ITE Technical Report
Online ISSN : 2424-1970
Print ISSN : 1342-6893
ISSN-L : 1342-6893
21.48
Showing 1-19 articles out of 19 articles from the selected issue
  • Type: Cover
    Pages Cover1-
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Type: Bibliography
    Pages Misc1-
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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  • Type: Index
    Pages Toc1-
    Published: September 18, 1997
    Released: June 23, 2017
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  • Tetsuya Aikawa
    Type: Article
    Pages 1-5
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    I state a construction of an addition of a function for the blinds to read text files on such as manuals and references by synthesyzing voice, when the blinds use BASIC and MS-DOS of personal computers.
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  • Masakazu Suzuki, Fumikazu Tamari, Koichi Inoue, Ryonosuke Miyazaki, Ay ...
    Type: Article
    Pages 7-14
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper describes a system of OCR, which can handle scientific documents containing mathematical expressions. After the extraction of the lines from a scanned image, we segment each line into Japanese parts and mathematical parts using candidates and their scores produced by character recognition. In the analysis of the structure of the mathematical parts, we apply the top-down recognition algorithm for mathematical expressions. In this algorithm, the normalized sizes of letters and symbols play an important role. Our algorithms works reliably on almost noiseless images. After the image-to-TeX conversion in this way, the braille document is produced with our LaTeX-to-braille translation system.
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  • Hideo MAKINO, Hironobu WATANABE, Ikuo ISHII
    Type: Article
    Pages 15-19
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    To develop a portable location guidance system for the visually impaired for use outdoors, we improved the GPS and mobile telephone based guidance system. The basic system consisted of a user terminal (Mobile station), a location data processor (Base station), and a modem for data exchange. In this paper, a new communication method using DIME (Dual Tone Multi-Frequency) for GPS data transmission was used to reduce the initial communication set-up time before the beginning of speech information. Consequently, the set-up time was reduced from 30 seconds to 10 seconds. Restarting a communication link after a telephone line interruption became easy making it possible to continue sequential speech information corresponding to GPS data. Furthermore, the modem unit was removed.
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  • Hironobu Watanabe, Hideo Makino, Harumasa Hojo, Ikuo Ishii
    Type: Article
    Pages 21-28
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    We developed a wide area GPS-based tracking system for locating wandering elderly persons. Usually, at least three satellite signals are required to determine an exact position using a commercially available GPS system. However, in a downtown area where there are many tall buildings or roadside trees, it is difficult to receive signals from three satellites continuously. In these situations, the pseudo range data from two satellites and the moving characteristics of elderly persons are used to estimate the wandering area. The moving locus was displayed on the CRT of a terminal searching sequentially. Using this system, a family searching for an elderly relative can get the specific search area information through the wide tracking method.
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  • Norihito Ishida, Tomoharu Nagao
    Type: Article
    Pages 29-36
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Previously we proposed the method to approximate unknown image transformation from an original image to its target image by a sequence of several known image filters. We extended this method by adding another filtering sequence and making these sequences simply structured. The extended method can deal with more complex image transformation processes. This paper describes these extensions.
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  • Akira Hara, Tomoharu Nagao
    Type: Article
    Pages 37-44
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Positioning human facial regions in images can be used for various fields such as person identification, counting of humans and so on. In this report, we propose a method to extract facial regions in still gray images in which the directions, positions, sizes, and rotational angles of human faces are unknown. This method is based on pattern matching using facial templates of various directions. To avoid a vast number of matching, we apply a genetic algorithm to this process, and to improve accuracy of extraction, we use differential images of original ones.
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  • Ichiro Kawamura
    Type: Article
    Pages 45-48
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Many people have been making their efforts to develop and industrialize welfare and assistive devices. In spite of their efforts, we still do not have a good enough product-supple system of the devices in Japan. One of the main reasons is that the rate of elderly people in Japan increases so rapidly us no other countries have been done before. We have still many issues to be deeply considered to realize rich society for everybody in every respects. This report deals with : (1) The purpose and significance of Japan Wellness and Welfare Product Industrial Association that was founded in 1996. (2) Certain viewpoints which people who is engaged in either designing and developing the devices should have. (3) Some comparisons between Japan and other countries in producer-consumer relations.
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  • Tsutomu AKIYAMA, Kazutaka MITOBE, Noboru YOSHIMURA, Makoto TAKAHASHI
    Type: Article
    Pages 49-56
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    The purpose of this study is for grasp the sensorimotor peculiarity of aged person which is a presupposition for preventing aged person from traffic accident. 3 conditions, only visual target, auditory stimulation from opposite direction of the visual target and same direction of the target, were used which were the combinations of visual and auditory stimulation. In this paper, young subjects (20 years) and aged subjects (70 years) were measured. The results show that for aged subjects unrecognition was higher than 80% around the peripheral visual field and the reaction to target was slower than 0.1[ms] as compared with young subjects.
