ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
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22.32
Displaying 1-9 of 9 articles from this issue
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  • [title in Japanese]
    Article type: Cover
    Pages Cover1-
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_Cover1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • [title in Japanese]
    Article type: Index
    Pages Toc1-
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_Toc1
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Suppression of half-occluded region of stereoscopic images
    Masaki Emoto, Tetsuo Mitsuhashi
    Article type: Article
    Pages 1-6
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_1
    CONFERENCE PROCEEDINGS FREE ACCESS
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    We have studied that the difference between the perceptions of edge sharpness of horizontal and vertical three dimensional edge is caused by the alternation of dominant eye. In order to detect a suppression of half-occluded region caused by the alternation, we assessed the detectability d' of a monocular small gray dot target presented on a half-occluded region of stereoscopic background images by comparison with that on a two-dimensional region. As a result, we found that the contrast threshold of the target on the half-occluded region was higher than that on the two-dimensional region. This elevation of contrast threshold indicates that local interocular suppression of the half-occluded region occurs more frequently than that of the two-dimensional region.
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  • Influence of mental and physical stressors on pupillary dilatation and noise
    Yukihiro NOMURA, Kiyoshi HOSHINO
    Article type: Article
    Pages 7-11
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_7
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The purpose of this study is to discuss the difference of pupillary dilatation and noise under mental and physical stressors. The time-series data obtained were investigated in the frequency domain and trend. The experimental results showed that static pupillary dilatation had an influence on noise. We propose models for pupillary dilatation and noise under stressful conditions, using CR oscillator where the frequency of noise varies according to stressor's level.
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  • Contingency of nasal breathing
    Akihito ISHIKAWA, Shisei TOMA, Kiyoshi HOSHINO
    Article type: Article
    Pages 13-18
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_13
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The purpose of this study is to identify a major factor of ambiguity of nasal cycle from the viewpoint of contingency of each breathing. The waveform of nasal breathing measured with thermistors was converted to time-series data of the breathing volume, and multivariate autoregressive model was adopted to the shift. The experimental data showed that both of nasal breathings drifted according to a similar pattern in the morning and at night, while each side behaved independently in the daytime. These results suggested that the nasal cycle easily changes due to disturbances although each side has similar pattern of output.
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  • Multivariate analysis of Kachaasii as free style dance
    Shihoko KAMISATO, Kiyoshi HOSHINO
    Article type: Article
    Pages 19-23
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_19
    CONFERENCE PROCEEDINGS FREE ACCESS
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    The purpose of this study was to examine the correlation between subjective impressions and physical motions of shoulder, elbow and wrist in Kachaasii dance. The subjective impression was estimated with semantic differential technique, and the physical motions ware investigated with multivariate autoregressive model. The time-series data of positions and angles of three joints were calculated according to the deforming conditions and shielding directions of the ring lights. The results of cumulative power contribution and impulse response showed that mutual interaction of joint rotations produced high scores in subjective evaluation.
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  • Character Recognition by Feature Selection Method
    Satoru ODO, Kiyoshi HOSHINO
    Article type: Article
    Pages 25-30
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_25
    CONFERENCE PROCEEDINGS FREE ACCESS
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    This study proposes a new method for character recognition which automatically selects key features in Japanese characters. Our new system adopted genetic algorithms (GA) for feature selection, while experts' experience and knowledge have been used in the previous studies for feature selection, due to lack of effective methods and huge space to search. The algorithm was adapted to ETL-8b database and the effectiveness was evaluated. Score of 91.0(%) was obtained for recognition, which supported that the dimensions of character feature can be effectively reduced by GA.
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  • Surveillance and position detection using omnidirectional image sensors
    Ryutarou Miki, Kazumasa Yamazawa, Haruo Takemura, Naokazu Yokoya
    Article type: Article
    Pages 31-36
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_31
    CONFERENCE PROCEEDINGS FREE ACCESS
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    Recently the importance of remote surveillance is increasing in a number of fields such as tele-operation, security guard and so on. Conventional surveillance systems that use a single CCD camera suffers from the narrow field of view. On the other hand, the surveillance systems based on a rotating camera cannot watches the whole environment at once. This paper presents a surveillance and position detection system using omnidirectional image sensors. This system can watch the whole environment and thus can detect the position of an intruder in any direction.
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  • [title in Japanese]
    Article type: Appendix
    Pages App1-
    Published: June 18, 1998
    Released on J-STAGE: June 23, 2017
    DOIhttps://doi.org/10.11485/itetr.22.32.0_App1
    CONFERENCE PROCEEDINGS FREE ACCESS
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