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Article type: Cover
Pages
Cover1-
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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Article type: Appendix
Pages
1-2
Published: August 27, 2001
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Article type: Index
Pages
3-11
Published: August 27, 2001
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Jun Satsumabayashi, Takamasa Seto, Takashi Komatsu, Takahiro Saito
Article type: Article
Session ID: 1-1
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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As a method for the selective sharpness enhancement method, we present a coupled nonlinear diffusion filter equipped with a reaction term, an adaptive second-order nonlinear smoothing term and adaptive overshooting term. This coupled nonlinear diffusion method utilizes information about local image contents to control both the degree of the second-order smoothing and the magnitude of the overshoot to be added.
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Shinichi SUNAGA, Takashi KOMATSU, Takahiro SAITO
Article type: Article
Session ID: 1-2
Published: August 27, 2001
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This paper reformulate the region-competition time evolution process of the contours of the coherent image regions as the time evolution of the level-set functions having higher dimensions than image regions, and we apply the level-set time evolution to the iterative segmentation of coherent brightness image regions.
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Kentarou YASHIRO, Takashi KOMATSU, Takahiro SAITOU
Article type: Article
Session ID: 1-3
Published: August 27, 2001
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We discuss the adaptive control of the blending coefficient of the blending filter for the repair of blotches in the film material of old movie. We give the theoretical foundations of the blending filters' applicability to the blotch repair by using a statistical model of blotch distortions and by minimizing a statistical cost function of repair errors.
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Takashi KOMATSU, Takahiro SAITO
Article type: Article
Session ID: 1-4
Published: August 27, 2001
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Eatch camera has its own lens distortion. In the case of image registration for the two images taken different cameras, it is necessary to corect its own lens distortion. We mentioned about how to estimate the correction parameters of lens distortion. Furthermore, we introduce this correction method into image registration process of our previously proposed image integration method.
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Suma Noji, Toshimichi Fujii, Masayuki Nakajima
Article type: Article
Session ID: 1-5
Published: August 27, 2001
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This paper presents an efficient method for generating complex motion of linked object such as humans or animals. The authors propose to apply several motion dynamics techniques for generating acrobatic motion that adapt the environment force, gravity or elasticity. This paper shows the possibility of a system development using dynamics simulation.
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Kohei FURUKAWA, Takahiro YONEMURA, Kenichi HIROSE, Sadahiko NAGAE
Article type: Article
Session ID: 1-6
Published: August 27, 2001
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The viewer system with user participation is added to the un-contacting is added to the educational contents dealing with genetic engineering. Thereby observation of an object can be performed from arbitrary angles. As the positions relation is known simply, the system raises understanding of genetic engineering.
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Ryouji Matsumoto, Kazufumi Kaneda, Hideo Yamashita
Article type: Article
Session ID: 1-7
Published: August 27, 2001
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The paper proposes a method for generating a flow animation of water droplets using an image interpolation technique. The proposed method makes it possible to simulate water droplets falling down from a surfaces and to render a number of droplets very quickly using an image interpolation.
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Kyoko Ariyasu, Masaki Hayashi
Article type: Article
Session ID: 1-8
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We have studied a media conversion technique that enables to convert another media contents to defferent media contents. In this paper, we propose an algorithm that creates a TV talk show program from utterance data automatically. This proposal includes determination of talk show camerawork, camera switching, CG personality position, et cetera. Using this algorithm with TVML (TV program Making Language) technique, we can make automatic talk show generating system.
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Takashi FUKAYA, Yuko YAMANOUCHI, Hideki MITSUMINE, Hideo FUJIKAKE
Article type: Article
Session ID: 1-9
Published: August 27, 2001
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In current video productions using the virtual studio, there is no effective way to show the actors the positioning of virtual objects, such as CG characters. We have created and developed a new interface-Invisible Light, a special light which is visible to human sight but invisible to the television camera. In this report, we will discuss the effective use of Invisible Light within the Virtual Studio.
