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Sei NAITO, Arei KOBAYASHI, Koichi TAKAGI, Atsushi KOIKE, Shuichi MATSU ...
Article type: Article
Session ID: 5-11
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In digital terrestrial broadcasting, integrated Internet and broadcasting services can be provided for the personal mobile user terminal including a cellular phone. As an typical example of the integrated service, DTV contents can be distributed via internet on user demands. In this paper, personal mobile service is assumed as a terrestrial DTV service profile, and a DTV stream distribution mechanism over the internet is introduced and evaluated.
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Article type: Appendix
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App6-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Shigeyuki Sakazawa, Satoshi Miyaji, Koichi Takagi, Yasuhiro Takishima, ...
Article type: Article
Session ID: 6-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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One of promising applications for IPv6 network is a video monitoring and distribution system, since each terminal will have fixed and global IP addresses and can be reached from any terminal on the network. In this paper, several access scenarios are introduced considering the migration phase from IPv4 to IPv6. The terminal configurations and protocol stacks are also proposed to enable the access scenarios. The system is tested on the real IPv6 networks including mobile networks and shown the system works as designed..
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Osamu Sugimoto, Ryoichi Kawada, Atsushi Koike, Shuichi Matsumoto
Article type: Article
Session ID: 6-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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A method of automatic quality monitoring for IP-based broadcasting service using invisible marker method is proposed. By embedding a low level, imperceptible test signal into broadcasting contents, highly accurate video quality estimation is possible. The proposed system is implemented to Linux PC. Picture quality degradation caused by packet loss can be detected as well as coding degradation.
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Shin Hikino, Masahiro Abukawa, Hitoshi Nawa, Hitoshi Yomogida
Article type: Article
Session ID: 6-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper describes a packet filtering method for network transmission of JPEG pictures, which filters a JPEG picture per frame and processes it at high speed by analyzing the packet header of the divided JPEG picture.
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Tsukasa ISEDA, Kenji MATSUO, Masayuki HASHIMOTO, Atsushi KOIKE
Article type: Article
Session ID: 6-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We considered where a picture was useful at medical information exchanging and We propose medical information support system developed by us. It can be used efficiently, a picture is referred to and reported by lightweight and small PDA.
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Yusuke TAKIGUCHI, Yasuhiro HESAKA, Hikaru KATO, Haruo ISONO
Article type: Article
Session ID: 6-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In order to diagnose whether or not it makes the highly Public websites in Japan easy to utilize for the elderly people and the handicapped person, This paper reports concerning the result of inspecting the fitness of the guideline of W3C/WAI making use of the web accessibility inspection tool of the general affairs ministry in Japan.
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Article type: Appendix
Pages
App7-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Masaki HAYASHI, Mamoru DOKE, Narichika HAMAGUCHI
Article type: Article
Session ID: 7-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have been studying customizable TV called TV4U (TV for You) that allows a user to enjoy tailor-made TV programs in an interactive way. In the TV4U, all the TV programs are made at the user site using CG and synthesized voice and so on. To enhance our concept, we propose a new TV system based on PCs and network. With this system, any individual can make TV programs in a very easy way and release them by just one click, and then any individual is able to watch those TV programs freely stored on the network server.
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Narichika HAMAGUCHI, Mamoru DOKE, Masaki HAYASHI
Article type: Article
Session ID: 7-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have been studying TV4U which first divides TV program into resource, content and presentation part, and then distributes the parts themselves and composes them again at a user site. We propose the total TV system which allows end users to produce, to publish, and to watch TV program in easy way. In this paper, we describe the production system called 'TV creator' which enables a user to produce TV programs easily by making documents using standard word processor.
