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Hiroshi Okuda, Junichi Takad, Yasuo Iwasaki, Noritsuna Hashimoto, Chie ...
Article type: Article
Pages
95-96
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Akitoshi Ika, Eiichi Miyazaki, Yasutada Sakamoto
Article type: Article
Pages
97-98
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A flat CRT utilises three lines heater cathode, three vertical focus & deflection electrodes, an array of stripe-form modulation electrodes, and a phosphor screen, was developed.
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Kouki Iseki, Atsushi Takahashi, Yasutada Sakamoto, Eiichi Miyazaki
Article type: Article
Pages
99-100
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper reports the results of experiment for focusing characteristics of anode electric field to both spot sizes and cut-off voltages in simple construction flat CRT.
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Atsushi Takahashi, Kouki Iseki, Yasutada Sakamoto, Eiichi Miyazaki
Article type: Article
Pages
101-102
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper reports the results of experiment for our simple construction flat CRT's deflection characteristics, in relation to anode electric field.
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Ulasjuk V, Katsap V
Article type: Article
Pages
103-104
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The introduction of projection graphic displays of super high resolution (more than 1200x1200 pixels) is potentially difficult as the conventional projection CRTs combined with projection optics have limited perspective. The run outside the limit is available if conventional projection CRTs are substituted by the devices of new generation-laser CRTs or quantoscopes.
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Masahiro Honjo, Masaaki Kobayashi
Article type: Article
Pages
105-106
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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It is found that the relation among the modulation index of FM signal, CN ratio and a tearing phenomena in the single side band wave FM demodulation. A demodulation system for preventing the tearing phenomena has been developed.
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Kazumasa Ikeda, Shouichi Imakake
Article type: Article
Pages
107-108
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Dynamic aperture control system is studied to improve picture quality of a high-saturation TV signal. To use maximum circuit makes a compensating circuit simple.
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Yoshihiro MORIOKA
Article type: Article
Pages
109-110
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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In the study of increasing the recording density, it is imporant to analyze the signal and noise in the head-amp system. In this paper, a theoretical analysis is described.
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Ikuo Ohkuma, Kenji Tsunashima, Yoshiyuki Sasaki, Toshifumi Fujii, Mich ...
Article type: Article
Pages
111-112
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A new method has been developed to compensate for inter-channel difference of multi-channel VTR. The picture quality of the HD-VTR was improved with this method.
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Kazuharu Niimura, Tetsuo Nagoya, Akihiro Iida, Hidenari Ikeda, Shigeo ...
Article type: Article
Pages
113-114
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A High Definition VCR using 1/2-inch tape has been developed. High quality pictures are obtained by using a precise non-linear emphasis system, a newly developed time-base corrector and an automatic equalizer.
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H. ITOH, M. HIROKOH, T. OoHATA, M. HASEGAWA, T. FUJII
Article type: Article
Pages
115-116
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Ken Ohnishi, Yoshiko Hatano, Yoshinori Asamura, Kohtaro Asai, Hirofumi ...
Article type: Article
Pages
117-118
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have studied the subband and three dimensional DCT coding for home use digital VTR. The 4 : 2 : 2 component TV signals were compressed to 25Mbps rate singals keeping high quality images.
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H. Nishikawa, K. Asai, T. Murakami, Y. Hatano, Y. Asamura, K. Ohnishi
Article type: Article
Pages
119-120
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper describes a study on video coding scheme for home use digital VTR. A hybrid scheme of three-dimensional subband technique and two-dimensional DCT is studied.
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Mitsuo Shiozaki, Haruo Ohta, Masaaki Kobayashi
Article type: Article
Pages
121-122
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The influence of corsstalk interference from adjacent tracks in digital video recording is estimated. The effect of azimuth recording, the differences of some channel codes and equalizations are discussed.
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YOshiyuki Urakawa
Article type: Article
Pages
123-124
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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I optimized the parameters of the equalizer for digital magnetic recording, and found the nonlinear distortion is rather severe than we expected. We need to study how to cansel it for higher densily.
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Hiroaki Shimazaki, Etsuto Nakatsu, Haruo Ohta, Masaaki Kobayashi
Article type: Article
Pages
125-126
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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An experimental study of carrier/clock recovery for multilevel Quadrature Amplitude Modulated signal which is recorded and reproduced on magnetic recording medium is described.