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Masayuki HASHIMOTO, Kenji MATSUO, Atsushi KOIKE, Yasuyuki Nakajima
Article type: Article
Session ID: 2-1
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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This paper evaluates performance of hierarchical structures for data transmission of medical volumetric data with 3D wavelet transform (3D-WT). The PSNR of the reconstructed data at intermediate stage of hierarchical transmission of the proposed scheme is investigated compared with a general 3D-WT with dyadic decomposition. The result indicates that the proposed scheme is superior to the general scheme.
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Akihito Kagotani, Hiroshi Yoshikawa
Article type: Article
Session ID: 2-2
Published: August 27, 2001
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We have reported that viewing angle of the computer-generated hologram can be expanded with lensless Fourier transform hologram. In this report, we extend this method to make the full-parallax computer-generated holographic stereogram. In the experimental result, we obtain full-parallax computer-generated holographic stereogram with 20 degrees of viewing angle and 10 mm x 7.6 mm image size.
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Kunihiko Takano, Takanori Kaneko, Norihiro Minami, Koki Sato
Article type: Article
Session ID: 2-3
Published: August 27, 2001
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Electro-holography is expected ad 3D-TV. It can reconstruct true 3-D image including the focal depth what is very important for natural 3-D image observation. We have been researching for electro-holography using LCD's by white-light-processing. This time we report about characteristics improvement of reconstructed image in the case of white light reconstruction by optimizing technique.
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Norihiro Mninami, Kunihiko Takano, Koki Sato
Article type: Article
Session ID: 2-4
Published: August 27, 2001
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This paper suggest projection method of simple and easy. And it is adapted to suggest calculation method for the hologram. The new projection method is the projection method for one point light source. And we suggest the calculation method for the fresnel hologram which makes reference light a spherical surface. The new optical setup is screen less and lens less.
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Munehisa Izuka, Kunihiro Sato, Masakazu Morimoto, Riichi Nagura
Article type: Article
Session ID: 2-5
Published: August 27, 2001
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Record of a 3D figure using a Moire pattern of interference fringes is proposed for a purpose of dramatic reduction of data for 3D images. Information of 3D images is recorded as a Moire pattern of interference fringes, and a hologram is made up from this pattern. Numerical results about formation of a 3D image are presented.
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Kunihiro Sato, Munehisa Izuka, Masakazu Morimoto, Riichi Nagura
Article type: Article
Session ID: 2-6
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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A new method is proposed to draw up a hologram using a Moire pattern of interference fringes on the base of the local approximation. Numerical calculation is carried out about reconstruction of the wavefront and formation of 3D images to show validity of a hologram made up from a Moire pattern.
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Daiichi KOIDE, Hitoshi YANAGISAWA, Haruki TOKUMARU, Kiyoshi OHISHI, Yo ...
Article type: Article
Session ID: 3-1
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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A high-speed and precise tracking servo system for an optical disk is indispensable for higher data transfer rate and recording density. We adopt a feed-forword controller employing the Zero Phase Error Tracking method for tracking servo system. The experimental results show reduction of the residual tracking error at a high-speed disk rotaion.
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Nobuhiro KINOSHITA, Norihiko ISHII, Naoki SHIMIDZU, Koji KAMIJO, Haruk ...
Article type: Article
Session ID: 3-2
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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An optical disk system with blue-violet laser requires lower noise photo detector than that with red laser. In this report, laser power from disk to detector and noise level at that power are considered. As a result of calculation and measurement of equivalent input noise current density, appropriate feedback resistor values are found, and a low-noise/wideband photo detector is manufactured for trial.
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Taku Hoshizawa, Shigeki Taira, Osamu Kawamae
Article type: Article
Session ID: 3-3
Published: August 27, 2001
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We have developed a new method of improving the performance of error-correcting codes (ECC) for optical discs, in which symbols in each row are interleaved using individual interleaving rules in a product code. It is more effective short burst errors than a conventional product code, without degrading performance for random and long burst errors.
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Yoshihiro OKAMOTO, Satoshi MIKI, Mitsuteru SATO, Hidetoshi SAITO, Hisa ...