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Mamoru DOKE, Narichika HAMAGUCHI, Masaki HAYASHI
Article type: Article
Session ID: 7-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Over the past year, we have proposed and developed a customizable TV system called "TV4U (TV for You). The TV4U system automatically provides tailor-made TV programs based on user profiles. For satisfying each of individual user's requirements, however, a large amount of TV programs has to be provided. This time, we propose the new TV environment based on TV4U concept which covers TV program production, distribution and watching. In this paper, we especially focus on TV watching system called "TV Browser", and describe the mechanism and the function.
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M. Takahashi, T. Misu, K. Odawara, K. Misumi, S. Gohshi, T. Nishizawa, ...
Article type: Article
Session ID: 7-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Using objects extraction and tracking technologies, we have a developed vision-based ball trajectory visualization system. We call the system 'B-Motion (Ball: Moving Object Trajectory from Image-based Observation and Numerics)". The system can render real-time CG of ball traces. We have applied the system on live baseball broadcast programs and softball ones.
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Toshihiko Misu, Masaki Takahashi, Seiichi Gohshi, Yoshihiro Fujita
Article type: Article
Session ID: 7-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In this paper, we propose a complement filter for vision-based ball trajectory visualization system. Switching the inter/extrapolation functions, the filter adaptively fills the gaps of tempo-spatial data of the ball path taking account of the temporal arrangement of the input sequence.
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Toshio Modegi
Article type: Article
Session ID: 7-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper describes an automatic creation technique of background music track data for given video file. Our proposed system is based on a novel BGM synthesizer. By developing a video analyzer, an appropriate BGM signal selected from total 3125 synthesized patterns can be automatically added to the audio track.
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Shoei Sato, Kazuo Onoe, Akio Kobayashi, Toru Imai
Article type: Article
Session ID: 7-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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NHK has been subtitling broadcast news using speech recognition since March 2000. The speech recognizer processes male and female anchors separately, but crosstalk between the two degrades the recognition accuracy. This paper proposes a method to detect such crosstalk and pass only the desired utterances to the recognizer.
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Youhei SUGAWARA, Kenichi NAMATAME, Mie SATO, Toshiaki SUGIHARA, Masao ...
Article type: Article
Session ID: 7-8
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper examines image-contents friendly to the elderly for their visual and auditory senses. In our experiment, focusing on the sound of the image-contents, we rectify the frequency characteristic of the sound and slow down the speed of speech. Results of the experiment are analyzed using a pair comparison method.
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Masanori Sano, Ichiro Yamada, Kyoko Ariyasu, Hideki Sumiyoshi, Masahir ...
Article type: Article
Session ID: 7-9
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Development of a metadata editor as one of the tools we can use to make metadata for TV programs was reported. This metadata editor can provide a method of handling individual technologies to extract information from video, audio, text, etc. equally.
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Fumihiko Fujiki
Article type: Article
Session ID: 7-10
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We built apractical imagedatabase by MPEG7. We select TV commercial as an imagematerial. Make a scene selection, performed Annotation for every scene. We also built fundamental search engine. In Annotation, the suitable expressing method. such as restricting the layer edstructure of the objected escription, was examined.
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Article type: Appendix
Pages
App8-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Masamitsu Harasawa, Ikuko Tsubaki, Hiroaki Shigemasu, Naoyuki Matsuzak ...
Article type: Article
Session ID: 8-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We examined effects of temporal frequency of pitch oscillation of characters in reading on visually-induced sickness. Elevation of SSQ score and reading time were measured. The frequency that induced the largest elevation in SSQ was different from that of vestibular stimulation. Difficulty of reading induced only smaller sickness.
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Naoyuki Matsuzaki, Ikuko Tsubaki, Masamitsu Harasawa, Hiroaki Shigemas ...
Article type: Article
Session ID: 8-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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The participants wearing HMD searched the specified character in random dots and other characters by moving video camera by themselves. They could see a part of dots and characters and what they saw was recorded. When they saw the recorded movie later, they felt worth than before. This suggests that unexpected motion in later induced severer motion sickness.
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Ikuko Tsubaki, Naoyuki Matsuzaki, Hiroaki Shigemasu, Masamitsu Harasaw ...
