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Kazumasa Enami
2004 Volume 58 Issue 5 Pages
604-607
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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Atsushi Ishizu, Katsuro Ohmi, Kenichi Tsuchida, Syunji Nakahara, Yoshi ...
2004 Volume 58 Issue 5 Pages
608-642
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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Masahiro Sata, Tatsuya Kurioka, Yoshifumi Yanagawa, Kenji Fukuda, Nobu ...
2004 Volume 58 Issue 5 Pages
643-654
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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MPEG-2 Related Technologies and Objective Quality Assessment Technologies
Ryoichi Kawada, Sei Naito, Shuichi Matsumoto
2004 Volume 58 Issue 5 Pages
655-661
Published: May 01, 2004
Released on J-STAGE: August 17, 2011
JOURNAL
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Keiji Uchikawa
2004 Volume 58 Issue 5 Pages
662-668
Published: May 01, 2004
Released on J-STAGE: August 17, 2011
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Fumio Matsuda, Hirotada Sasaki, Eiichi Funasaka
2004 Volume 58 Issue 5 Pages
669-673
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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Toshiaki Tokita, Hiroyuki Sugimoto, Yumi Matsuki, Ikuo Katoh, Yasuyuki ...
2004 Volume 58 Issue 5 Pages
684-689
Published: May 01, 2004
Released on J-STAGE: August 17, 2011
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A new resolution-enhancing device has been developed based on a novel structure and a unique principle of operation, which shifts the optical path of projected light from pixel arrays by a half pitch at a fast switching speed. The device has a Vertically Aligned Ferroelectric Liquid Crystal (VA-FLC) layer and Multiple Line-shaped Transparent Electrodes (MLTE) that apply a uniform electric field to the VA-FLC layer. These features provide good optical performance in this optical path shift device and produce excellent projection images.
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Yumi Mori, Ryoji Yoshitake, Kosei Tanahashi, Kiyo Moriguchi, Satoshi T ...
2004 Volume 58 Issue 5 Pages
690-694
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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We fabricated an experimental measuring system for thin-film transistor liquid crystal display (TFT-LCD) screens based on Ergonomic requirements by ISO 13406-2. It consisted of a controller, an automated rotating stage, a charge-coupled-device (CCD) camera, and a pair of light sources. The whole display screen could be evaluated from various viewing angles under the illumination of conditions it is usually used under. The possibility of appropriate measurements of non-uniformity luminance or “mura” based on the sensory analysis was also confirmed.
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Tadashi Hamasaki, Toshiyuki Yoshida
2004 Volume 58 Issue 5 Pages
695-704
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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This paper extends the multivalued watershed algorithm, which has been proposed as a technique to segment, still pictures, into a 3-dimensional algorithm and applies it to the problem of tracking a target in image sequences. The proposed tracking technique first generates a 3-dimensional representation of target frames by arranging them temporally, and then applies the 3-dimensional multivalued watershed algorithm to the representation, with the target object segmented manually on a single selected frame. Further mechanisms, such as global motion compensation, are introduced to improve tracking precision. Experimental results presented later in this paper reveal that the proposed technique can accurately keep tracking target objects. Comparisons with conventional frame-by-frame tracking algorithms also illustrate the superiority of this approach.
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Tomokazu Irie, Tetsuo Tsujioka, Hisayoshi Sugiyama, Masashi Murata
2004 Volume 58 Issue 5 Pages
705-712
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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The demand for high-speed communication has been increasing in recent years. A data compression method that requires limited resources and has high speed is necessary for high-speed data communication. We proposed Logical Triangle Method to fulfil this requirement before this paper, which enables a codeword to be derived on demand by an operator. In this paper, we propose a new method of dynamically selecting the operator to improve its performance. Moreover, we evaluated its performance through simulation, which verified that It could achieve good data compression in bi-level image coding although this is one-dimensional coding. At the same time, we worked on implementing a sample encoder to a PLD and evaluated it on the device. As a result, we confirmed that our method could achieve high-speed coding with a small scale encoder.
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Ken'ichi Morooka, Hiroshi Nagahashi
2004 Volume 58 Issue 5 Pages
713-720
Published: May 01, 2004
Released on J-STAGE: August 17, 2011
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3-D morphing is shape transformation from one object to another. This paper presents a new method of morphing objects with different topologies. The basic idea behind our method is to generate an approximate model of a given object by using a deformable model, called the Active Balloon Model (ABM). Since the data structure for each object is similar to that of the original ABM, it is easy to find correspondence between two models by utilizing ABMs. We also propose a new method of generating intermediate models during morphing. This method uses various kinds of time functions according to the types of topological changes. These time functions enable us to control topological changes arbitrarily.
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Kunio Sakamoto, Rieko Kimura
2004 Volume 58 Issue 5 Pages
721-723
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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A finger pointing system is described that can specify the position of the pointed target. We developed a prototype system using a single camera and a personal computer where the user points at a virtual 3D object floating outside the display. This paper proposes a method of measuring the spatial positions of the eye and finger using a single camera. We evaluated the results on specified positions obtained by the prototype system and ensured performance was adequate for practical use.
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Yuichiro Kume, Dai Hasegawa
2004 Volume 58 Issue 5 Pages
727-730
Published: May 01, 2004
Released on J-STAGE: March 14, 2011
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The sensation of self-motion is elicited by vision, vestibular sensation, and somato-sensation.We psychophysically investigated the sensation of self-motion affected by vertically moving visual and accelerative stimuli, using a PC-controlled elevator and a head-mounted display.We found from the experimental results that the vertical sensation of self-motion is synergically enhanced by vertically moving visual and accelerative stimuli, when moving visual stimuli, eliciting vection, such as landscape images and images with fixation visual targets, are presented.
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