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Ichiro Yuyama
2000 Volume 54 Issue 3 Pages
324-327
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Atsushi Yokoyama, Yoko Miwa, Takayuki Yoshigahara, Kazuyoshi Hayashi, ...
2000 Volume 54 Issue 3 Pages
328-331
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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2D-to-3D Image Conversion Technology
Haruhiko Murata
2000 Volume 54 Issue 3 Pages
332-337
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Naokazu Yokoya
2000 Volume 54 Issue 3 Pages
338-342
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Recent Topics on Stereoscopic Displays without Eyeglasses
Susumu Matsumura
2000 Volume 54 Issue 3 Pages
343-346
Published: March 20, 2000
Released on J-STAGE: August 17, 2011
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Hideya Takahashi, Eiji Shimizu
2000 Volume 54 Issue 3 Pages
347-350
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Koichi Emura, Takanori Seno
2000 Volume 54 Issue 3 Pages
351-355
Published: March 20, 2000
Released on J-STAGE: August 17, 2011
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Objective Picture Quality Assessment Technique for Digitally Coded Video
Eisuke Nakasu
2000 Volume 54 Issue 3 Pages
357-363
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Kunio Sakamoto, Kazuki Saruta, Kazutoki Takeda
2000 Volume 54 Issue 3 Pages
388-393
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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A 3-D head mounted display (HMD) system is useful for constructing a virtual space. We have developed a 3-D HMD system. Traditional displays have drawbacks in that the lightness of real and virtual images is insufficient for spatial viewing. This problem can be solved by using the simultaneous perception of the human vision and a 3-D vision system. We also describe a newly developed monocular stereoscopic 3-D display system for a 3-D HMD system.
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Ken-ichi Tanaka
2000 Volume 54 Issue 3 Pages
394-401
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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A computer-generated hologram (CGH) is made for three-dimensional image reconstruction of a virtual object. The error diffusion method is used to improve the reconstructed image. The selection of the diffusion coefficient affects the image quality of the reconstructed image. We optimized the diffusion coefficient using a genetic algorithm (GA). In this simulation, the diffusion coefficient found by the GA could reduce the mean squared error of the reconstructed image by 40% compared with stochastic searching.
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Hiromichi Fujii, Kenichi Kobori, Yoshikazu Nishikawa
2000 Volume 54 Issue 3 Pages
402-408
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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In a virtual-space walk-through system, collisions between three-dimensional objects should be detected in real time. Generally, such collision detection is done by using the intersections of the surfaces of the objects. When the objects become complex, however, collision detection in real time is difficult because of its heavy calculation cost. Therefore, collision detection is done by approximating each object as a group of spheres. To improve the approximation, the spheres must be made smaller, but doing so makes collision detection in real time more difficult. To solve this problem, we have developed a fast collision-detection method that reduces the number of spheres. Experimental results showed that it is faster than conventional methods.
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Satoshi Yonemoto, Daisaku Arita, Rin-ichiro Taniguchi
2000 Volume 54 Issue 3 Pages
409-416
Published: March 20, 2000
Released on J-STAGE: August 17, 2011
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A realtime marker-less motion-capture system is described that can easily and seamlessly map objects in the real world into a virtual environment. In general, virtual environment applications, such as man-machine seamless interaction, require the system to estimate the motion parameters for natural objects such as human bodies in realtime.To achieve this, the developed motion-capture system achieves multiple-camera fusion and reconstructs the parameters for complete human-body motion using real-time inverse kinematics. Implementation of this system demonstrated its ability to work in realtime and online on a pc-cluster.
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Tetsuya Kitagawa, Koji Yamasaki, Hideya Takahashi, Kazuo Shigeta, Eiji ...
2000 Volume 54 Issue 3 Pages
417-419
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Susumu Nakajima, Ken Masamune, Ichiro Sakuma, Takeyoshi Dohi
2000 Volume 54 Issue 3 Pages
420-425
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Kazuya Kodama, Akira Kubota, Kiyoharu Aizawa, Mitsutoshi Hatori
2000 Volume 54 Issue 3 Pages
426-430
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Kunio Yamada, Tadashi Ichikawa, Takeshi Naemura, Kiyoharu Aizawa, Taka ...
2000 Volume 54 Issue 3 Pages
431-434
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Tadashi Ichikawa, Tetsuya Yoshimura, Kunio Yamada, Toshifumi Kanamaru, ...
2000 Volume 54 Issue 3 Pages
435-439
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Hideki Mitsumine, Yuko Yamanouchi, Seiki Inoue
2000 Volume 54 Issue 3 Pages
440-443
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Masaru Kanazawa, Ichiro Yuyama
2000 Volume 54 Issue 3 Pages
444-451
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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The effectiveness of using a PLUGE (picture line-up generating equipment) signal to improve a display's grayscale reproduction under ambient illumination was investigated using two new metrics. Experimental results showed that adjusting a display's brightness with a PLUGE signal enables more precise adjustment than with a general image. A metric for the volume of reproducible color space was used to describe the area that a display can reproduce in the color space. A metric for the color reproduction reduction rate was used to describe how gray-scale reproduction deteriorates under ambient illumination. The values obtained for these metrics showed that adjusting the brightness with a PLUGE signal improves grayscale reproduction.
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Koichi Hamada, Toshihiro Yamamoto, Taiichiro Kurita, Yoshimichi Takano ...
2000 Volume 54 Issue 3 Pages
452-458
Published: March 20, 2000
Released on J-STAGE: August 17, 2011
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We have developed a field-sequential stereoscopic display system with a 42-inch diagonal HDTV DC-type plasma display panel (PDP). This system uses an LCD shutter stereoscopic eyeglass, synchronized with the L and R pictures on the display by infrared signals. A 12 sub-field light-emission scheme for stereoscopic display and a signal-processing method for improving gray-scale expression in stereoscopic display are described. Stereoscopic images were displayed on the PDP by the proposed emission scheme. The effectiveness of the signal-processing method was confirmed by subjective evaluation.
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Arata Miyauchi, Kouji Sasadai, Tsuyufumi Watanabe, Tomoo Isikawa
2000 Volume 54 Issue 3 Pages
459-462
Published: March 20, 2000
Released on J-STAGE: March 14, 2011
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Wenjie Chen, Noriyoshi Okamoto, Shinichi Nishida, Toshi Minami
2000 Volume 54 Issue 3 Pages
463-466
Published: March 20, 2000
Released on J-STAGE: August 17, 2011
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