Article type: Article
Session ID: 8-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Motion sickness is sometimes generated by watching videos with handheld camera shooting. We analyzed power spectrum of global motion for such videos in the time frequency domain. Motion sickness was examined using the Simulator Sickness Questionnaire (SSQ).
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Hiroaki Shigemasu, Masamitsu Harasawa, Naoyuki Matsuzaki, Ikuko Tsubak ...
Article type: Article
Session ID: 8-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We investigated whether the symptom of visually induced motion sickness changed depending on display sizes with identical visual angles. Our results indicated that a larger display size made the symptom of visually induced motion sickness severer with larger field of view, while a smaller display size made them severer with smaller field of view
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Mitsuyoshi Saito, Mitsuho Yamada
Article type: Article
Session ID: 8-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We are interested in the sport player's visual characteristics. For this purpose, we developed experiment equipment, which analyze a subject's eye movement while his/her viewing moving patterns. We did the preliminary experiment. Its result is described here.
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Yuuya Takasu, Mitsuho Yamada
Article type: Article
Session ID: 8-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In diagnosis ofAlzheimer's disease, the subject that makes a patient copy a figure is often used. In order to perform it more simply, we propose a system that can analyze a subject's eye movement and his/her locus of a pen while copying figures. This system also can be used in a general psychological experiment.
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Ryota SHINOJIMA, Takeshi KOHAMA, Yoshimi KAMIYAMA
Article type: Article
Session ID: 8-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Moving gratings which are invisible under fixation can be detected by executing saccades. We investigated the intrasaccadic visual processing by using an early visual system model which simulates retina-V1 projection. Our results show that contrast sensitivity of simulated V1 neurons was increased by executing sacades, indicating that intrasaccadic perception might occur on the early stage of visual processing.
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Shoji OSHIGIRI, Junichi KONNO, Mie SATO, Hiroshi HASEGAWA, Miyoshi AYA ...
Article type: Article
Session ID: 8-8
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We examine a driver's functional visual field during driving in curved and straight zones. The results show that the functional visual field in the curved zone is narrower than that in the straight zone.
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Article type: Appendix
Pages
App9-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Y. Yoshida, K. Ishikawa, T. Inoue, K. Komine, Y. Sawahata, N. Uratani
Article type: Article
Session ID: 9-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In an effort to achieve a man-machine interface for digital broadcasting receiver that is universally user-friendly, we made the prototype of a new interface using less-button remote controller and GUI, which can operate all functions by consistent techinque. In this paper, we describe design guidelines of this new interface, and report the summary of it.
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Masao FUJIWARA, Tadashi ISOBE, Hiroyuki KANETA, Toshiya MORITA, Noriyo ...
Article type: Article
Session ID: 9-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have developed an experimental TV navigation system to assist viewers in selecting appropriate TV programs for digital broadcasting channels. This report describes several new results of evaluation tests, using four typical remote control Pointing Tools to find out TV program easily for the renewal TV navigation system. Also we proposed a new remote control tool combined with gyro-sensor device for the system.
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Tsuyoshi Hanamura, Masahiro Ichikawa, Eriko Fukuyama, Keiji Ohta, Asak ...
Article type: Article
Session ID: 9-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This research aims to establish a scalable conversion method of video contents according to the video contents or the display capacity of the receiving terminal. We examined the three crop (cut) methods when converting HD videos to QVGA and SQVGA size. The appropriate crop methods for display size were discussed from the results of the user evaluation experiments
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Takayuki HAYASHI, Daiji KOBAYASHI, Sakae YAMAMOTO
Article type: Article
Session ID: 9-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Web Pages' design on 3 Web sites was evaluated based on user's behavior at Web browsing. Participants completed tasks of searching for information on the Web site and their eye movement, verbal protocol, search time were measured. Eye movement patterns reflected the features of Web Pages' design.