Article type: Article
Session ID: 3-4
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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The 3/4MTR coded PRML system for perpendicular magnetic recording using double layered medium is studied. The BER performance is obtained by the experiments using a spin-stand system, and it is compared with that of 16/17 MTR coded PRML system. The results show that the 3/4MTR coded PRML system exhibits a good performance.
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Yoshihiro OKAMOTO, Noriyuki MASUNARI, Hidetoshi SAITO, Hisashi OSAWA
Article type: Article
Session ID: 3-5
Published: August 27, 2001
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The error pattern analysis in PRML channel with jitter like media noise is studied. The method compares the Euclidean distance between actual sequence and error sequence with that of correct sequence. It is clarified that our error pattern analysis can be efficient in the estimation of error pattern at low BERs.
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Shinji Horie, Setsuo Yamamoto, Hiroki Kurisu, Mitsuru Matsuura
Article type: Article
Session ID: 3-6
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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High Bs magnetic head cores composed of ultra thin Ni-Zn-Cu Ferrite layers and Permalloy ribbons were successfully prepared by Spark-Plasma-Sintering (SPS) method. The laminated cores showed high bonding strength, excellent soft-magnetic properties than ferrite itself. The laminated disk core is one of the promising candidates for high performance new magnetic core used card reader magnetic head.
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Kei Hirata, Setsuo Yamamoto, Hiroki Kurisu, Mitsuru Matsuura, Takanori ...
Article type: Article
Session ID: 3-7
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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Co-containing ferrite thin-films media deposited by reactive ECR sputtering was oxidized by ECR oxygen plasma. The perpendicular coercivity and squareness were increased by ECR plasma treatment for only 90 seconds.
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T. Kangawa, S. Yamamoto, K. Hirata, H. Kurisu, M. Matsuura, K. Tamari
Article type: Article
Session ID: 3-8
Published: August 27, 2001
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Recording characteristic of Co containing ferrite thin film media deposited by reactive Electron-Cyclotron-Resonance Sputtering method was investigated using a flying head and a contact sliding head. In contact sliding head scheme, excellent high density characteristic was obtained.
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Takahiro YONEMURA, Kenichi HIROSE, Sadahiko NAGAE
Article type: Article
Session ID: 4-1
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We are studying on the non-contact input system by using CCD camera. We try to ascertain the utility of this system by applying it to the paper craft modeling software. As a result, modeling could be operated by using this software under the non-contact environment.
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Kunihiko ISHIYAMA, Nobuyuki HIRUMA, Takayuki ITOH
Article type: Article
Session ID: 4-2
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We have developed a finger-pointing positional input device for TV operation. The device takes images of a viewer from a triple stereo color camera and detects the viewer's fingertip and face from three-dimensional position and color information. The device then maps the fingertip position to the TV display by using the positions of fingertip and face. The fingertip is detected by subtracting the input image from the background image and taking the closest point in the resulting "human area" to the TV display. The face is detected by extracting a skin color model from the neighborhood of the fingertip and searching for a skin-colored region above the fingertip in the human area.
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Shuichi Ojima, Jun Ikeda
Article type: Article
Session ID: 4-3
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We analyzed the image quality for ink jet printer by numerical simulation. Our simulation was designed to estimate the printed image degraded by fluctuation of ink dot concerned with the nozzle accuracy, mechanical error and unexpected random error. It is shown that fluctuation of nozzle diameter is dominant factor in granularity.
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Shinichi Sakaida, Osamu Mizuno, Nagato Narita, Yoshiaki Shishikui, Mas ...
Article type: Article
Session ID: 4-4
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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This paper describes subjective evaluation results of low bit-rate video coding. The evaluation tests are based on the terms which are derived from the SD (Semantic Difference) and the factor analysis. The obtained data will be helpful to the design of MPEG-4 video encoding system in the digital terrestrial television broadcasting.
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Atsuo Hanazato, Makoto Okui, Fumio Okano
Article type: Article
Session ID: 4-5
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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Watching stereoscopic images with right-left imbalances causes eyestrain and stress for the viewer. This study focuses on the disturbance caused by differences in black or white clip levels between right and left images. In a subjective experiment we examined the detectable threshold and the degree of disturbance when there are differences in these clip levels.
