiple types of stereo filters.
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Ayako TAKAGI, Kazuki TAIRA, Rieko FUKUSHIMA, Tatsuo SAISHU, Hitoshi KO ...
Article type: Article
Session ID: 18-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In recent years, autostereoscopic displays have been intensively studied. The 3-D displays with many parallax rays perform favorable 3-D characteristics. However, the resolution is restricted by a pitch of the lenticular plate. We propose the method of improving the resolution of 2-D characters on autostereoscopic image displays. By using the cross-talk of parallax rays, the interpolated 2-D images are obtained.
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Kazuki OBANA, Toshimichi OKUMURA, Takumi KANAOKA, Kunihiko TAKANO, Kok ...
Article type: Article
Session ID: 18-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Projection type holography is the techniques that make possible the natural 3D display. We are developing electro-holographic display system using water particle 3D screen and flow controlled device. However, this system wasn't practical. To solve this problem, we made new flow control led device.
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Article type: Appendix
Pages
App19-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Yusuke Oike, Makoto Ikeda, Kunihiro Asada
Article type: Article
Session ID: 19-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We present a high-speed XGA 3-D image sensor based on the light-section method, which has been designed using a high-speed access method with an adaptive threshold circuit and column-parallel time-domain ADCs. The performance has been estimated by post-layout simulations, and some demonstrations are presented by a prototype image sensor.
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Mitsuhito Mase, Masaaki Sasaki, Shoji Kawahito, Yoshiaki Tadokoro
Article type: Article
Session ID: 19-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In this paper, we propose a method to expand a dynamic range using a multiple resolution A/D Converter. The wide dynamic range image sensor synthesizes long-time and multiple short-time exposure signals for high image quality in whole illumination range. A key technique is a high-speed high-resolution column-parallel integration-type A/D converter with multiple slope. Evaluation results of the wide dynamic range image sensor is reported.
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H. Ohtake, T. Hayashida, M. Yamada, K. Kitamura, T. Arai, H. Maruyama, ...
Article type: Article
Session ID: 19-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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An image sensor for image capturing at 1,000,000 fps with 154,560 pixels was designed. The signal output which continued to 1000fps is possible for this sensor. By having the two modes, an Ultra high-speed camera which is easy to use for broadcast is realizable.
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Y. Kutsuma, H. Yaguchi, T. Hamamoto
Article type: Article
Session ID: 19-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have been investigating real-time lane and forward vehicle detection by using a smart image sensor. In this paper, we explain the method of lane and forward vehicle detection, the architecture of the designed smart image sensor on which lane detection circuits are integrated. We also show the simulation results of some experiments.
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Kentarou Masuda, Sousuke Narisawa, Takayuki Hamamoto
Article type: Article
Session ID: 19-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In this paper, we describe a high speed digital smart image sensor on which A/D conversion circuits and digital processing circuits of image compression are integrated. We explain the algorithm of on-sensor compression based on correlation of two consecutive frames. Finally, we show the design of new digital smart sensor.
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Satoshi Yamanaka, Yoshiaki Okuno, Jun Someya
Article type: Article
Session ID: 19-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In image input machinery such as a copier and a seannes high definition and speedup are dcmanded recently. In a Contact Image Sensor, we realize these demands by arranging plural sensor ICs on a straight line and handling it in parallel. In this report we suggest the new method interpolating gap between sensor ICs.
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Masaru Kamiya, Shoji Kawahito
Article type: Article
Session ID: 19-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper presents a method of direct moving image compression of a CMOS image sensor output with on-chip color filter. The filter output is decomposed into R, G, and B components and luminance component is calculated for motion estimation. Motion compensated images are compressed using a method previously reported. This approach is suitable for compact realization of a digital one-chip camera such as used for capsule-type endoscopes. The image compressor can be implemented with less hardware than the MPEG processor. The PSNR as a function of the compression ratio of the proposed method is compared with conventional moving picture compression method.