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  • Naoyuki KANOU, Takao KAWAMURA, Michio INOUE, KENJI Nakashima, ATSUKO S ...
    Type: Article
    Pages 57-64
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    This paper describes the development of Communication Aid for Amyotrophic Lateral Sclenosis (ALS) patients utilising the Event-Related brain Potential (ERP). ERPs are recorded from the subject during word discrimination tasks. For the visual stimulus of task, the 25 words which are arranged as a 5×5 matrix form are used. Raws and columns of the matrix are repeatedly flashed at randam on a CRT screen for 300[ms] with a period of 500[ms]. The subject focuses attention successively on a word be wishes to communicate. He is ordered to count the word that is the target stimulus. When the raws or columns containing the chosen word are flashed, a P300 is elicited. The P300 components of filtered and averaged ERP waveforms are successfully obtained from the target trials. Results clearly show that the P300 component can be used to detect the attention of the subject without any physical actions and can be used as a human-interface of the Communication Aids.
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  • Norihiro UEMI, Yasunori SUGAI, Yoshinori YAMAGUCHI, Muneo HASHIBA, Jun ...
    Type: Article
    Pages 65-70
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    To improve a naturality of electrolarynx voice, we have proposed a new electrolarynx which can control the intonation of the voice by laryngectomees using their expiration. First, we investigated the intonations of two spoken sentences and the ability of expiration pressure control. Subjects were six laryngectomees who used these electrolarynxes for the first time. From the results, four of the laryngectomees could suitably produce the intonation for each sentences. We found that the pressure-to-pitch transform function was necessary to be modified according to the characteristic of each laryngectomee. Based on the above results, we designed a practical electrolarynx with a pitch control function.
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  • Chikamune WADA, Shuichi INO, Hisakazu SHOJI, Tohru IFUKUBE
    Type: Article
    Pages 71-76
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    We have been studying how to stimulate a fingertip in order to improve our tactile aid for the deaf. In previous study, we have designed new stimulation method that stimuli of consonant or vowel part of speech were presented with vibratory or convex stimulation pattern. In this study, we have proposed the usage of mixture of vibration and convex stimulation pattern in order to diminish tactile fatigue of the fingertip. From the experimental result, the degree of tactile fatigue decreased when stimuli were made by mixture of vibration and convex. Moreover, the consonant identification rate became higher when the duty ratio of vibration was changed. The reason was guessed to be different tactile sensation caused by different duty ratio.
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  • Hidehisa Oku, Osami Wakita, Tomoko Yamamoto
    Type: Article
    Pages 77-83
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Faster selection of KANA letters in a selection table is essential for efficient operation of scanning type of communication aids for the severely physically disabled. Most of commercially available communication aids employ traditional KANA tables for selection. It is clear from previous research that a KANA tables of frequency order, obtained from news papers and other non special documents, decrease the number of steps in operation. In this paper, another frequency orders are obtained from the documents written by the severely physically disabled. it is stated that the new frequency orders will decrease the steps of operation more than the frequency order from the normal documents.
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  • Kazuyuki ITOH, Yasuo SUDOH
    Type: Article
    Pages 85-91
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    As a result of progressively disabling disease, some people with disabilities (e.g. progressive muscular dystrophy, amyotrophic lateral sclerosis, etc.) become hard of operating scanning communication aids. In this case they communicate solely with their eyes, moving them up (or left) as "yes", down (or right) as "no" or blinking as input signals for a scanning communication aids. It is intuitive and efficient, however, eye-gazed character on communication board (or item on menu board) is selected directly. In this report, we analyzed eye movement with visual feedback during gazing desired characters on communication board and described prototype of eye gaze communication system. 6 non-disabled subjects tried to operate this system and they could pick up their name and some greetings only by eye gazing.
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  • Satoshi Koyama
    Type: Article
    Pages 93-98
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    Raw-column scanning method is widely used in comminication aids for the severely motor disabled. It is desired to reduce switch activations for input letters. In this paper, raw-column scanning with variable starting position which minimizes average switch activations per letter is stated, then it's performance is evaluated in comparison with other raw-column scanning or coding-based methods.
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  • Yoshinori ARIFUKU, Tatsuro IMAOKA, Seiji KITAKAZE
    Type: Article
    Pages 99-106
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
    A new input-output equipment to computer system was developed which gives an impetus to use of information-transmission equipment for disabled persons. We produced a key-input system and experimented on the movements of key-input for disabled persons, and analyzed the character of key-input behavior for each kind person of obstacle. The result is as follows. With trials to adjust the time-parameter which controls the key-input, we confirmed the validity to assign the time-parameter according to individual disabled persons, and set the time-parameter to control key-input, and report on the 「Decision-format」.
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  • Type: Appendix
    Pages App1-
    Published: September 18, 1997
    Released: June 23, 2017
    CONFERENCE PROCEEDINGS FREE ACCESS
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