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Masato Nagasawa, Eiji Yokoyama, Kihei Ido, Yoshinobu Ishida
Article type: Article
Pages
127-128
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Performance of the tracking servo system for digital VTR was improved by the newly developed phase sensing pilot method. To suppress mechanical resonance, tracking system using observer was also developed.
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Eiji Yokoyama, Masato Nagasawa, Kazuo Mori, Yoshinobu Ishida, Yoshihik ...
Article type: Article
Pages
129-130
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Noiseless high speed search for home use digital VTR was developed by moving tape path pin, together with high precision tracking and tension servo control.
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Toshiyasu Mori, Kenji Shimoda, Jun Shindoh, Teruo Itami
Article type: Article
Pages
131-132
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have developed a VHS VCR with a dynamic tracking system which can trace a track curved more than 10μm, using softwear servo microcomputers.
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Daiichiro Kato, Hitoshi Uanagisawa, Takuji Sekiguchi, Toshihiko Okina
Article type: Article
Pages
133-134
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper propose a new tape path system which has no mechanical readjustment. Using the air suction guide post, tape fluctuation is suppressed about half.
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Hitoshi Yanagisawa, Daiichiro Kato, Takuji Sekiguchi, Masato Gomyou, M ...
Article type: Article
Pages
135-136
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Tape fluctuation causes tape edge damage by flanges of posts and/or reels. Controlling the reel disk position vertically, tape fluctuation is suppressed less than 30μm.
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Tamotsu MITSUYASU, Takuji SEKIGUCHI
Article type: Article
Pages
137-138
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This paper propose a new tape path system which has no mechanical readjustment. Using the Inclining guide post, the tape fluctuation is suppressed less than 5μm.
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Naoto Yumiki, Kenji Matsuura, Eiichi Nagaoka, Fuminari Saito, Masaaki ...
Article type: Article
Pages
139-140
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have established a tape displacement measuring method and propose a method to realize stable tape flying chracteristic that doesn't influence the contact between a tape and a video-head.
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C. Koshio, T. Ikeya, N. Ito, T. Kitajima, S. Nomura, M. Ohta
Article type: Article
Pages
141-142
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Hi-Vision MUSE discs with EFM signal have been developed by using a high density recording machine, The maximum playback time is 120 minutes for both sides.
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T. Ikeya, C. Koshio, N. Ito, T. Kitajima, S. Nomura, M. Ohta
Article type: Article
Pages
143-144
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A master disc recording machine able to record with higher density than that of the Laser Disc Format has been developed.
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Hitoshi Kanamaru, Yoshiyuki Tsukai, Satoshi Sugiura
Article type: Article
Pages
145-146
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A new small optical pickup for LASERDISC system has been developed. This paper describes a theoretical analysis of the pickup optics and experimental results.
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Hitoshi Kanamaru, Fumitaka Kotaka, Satoshi Kusano
Article type: Article
Pages
147-148
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A new small optical pickup for LASERDISC system has been developed. This paper describes electrical signal processing of this pickup.
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Hitoshi Kanamaru, Fumitaka Kotaka, Yoshitugu Araki
Article type: Article
Pages
149-150
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A new small optical pickup for LASERDISC system has been developed. This paper describes its structure and performance.
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Hideki Hayashi, Susume Nomura, Takashi Sakakibara, Hitoshi Kanamaru
Article type: Article
Pages
151-152
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have developed a video disc system which reproduces the MUSE signal on a replicated disc for 60 minutes per side. The CD format audio signal can be recorded additionally.
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Takao Sawabe, Ryuichi Todoroki, Yasuhira Kishino, Hitoshi Kanamaru
Article type: Article
Pages
153-154
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A practical MUSE optical video disc player has been developed. The time base control is based on the MUSE sync signals, and so the internal memory can offer various playing functions.
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Kan Ebisawa, Toshiyuki Kashiwagi, Hitoshi Okada, Hiroo Takahashi
Article type: Article
Pages
155-156
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The high definition video disc system was developed using a laser-diode-pumped intracavity-frequency-doubled Nd : YAG laser. Good picture-quality playback of 90minites per side was obtained with a 300mm-diameter disc.
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Sumitaka Matsumura, Yoshiaki Moriyama, Kaoru Yamamoto
Article type: Article
Pages
157-158
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A new ROM_type digital optical disk system using the current Laser Disk mass production process has been developed. As an application of this disk, we have developed HDTV Digital Still Picture Filing System.