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Takashi Komatsu, Takahiro Saito
Article type: Article
Session ID: 19-8
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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The Foveon color image sensor has three photo-sensing layers. The spectral sensitivities of the three layers are extremely different from those of the RGB primary color filters. The color signals acquired by the Foveon sensor should be transformed to RGB color signals. For that purpose, we propose a new color transformation method. First, our method recovers the multi-spectral reflectance of each imaged color from its acquired color signals by solving the ill-posed problem with the regularization technique, and then transforms the multi-spectral reflectance to RGB color signals. We evaluate the performance of our method by computer simulations.
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Junko Makita, Shoutarou Moriya, Tetsuya Kuno, Narihiro Matoba, Hiroaki ...
Article type: Article
Session ID: 19-9
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We propose the demosaicing methods based on the changes of colors in a local region. A color signal in a local region of an image is changing from one color to another color in a color space. The results of image simulation showed that the proposed method could reduce the artifact noises at a boundary between the different colors.
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Article type: Appendix
Pages
App20-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Yu Ishida, Daisuke Sakashita, Yasuhiro Tomita, V. A. Gnatyuku, Toru Ao ...
Article type: Article
Session ID: 20-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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512 CdTe radiation detectors with uniform energy resolution were fabricated using excimer laser process. The high-energy radiation imaging device with wavelength discrimination were developed. Result of the examination using the device, the radio isotope image which distinguished energy was clearly obtained. On measurement subject, the about 3% thickness change was also measured.
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Keiji Umetani, Kazuhito Fukushima, Kazuro Sugimura
Article type: Article
Session ID: 20-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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A synchrotron radiation microangiography system with spatial resolution down to 6 μm was developed using a high-speed X-ray shutter system and an X-ray direct-conversion type detector incorporating an X-ray SATICON pickup tube. Microangiographic imaging in isolated perfused rat hearts was carried out to observe small coronary arteries.
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M. Nanba, K. Osada, Y. Takiguchi, K. Miyakawa, T. Watabe, S. Okazaki, ...
Article type: Article
Session ID: 20-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have been developing a new image sensor with a field emitter array (FEA) and a high-gain avalanche rushing amorphous photoconductor (HARP) target, with the aim of using it in ultrahigh-sensitivity, high-resolution compact TV cameras. A256×192 pixel sensor with a pixel size of 50μm×50μm, and its electron-beam focusing system consisting of permanent magnets were fabricated and tested. The experimental results show that the prototype sensor has both enough resolution for its pixel size and high sensitivity due to the HARP target, thus demonstrating its potential as a practical image sensor.
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M. Yamada, H. Ohtake, K. Kitamura, T. Hayashida, T. Arai, H. Maruyama, ...
Article type: Article
Session ID: 20-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have fabricated a video trigger system for an ultra high-speed camera. This prototype system is capable of applying a trigger to the optimal timing for an ultra high-speed camera.
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Y. Ohkawa, K. Miyakawa, T. Matsubara, S. Suzuki, T. Takahata, M. Kubot ...
Article type: Article
Session ID: 20-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have developed a 35-μm-thick New-Super-HARP film that can be used for the red channel of an HDTV color camera. A significant design feature of this film is that the thickness of the LiF-doped layer, which decreases the electric field around the interface area, affects the occurrence of image defects and the photoconversion efficiency. Through our experiments, we determined the most appropriate film thickness and fabricated a HARP film suitable for the red channel. Using this film, we have also developed a highly sensitive HDTV color camera.
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Takashi Tokuda, David C. Ng, Hideki Okamoto, Keiichiro Kagawa, Jun Oht ...
Article type: Article
Session ID: 20-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Image sensors working with pulse modulation measuring scheme are proposed for applications of bioimaging and biosensing. A dynamic range of 120dB and a minimum sensing intensity level of 20nW/cm^2 were obtained. It is also confirmed that 5% of intensity change is detectable at the minimum intensity region.
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Daisuke Mori, Takashi Tokuda, Keiichiro Kagawa, Jun Ohta, Masahiro Nuo ...