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Hidehiko Sato, Keiji Uchikawa, Hirohiko Kaneko
Article type: Article
Session ID: 4-6
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We measured magnitude of vection with subjective estimation and centroid position variation of the observer as the field size of stimulus increased. It is shown that the magnitude estimation tended to increase with stimulus field size, and that centroid position tended to move in the same direction as the stimulus moved.
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Haruki Mizushina, Keiji Uchikawa
Article type: Article
Session ID: 4-7
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We measured thresholds for detecting stimulus displacement across saccade for various size of visual field. Our results show that thresholds decrease with increase of the visual field size when stimulus shifts in the same direction as saccade. On the contrary, when stimulus shifts in the opposite direction as saccade, thresholds increase with increase of the visual field size.
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Mitsuhiro KAWAGUCHI, Yoshito MEKADA, Miyosi AYAMA, Masao KASUGA
Article type: Article
Session ID: 4-8
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We examined whether the visual and conversation loads as well as color of the target influence on a functional visual filed (FVF) on a moving background that simulates driving through a city road. The results showed that the workload as well as target color affect the size of FVF.
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Shuichi Sugi, Itsuzo Sato, Kenichi Shinotsuka, Satoru Nakamura, Yasuo ...
Article type: Article
Session ID: 5-1
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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Wide dynamic range camera system using new adaptive electronics shutter speed control have been developed. After recognizing each picture contrast, dark image shutter speed, mixing ratio of two pictures and non-linear processing have been adaptively controlled by the picture conditions. As the result of these technologies, wide dynamic range images over 200 times contrast ratio have been usually obtained.
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Y. NOJIRI, T. YAMAGISHI, Y. KOIZUMI, H. TANENO, M. OHASHI
Article type: Article
Session ID: 5-2
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We constructed the all digitized TV program's library system in YOKOHAMA. We set out a questionnaire for general users if TV program retrieval was operated properly in the YOKOHAMA Broadcast Library. As the result, we had good evaluation and knew that how to use depended on purposes for TV program retrieval. The result is reported in this paper.
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Yuichi KOIZUMI, Tetuo YAMAGISHI, Yuji NOJIRI, Hirotsugu TANENO, Masaka ...
Article type: Article
Session ID: 5-3
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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Short Program Information Retrieving System in the Yokohama Broadcast Library is based on Web-computing technology. This paper outlines configuration of this information retrieving system.
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Seiichi IGAWA, Hirotsugu TANENO, Masatoshi UMEDA, Tetsuo YAMAGISHI, Yu ...
Article type: Article
Session ID: 5-4
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We developed the Video On Demand System for the short programs (commercials, news films and other short programs) in the YOKOHAMA Broadcast Library, using TAO's (Telecommunications Advancement Organization of Japan experimental system in January 2001. We report about the storage, distribution and viewing part of the system.
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Toshihiko Misu, Shin'ichi Sakaida, Wentao Zheng, Masahide Naemura ...
Article type: Article
Session ID: 5-5
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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This paper reports an occlusion-resistive tracking method of moving objects based on Kalman filtering. The filters adaptively fuse heterogeneous tracking strategies depending on the reliability of each strategy, and on the occlusion status. Experimental results with a soccer scene validates its robustness and feasibility for an object-based data broadcasting service
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Kenji MATSUO, Masayuki HASHIMOTO, Atsushi KOIKE
Article type: Article
Session ID: 5-6
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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In this paper, we study on coding and transmission for US medical images using Moon JPEG 2000. It is effective in unusual diagnostic imaging to encode using ROI function. There are many other special functions in Motion JPEG 2000, for example scalable quality, scalable resolution, the coding, and so on. They are also effective in transmission of US medical images.