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Article type: Appendix
Pages
App10-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Takeshi Murashige, Hideo Fujikake, Hiroto Sato, Hiroshi Kikuchi, Taich ...
Article type: Article
Session ID: 10-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Light diffraction of aligned polymer fibers was investigated, which were formed by a phase separation of a liquid crystal and polymer mixture in an anisotropic phase. It was confirmed that the light diffraction pattern of He-Ne laser beam due to the polymer fibers depended on anisotropy and periodicity of the dispersed polymer fibers. The angles of the first order diffraction peak were corresponding to values calculated with the periodidty of the formed polymer fibers. This method using the light diffraction is useful for quantitative evaluation of the polymer fibers.
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[in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
Article type: Article
Session ID: 10-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We studied liquid crystal alignment induced by micropolymer filaments. The polymer filaments are extracted from a nonwoven cloth by extending and exfoliating it. The formed filaments were sandwiched between glass substrates, and then the nematic liquid crystal was filled in the gap between the substrates. The liquid crystal director orients along the filaments. The two-dimensional arrangement of filaments enables spatial alignment control of liquid crystal in a device plane.
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H. Sato, H. Fujikake, T. Murashige, H. Kikuchi, T. Kurita
Article type: Article
Session ID: 10-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We developed a fabrication process of a large-size flexible display device containing monostable ferroelectric liquid crystal(FLC) with aligned polymer walls and networks. Finely patterned color filters and ITO electrodes were formed on a plastic substrate by transfer method. An FLC/monomer solution film was then coated on the plastic substrate by flexographic printing technique. After lamination with another substrate was performed, the polymer structures were formed by the FLC by two-step UV irradiation. A fabricated A4-sized device with color pixels presented images even when the device was bent.
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Y. Fujisaki, Y. Inoue, H. Sato, H. Fujikake, S. Tokito, T. Kurita
Article type: Article
Session ID: 10-4
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We fabricated an organic TFT (OTFT)-driven 5×5 polymer-dispersed liquid crystal(PDLC) display cells on a flexible plastic substrate. The OTFT showed the carrier mobility of 0.4cm^2/Vs and the ON/OFF ratio of 10^5. We optimized the fabrication process of the cells, and confirmed reflective display operation of the cell with a low driving voltage of 12-15 Volts.
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H. Kikuchi, H. Yamamoto, H. Sato, M. Kawakita, K. Takizawa, H. Fujikak ...
Article type: Article
Session ID: 10-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We have studied the molecular alignment of polymer-walls through polarized Raman spectral microscopy. These walls were founed in liquid crystal by local photopolymerization-induced phase separation under an electric field. We found that without any applied voltage the side-chain molecules of the polymer-walls oriented in the rubbing direction of alignment layers coated on the substrate, but with applied voltage the molecules oriented along the electric field. Novel three-dimensional alignment technology realized by using the interfaces of both the polymer-walls and alignment layers could stabilize the bend configuration in the π-cell.
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Toshiyuki Higano, Takahiro Ishinabe, Tatsuo Uchida
Article type: Article
Session ID: 10-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In order to realize excellent liquid crystal displays (LCDs), designing of optical compensation film is important. Conventionally, retardation film is designed by using normal retardation Δnd and a parameter to define oblique angle property such as Nz or Rth. However, we found both Nz and Rth are unsuitable to design accurate viewing angle property. Then, we propose a new parameter Tz to design the viewing angle property of LCDs strictly.
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Sou OKADA, Sinji KOGUCHI, Satoru KUBOTA
Article type: Article
Session ID: 10-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Using a digital camera with a fisheye lens, we measured incident light at surface of a mobile display in 112 different environments including outdoor, indoor, and in-car. These data were analyzed to depict the some typical environments in which the mobile displays were used. These results would be used to evaluate the legibility of reflective or transflective LCDs and to establish the method for measuring reflection property of mobile displays.