Article type: Article
Session ID: 20-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have been developing an image sensor which is capable to detect IR in eye-safe region. In this work, we demonstrate that eye-safe light can be efficiently detected with a sensor structure that consists of metal-bonded Si image sensor chip and Ge subwafer.
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Yuuki Maruyama, Kazuaki Sawada, Hidekuni Takao, Makoto Ishida
Article type: Article
Session ID: 20-8
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Conventionally fluorescent label and an expensive fluorescent scanner are used for DNA analysis. The fluorescent scanner has special light source and band pass filter. Therefore they are relatively large in volume. In this paper, we propose novel fluorescence detection sensor for DNA chip, and we have improved that sensor's γ-value. Proposed sensor is possible to detect will be important analysis micro-tool in μ-TAS field.
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Takeshi Hizawa, Kazuaki Sawada, Hidekuni Takao, Makoto Ishida
Article type: Article
Session ID: 20-9
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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A pH sensor is one of the important sensors in various biosensors, and the various kinds of pH sensor have been developed. In this paper, we present new pH sensor (pH imaging sensor), which is possible to measure two-dimensional (2-D) distribution of various chemical reaction. The proposed pH imaging sensor is able to measure on real time, a lot of unknown chemical phenomena will be cleared.
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Toshihiko Eura, Toshihiko Yamasaki, Kiyoharu Aizawa
Article type: Article
Session ID: 20-10
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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CMOS image sensor has a problem of limited dynamic range. In this paper, we propose a variable time-threshold processing method to widen the dynamic range. Character of variable time-threshold sensors is changeable according to threshold function. The threshold function is optimized.
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S. Aihara, K. Miyakawa, Y. Ohkawa, T. Matsubara, S. Suzuki, T. Takahat ...
Article type: Article
Session ID: 20-11
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Image pickup from organic films using a porphine complex as a photoconductive material by incorporating them into a pickup tube have been demonstrated. The quantum efficiency of the tube was considerably improved by the target with a double-layer structure of hole-transport and electron-transport materials.
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Article type: Appendix
Pages
App21-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Isao Goto, Hideki Tanaka
Article type: Article
Session ID: 21-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We developed a "Multi-language Translation Example Browser" to aid human translation work. This system belongs to the category of translation memory systems. The system can support translation of 18 language pairs. We put the system to trial use for the services of NHK World.
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Akiko YAMASATO, Yuko YAMANOUCHI, Masaki HAYASHI
Article type: Article
Session ID: 21-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Camera setting and camera switching are important tasks in the TV program production. Those tasks are usually done by experienced TV directors. We developed a new camera switching simulation tool focused on music show. It enables a user to simulate the camera setting by simply manipulating the cameras on a CG screen and to watch the camera switching actually going on with CG singers according to the camera switching plan written in text format.
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Shinichi YOSHIMURA, Takao TSUDA, Makoto OKUDA, Kazunori OONISHI, Fumio ...
Article type: Article
Session ID: 21-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Our research on intelligent robot cameras continues with the aim of program production support and greater powers of expression. The robot camera has been programmed with the shooting technique of a professional cameraman and it can shoot images with some of the finesses of a professional cameraman. Our most recent prototype robot camera system can perform more "colorful" shooting while in motion. It has various styles of shooting; it can select the appropriate camera position and do fast-action shots.
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Mitsunori Maeda, Takashi Tsuyuguchi
Article type: Article
Session ID: 21-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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NHK has broadcasted many HDTV programs since 1991 (test broadcasting). Besides BS digital channel, we started terestrial digital broadcasting last December. This situation increased our demand for HDTV productions. Several years ago, HDTV system had the disadvantage in its mobility compared to SDTV systems. But recently, NHK has developed a HDTV digital wireless handheld camera system. The feature of this system is that it is compact and lightweighted. In this paper, we introduce some concrete examples of live coverage, in which this HDTV digital wireless handheld camera system was used.
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Isao Tanaka, Youji Inoue, Shizuo Tokito, Shinichi Saito, Hiroshi Mineg ...