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Koji MIYAHARA, Koichi MAGAI, Kohtaro ASAI, Ryuta SUZUKI
Article type: Article
Session ID: 5-7
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We have developed a prototype of partial image retrieval system. When the system receives a user's search requests, in traverses the MPEG-7 description database and identifies some portions of images, which match user's requests. The current system can treat color, shape, texture and text annotation information out of MPEG-7 descriptors.
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Chao WANG, Kouji KOTANI, Tadahiro OHMI
Article type: Article
Session ID: 5-8
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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In this study, a new high efficient approach for Face Recognition system using Transverse-Line Vector Quantizaton and 1-D Hidden Markov Models is introduced to provide a high recognition accuracy rate, the proposed approach is designed to use global facial features.
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Tomohiro JOUI, Toshiaki FUJII, Tadahiko KIMOTO, Masayuki TANIMOTO
Article type: Article
Session ID: 5-9
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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This paper presents a fast algorithm for filtering of correlation coefficient and a new stereo matching method that can increase precision. We estimate the disparity by applying iterative diffusion to X-Y coordinate. Our experimental results show our method eliminated false matches and increased precision more effectively than the conventional methods.
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Koichi Yahagi, Satoshi Miyaji, Hiroshi Hasegawa, Masao Kasuga, Hideo Y ...
Article type: Article
Session ID: 5-10
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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In this paper, we propose a remote video monitoring system using variable resolution coding, i.e. a sort of digital zooming function, to be applied in remote caring environment. In this system a target division of a monitored scene is chosen by the operation from a remote receiving side and it is encoded and transmitted by "APC" coding (based on MC+DCT Hybrid coding) to reproduce the divisional image in higher resolution.
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R. Iwama, N. Saito, K. Takizawa
Article type: Article
Session ID: 5-11
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We propose two types of video cameras, which extract automatically only oil images. The first type camera consists of two CCDs and passive optical band-pass (BP) filters with different transmission ranges. The second one consists of one CCD and a wavelength-selective filter. The principle of recognition of oil images and analysis of the passive BF filters are described.
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Yasutoshi WATANABE, Shigeyuki SAKAZAWA, Yasuhiro TAKISHIMA, Masahiro W ...
Article type: Article
Session ID: 6-1
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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This paper proposes a method which optimizes throughput by controlling TCP connection numbers in consideration of protocol processing burden under environments where IP packet loss is variable. The result of the experiment shows that the protocol burden can be controlled within a target range and throughput can be improved.
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Satoshi Miyaji, Yasuhiro Takishama, Masahiro Wada
Article type: Article
Session ID: 6-2
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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IMT-2000 networks have become practically available for where rich content such as video is expected. This paper considers video streaming system in a wireless IP environment. In the wireless IP, throughput and latency may be fluctuated, and some error may occur, and the application layer is required to achieve any error resilience. In this paper, we evaluated error resilience tools defined in MPEG-4.
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Shigeyuki Sakazawa, Yasutoshi Watanabe, Yasuhiro Takishima, Masahiro W ...
Article type: Article
Session ID: 6-3
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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Packet losses in a wireless communication environment cause severe throughput variation in a TCP transmission. For a TCP-based video streaming, an adaptive video bitrate control method is proposed, in which a concept of target value of receiving buffer occupancy is introduced. Computer simulation shows that the method can manage the throughput variation and can improve a video quality
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Tatsuya Kurioka, Toshihiro Ito, Yukio Iwahana, Toshihiro Uehara
Article type: Article
Session ID: 6-4
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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We studied network storage technologies between server systems having different type of networks. For realizing efficient program production, we have developed SRM (Session and Resource Manager) and retrieval method using XML schema as its key technologies. Also described are an experimental distributed server system and the results of experiments conducted to test its functions.
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Juni-chi Yokosato, Yoshiaki Kato, Masayuki Koshiji, Masaya Ito
Article type: Article
Session ID: 6-5
Published: August 27, 2001
Released on J-STAGE: May 24, 2017
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A interarrival jitter is very important when MPEG-2 content is delivered on IP network. In this paper, it is described interval jitter of MPEG-2 content delivered using RTP is measured on the Gigabit network (JGN) and the Gigabit network is stable for delivery of MPEG-2 content.
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