Study on the visibility of the Japanese sign language. The development of the evaluation method of dynamic modeling

日本手语的可视性研究

基本信息

批准号：
11650620
负责人：
MURAKAMI Yasuhiro
金额：
$ 2.24万
依托单位：
Sojo University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1999
资助国家：
日本
起止时间：
1999 至 2001
项目状态：
已结题

项目摘要

Japanese sign language is one of the most useful methods of communication between hearing-impaired and hearing people. Sign language is language for hearing-impaired people that relies entirely on vision. As is the case with written language, if sign language is not legible, communicate problems occur and fatigue sets in. Though the importance of the visual clarity of sign language is socially recognized, systematic studies of the problem have not been carried out. Thevisibility of sign language is influenced byvarious visual environmental factors. The purpose of the present study is to elucidate the relationships between the visibility and the visual environmental factors and finally to propose guidelines for sign language visibility.The legibility of the sign language is influenced by thevisual acuity, but thevisibility of the sign language is influenced by the illuminance.The legibility value is high as vertical illuminance becomes higher. And when vertical illuminance become over 100 lx, the tendency is gettingdull. In general the further the seat or the lower the illuminance is, the more illegible the subject evaluated the conditions. The lower the illmuninace is, the more the effect of the distance is. The evaluation at 1000 Ix was not illegible even at 14.1 m point. There is no difference in the visibility between the colors of the background. The parts of the speaker which the subjects pointed out illegiblewere the speaker's aspect and the movement of the lips. This is owing to the fact that the subjects got clues from them in seeing the sign language. The average evaluation for normal people was worse than the hearing-impaired people at the low illuminances. The illuminance in using image equipment in the lecture field is insufficient.It is necessary toexamine illuminance and floodlightingmethod in the case.

日本手语是听障人士与听力正常人士之间最有用的交流方式之一。手语是听障人士的语言，完全依赖视觉。与书面语言一样，如果手语不清晰，就会出现沟通问题并产生疲劳。尽管手语视觉清晰度的重要性已得到社会认可，但尚未对该问题进行系统研究。手语的可视性受到各种视觉环境因素的影响。本研究的目的是阐明可见度与视觉环境因素之间的关系，并最终提出手语可见度的指导方针。手语的易读性受视觉敏锐度的影响，而手语的可见度又受视觉灵敏度的影响。垂直照度越高，清晰度值越高。而当垂直照度超过100 lx时，趋势变得暗淡。一般来说，座位越远或照度越低，受试者评估的条件就越难以辨认。免疫力越低，距离的影响越大。即使在 14.1 m 点，1000 Ix 下的评估也不会难以辨认。背景颜色之间的可见度没有差异。受试者指出说话者难以辨认的部分是说话者的侧面和嘴唇的动作。这是因为受试者通过看到手语从他们那里得到了线索。正常人在低照度下的平均评价比听障者差。讲堂内使用图像设备的照度不足，有必要检查讲堂内的照度和泛光照明方法。