Article type: Article
Session ID: 21-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have fabricated white-light-emittmg organic electroluminescent devices with RGB emitting layers, and have increased the luminance by controlling the emission pattern. The organic electroluminescent devices have been applied to an assistant luminaire for an emcee or a newscaster, demonstrating to be practical forthe broadcasting illumination because of the good color rendering property in addition to the low weight and thin thickness.
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Kazuhiko Sayama, Yoshiaki Shibata, Seiji Kawa, Manabu Hatakenaka, Taka ...
Article type: Article
Session ID: 21-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Shinya Takeuchi, Yutaka Kaneko, Makoto Yamamoto, Masahiro Shibata, Ats ...
Article type: Article
Session ID: 21-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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IT technology and IP network are proceeding rapidly. In this paper, we apply them to program production system in broadcast. We have studied a distributed system in which contents and equipments are distributed and can be used from anywhere. Now we introduce a program production system based on edit description. To implement the system, we examine to use SMPTE standardized UMID and MXF wrapping.
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Tomoyuki Okamura, Eiichi Matsunaga, Yasumasa Nakata, Masataka Goto
Article type: Article
Session ID: 21-8
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Article type: Appendix
Pages
App22-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Masafumi Sugawara, Mitsuho Yamada
Article type: Article
Session ID: 22-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Recently, the spread of multimedia are making possible even an ordinary person to porduce TV Programs. For this background , we propose the TV program production equipment using only one set of General-purpose PC and the serial digital interface cameras. The outline is described here.
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Taihei DAIKOKU, Tomonori KATO, Kiyoyuki DOI, Wataru KAMEYAMA
Article type: Article
Session ID: 22-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Nowadays, digital contents around us are increasing. So it is required to develop the method to extract the keywords from the viewers' inputs information to be used as metadata for further content retrieving by others. In this paper, a keyword extraction method from the TV program viewers is proposed.
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Kazuki Hosono, Akiko Seki, Kiyoyuki Doi, Joji Urano, Satoshi Miyabayas ...
Article type: Article
Session ID: 22-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We propose a content viewing control system with metadata, which provides benefit both for TV content viewers and content creators. This system makes new content viewing methods under the digital broadcasting environment. We introduce some of our detailed studies of this system that are SCI structure, SCI vocabulary, and substitutive pattern.
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Atsushi IMAI, Tohru TAKAGI, Ryuji KOYAMA, Toshio SIMAZU
Article type: Article
Session ID: 22-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper presents a new Internet radio news service using speech rate conversion technology. The feature of this service is that three options of speech rate (rapid-nonnal-slow) can be selected according to their taste. Using this service elderly person may listen slowly, and a busy person or a visual impaired person can listen rapidly, for example. This speech rate conversion service on the Internet will contribute to barrier-free information service.
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Akira FUJII, Yutaka SHIBATA, Tomoyuki KYOYA
Article type: Article
Session ID: 22-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In the terrestrial digital broadcasting, Inter-stationary control data signal, Closed caption data signal, Data broadcasting trigger signal, and the signal such as various ID are made to be multiplexed to the VANC data area of the HDSDI signal, and a switch of the program and other control watch are done. A part of the system that has introduced it so far also has the one that the VANC data area is not passed. This paper describes the report concerning the development of the device that can easily check whether the data of the VANC data area can be passed in a general system.
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Shunji MIYAZAWA, Terunori OGAWA, Seiji YAZAKI
Article type: Article
Session ID: 22-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper describes our development of TS(Transport Stream) monitoring system for terrestrial digital broadcasting. We integrate a variety of functions for check the conformity of broadcasting signal. This system has a user-friendly GUI for master control operation, and fully applied to Japanese terrestrial broadcasting standard(ARIB standard and operational guidelines).
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Tatsuya Nishigaki, Toshihiro Kojima, Tomoyuki Okamura
Article type: Article
Session ID: 22-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Fuji Television Network, Inc. and NTT Communications Corporation have jointly conducted the world's first HDTV uncompressed IP based, multi-rate transmission system test at NAB 2004 using an optical fiber network that connects Las Vegas and Tokyo.
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