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Kenji Asano, Toshiaki Hioki, Yoshihiko Morita, Hiroshi Watanabe
Article type: Article
Pages
159-160
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We have developed a HDTV 3D system which can present effective stereoscopic images. It consists of two MUSE video disc players and a 6-tube type projector.
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Satoshi Kawasaki
Article type: Article
Pages
161-162
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A particular jitter noise exists in frequency-modulated Hi-Fi Audio system of VCRs. The developed system extracts the noise by taking the periodical average of sound and reduces the noise by cancelling.
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Seiichi Mikami
Article type: Article
Pages
163-164
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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An inverted white peak prevention circuit for S-VHS, consisting of the adoption of a limiter and delay equalizer circuit within the negative feedback circuit was developed.
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Kiyofumi Yamashita, Kyouichi Shinoda, Hiroyoshi Mori
Article type: Article
Pages
165-166
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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SAW modulator is used in VTR modulator. This modulator consists of a SAW resonator and a bipolar IC, housed together in a hermetically-sealed metal package, so it has high performance.
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Sigeo Majima, Takaharu Saeki
Article type: Article
Pages
167-168
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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New swicthing noise reduction circuit for HiFi VCR has been developed, which compensates error signals by adding pulses of the same power with opposite polarity.
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Takuya Ohtsuki, Shigeru Ogata, Masao Tomita, Hiromu Niwa
Article type: Article
Pages
169-170
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A newly developed television standards converter for home use VTR is described. It can overcome the defference in woredwide broadcasting standards (five standards) and promote international communications.
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J. Someya, N. Banba, K. Watabu, K. Chiba, N. Satou, S. Nakamura, R. Wa ...
Article type: Article
Pages
171-172
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A digital signal processing method on color video printer CP-10 is presented. Using this processing method, high quality prints are obtained within 70 seconds at low cost.
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Hirokazu YAMANOUE, Makoto TADENUMA, Ichiro YUYAMA
Article type: Article
Pages
173-174
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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In binocular three-dimensional television we discussed pick up method and impression on sizes and depth of subjects by varying camera angle and distance between left and right camera.
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Toshihiro SHIMIZU, Sumio YANO, Tetsuo MITSUHASHI
Article type: Article
Pages
175-176
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We studied on the objective measurement method of wide-field effects for both the 3D-image and the 2D-image by analysis of the subjects' center of gravity.
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Satoshi Shioiri, Takao Sato
Article type: Article
Pages
177-178
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Conflictive depth cues from shading was shown to prolong the latency to percieve depth from binocular disparity. This was true even when there was no effect from vergence eye movements.
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Takeo Ugai, Yutaka Endoh, Shin Hasegawa
Article type: Article
Pages
179-180
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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A concept of Line Spread Function (LSF) in depth was defined. The binocular parallax depth sensitivity of the human eye was measured using a field sequential stereoscopic TV system to derive LSF in depth.
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Kenichi suzuki, Sumio yano
Article type: Article
Pages
181-182
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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This report is described about the measurement of binocular fusion charracteriscs for a moving random dot stereogram, which disparity modurates in a sinusoidal spatial way.
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Nobuyuki HIRUMA, Yutaka Hirata
Article type: Article
Pages
183-184
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The accommodation responses of the subjects viewing targets which change periodically were measured. The responses were most stable when the targets changed in a period of one to two seconds.
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Kenji HIWATASHI
Article type: Article
Pages
185-186
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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The human eye movement for smoothly moving objects has generally two components-saccadic and smooth pursuit movements. But very large individual difference was found in ratio of these two components.
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Mitsuho YAMADA
Article type: Article
Pages
187-188
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Movements of the eye and head work interdependently in the human visual system. A new method is developed that analyzes the line-of-sight displacement caused by head movement in excess of that caused by conventional eye movement.
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Sadayuki HONGO, Toshio INUI, Mitsuo KAWATO
Article type: Article
Pages
189-190
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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Some properties of the Craik-O'Brien illusion is simulated with the 2-coupled MRF model which is proposed by Inui et al. based on the "Computational theory of the visual cortical areas".
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Toshio Nakagawa, Sei Miyake
Article type: Article
Pages
191-192
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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We investigated a mechanism of feature extraction using multi-resolution image representation. As the first step, an image generation method with Gabor filtering is proposed. Experimental result shows its effectiveness to a future image recognition system.
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Seiichiro HANGAI, Toru WADA, Kazuhiro MIYAUCHI
Article type: Article
Pages
193-194
Published: July 25, 1990
Released on J-STAGE: October 02, 2017
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