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Article type: Cover
1990 Volume 14 Issue 31 Pages
Cover1-
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Article type: Index
1990 Volume 14 Issue 31 Pages
Toc1-
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Shigeki Harada, Heiju Uchiike, Yoshifumi Fukushima
Article type: Article
1990 Volume 14 Issue 31 Pages
1-6
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Akihiko Kohgami, Shigeo Mikoshiba
Article type: Article
1990 Volume 14 Issue 31 Pages
7-14
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Kazushi Miyake, Heiju Uchlike, Yoshifumi Fukushima
Article type: Article
1990 Volume 14 Issue 31 Pages
15-20
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Satoshi Nakagawa, Hoichiro kashiwabara
Article type: Article
1990 Volume 14 Issue 31 Pages
21-26
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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A prototype of self emission type full color TV was developed aiming at 100" size indoor display. The prototype consists of red and green LEDs and blue lightsource of high brightness fluorescent lamp which is controlled by ferro-electric liquid crystal shutter and distributed to the display surface by optical fibers. The paper describes the concept and results of the development.
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Kenji KINOSHITA
Article type: Article
1990 Volume 14 Issue 31 Pages
27-34
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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A holographic stereogram synthesis system was experimentally produced. This system uses a transmission type liquid crystal display as a light modulator. The holographic stereogram synthesized with this system is a laser light reconstruction type. A sheet of exposed hologram film contains 180 kinds of pictures generated by the ray tracing technique. The sizes of used films are about 70mm×300 mm. It is possible to make one holographic stereogram within 50 minutes. This time does not include picture generation time by the ray tracing technique. A reconstructed picture can be observed clearly in a bright room. when a 5mW He-Ne laser is used.
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Osamu HAGA, Heiji OKADA
Article type: Article
1990 Volume 14 Issue 31 Pages
35-40
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Satoru YAMADA, Naohiro WATANABE, Takehito SEKIGUCHI, Shunji SAKAI
Article type: Article
1990 Volume 14 Issue 31 Pages
41-46
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Katsuhiro OKUDA, Hiroyoshi KOMOBUCHI, Hiroshi AKAHORI, Takao ANDOU
Article type: Article
1990 Volume 14 Issue 31 Pages
47-52
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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The possibility is investigated of an avalanche amplifying solid-state imager. A special designed 5-pixels Si avalanche photo-diode(APD) array operated under a charge storage mode is built. In below-breakdown operation,photo-electric conversion characteristic is devided into two regions. The slope of the curves γ in these regions is corresponding to γ=1 and 0.5,respectively. Increasing reverse bias applied to the APD, the nonlinear conversion region equivalent to γ=0.5 become dominant and be practically independent on an inherent gain of the APD. These properties are due to self-quenching of the gain. It is found that the variation of the responsivity of the array caused from the inherent gain nonuniformity is drastically decreased and approaches to the level roughly equal to a half of the pixel capasitance uniformity. The reduction of the variation is more successful for the array having smaller pixel capasitance. The fact is important for applying the APD to an imaging sensor. It is concluded that the array could be applicable over a wide field from extremly low-light level imaging to normal video camera use.
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Mitsuo NAKAI, Seiichi SHINOHARA, Makoto KATAYAMA, Yen-Uei CHIN, Noriak ...
Article type: Article
1990 Volume 14 Issue 31 Pages
53-57
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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A computed tomographic technique has been developed to diagnose laser-irradiated shperical targets using x-ray emission. The three-dimensional x-ray distribution was reconstructed by using an algebraic reconstruction technique (ART) from x-ray pinhole camera images obtained along different sight directions. 3-D distributions of electron temperature and relative density were measured by use of an absorption filter technique with x-ray fluorescent screens.
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N MIYANAGA, M UNEMOTO, Y.-W CHEN, M YAMANAKA, S NAKAI, T IIDA, T IGUCH ...
Article type: Article
1990 Volume 14 Issue 31 Pages
59-66
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Hiroki YOSHIDA, Tsuyoshi OSADA, Yukio SAKAGAMI
Article type: Article
1990 Volume 14 Issue 31 Pages
67-74
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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Hiroshi Hashegawa, Yashuhiro Nashu, Eiji Shimizu
Article type: Article
1990 Volume 14 Issue 31 Pages
75-82
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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In the face image processing,it is important to extract the outlines of the element in the face such as eyes,mouth and so on. Our faces are uneven, so there are the edge components of these elements and background noises in the face images. Moreover, these elements have their own responses to the filter. These are the reasons why the face image processing is so diffult. Taking these points into considerations,we proposed the outline extraction using milti-resolut ion image processing wholly and locally. But the outlines obtained in this method have broken parts, projections and the segments combined with neighboring components. In this paper,we tried to process the outlines by substituting these extracted characteristics points for the nodes of SNAKES.
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Article type: Appendix
1990 Volume 14 Issue 31 Pages
App1-
Published: June 22, 1990
Released on J-STAGE: October 06, 2017
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