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Article type: Appendix
Pages
App11-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Nobutaka SUZUKI, Madoka HASEGAWA, Shigeo KATO
Article type: Article
Session ID: 11-1
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In this paper, we propose a scalable transmission method based on the concept of Schalkwijk code for dithered image. Shalkwijk code consists of the prefix code and the pattern code. Receivers are able to understand the outline of the image contents by only receiving the prefix code.
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Nau OZAKI, Ichiro MATSUDA, Susumu ITOH
Article type: Article
Session ID: 11-2
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We previously proposed a novel lossless coding scheme for still images. In this scheme, a set of linear prediction functions are optimized for a given image and an appropriate one is selected block-by-block. To obtain better trade-off between the amount of coding bits for prediction errors and that for side-information, this paper introduces a method for designing a suitable number of the prediction functions.
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Masayuki HASHIMOTO, Kenji MATSUO, Atsushi KOIKE, Hiroki HAYASHI, Tetsu ...
Article type: Article
Session ID: 11-3
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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This paper proposes a novel CT image coding concept named LOI which stands for Level of Interest and coding methods based on that concept. The well-known ROI (Region of Interest) coding gives priority to pixels in particular regions of an image when encoding or decoding the image. Similarly, LOI coding gives priority to the pixels having particular pixel levels. It offers remarkably high coding efficiency for significant pixels in a CT image.
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Tetsuro KUGE, Shuichi KANEKO, Hitoshi SHIMAMOTO, Takayuki FUJIEDA, Wat ...
Article type: Article
Session ID: 11-5
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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The next-generation picture coding standard, the JPEG2000, has rich features of high-compression efficiency and scalable handling of images, and so is expected to be used not only for still pictures, but also for compressing video with high quality. We have constructed a prototype codec of JPEG2000 with compact PC extension card size and applied it to HDTV motion picture recording following the Motion-JPEG2000 format. The codec compresses the HDTV signals in an intra-field manner using the core technology of IR 9x7 Wavelet conversion of the JPEG2000 Part-1 Standard, processing a single tile per field. The codec consists of a single PC extension board attached to a PCI 64-bit bus. This paper outlines the architecture of the codec and its coding performance by the experiment.
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Satoshi SAKAMOTO, Tadahiko KIMOTO
Article type: Article
Session ID: 11-6
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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Digital watermark can be hidden in bit planes of an image. This paper proposes a modified method of adjusting a pixel value with an inverted bit. The computer simulation showed that the proposed scheme reduces change of a pixel value even when a high-order bit is inverted, and retains image quality.
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Minoru Wada, Jinichiro Takata, Kiyoyuki Doi, Hiroshi Tsutsumi, Seiichi ...
Article type: Article
Session ID: 11-7
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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We conducted the image distribution experiment as live programs which used the Internet. After embedding of digital watermarking on real time on the images, we coded and distributed them. Embedded digital watermarking was detectable from 99% or more of the whole frames.
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Eiji MORITA, Mitsugu KAKUTA, Takashi NOGAMI
Article type: Article
Session ID: 11-8
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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A network meeting is spreading with development of network technology as a real-time communication means while checking each other expression with a picture or voice. About H.323, which is one of the specifications of that, much correspondence software and Hard already have. Moreover, a network meeting is possible by using a multi-point connection function. This paper describes embedding meta-information into such an image. The image itself can be used as the minutes by performing the authentic proof using the information decoded from the stegoimage.
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Susumu SHIRAYAMA, Kentaro MURAYAMA
Article type: Article
Session ID: 11-9
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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In visualization information, there is a problem concerning reproducibility. For instance, the figures obtained from visualizations, published in the past documents cannot be easily reproduced. In this paper, additional informations to the visualized image consists of annotation etc. are discussed from the standpoint of the information diffusion. We will propose several methods to preserve and conserve the visualized image.
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Article type: Appendix
Pages
App12-
Published: August 02, 2004
Released on J-STAGE: May 24, 2017
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