著者

白濵 成希 松本 圭司 森谷 健二 合志 和洋 渡邉 志

出版者

バイオメディカル・ファジィ・システム学会

雑誌

バイオメディカル・ファジィ・システム学会大会講演論文集 32 (ISSN:13451510)

巻号頁・発行日

pp.A2-1, 2019-11-23 (Released:2021-02-01)

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We have been researching subjective evaluation experiments using Visual Analog Scale (VAS). VAS has the advantage of expressing subjectivity more intuitively. In this paper, we report an attempt of the subjective evaluation related to human lightness sense as fundamental research on what kind of color sense human has. We used VAS to obtain answers on where each gray image with different lightness corresponds to on the grayscale. Numeric values obtained by this evaluation experiment were analyzed to confirm the characteristics of the sensitivity of the individual. Moreover, at the same time, it was examined whether the VAS accurately reflected the subjective view of the person by the answer of what percentage of the grayscale was by the numeric value input. In order to conduct experiments smoothly, we developed an app that can perform VAS measurement and numeric value input simultaneously. We presented ten grayscale images to 13 subjects and obtained subjective measurements using this app. It was confirmed that when the lightness of the grayscale image is high, it can be recognized relatively accurately, but when the lightness is low, it tends to feel darker.

著者

長谷川 亮 森谷 健二 喜多 幸次 柳谷 俊一 山田 一雅 小川 陸郎

出版者

函館工業高等専門学校

雑誌

函館工業高等専門学校紀要 (ISSN:02865491)

巻号頁・発行日

vol.37, pp.19-24, 2003

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Since 2000, we have attempted to improve a method of leading and experimental theme in the fundamentals of electrical and electronic engineering laboratory I accompanying with a reorganization from dept. of electrical eng. to dept. of electrical and electronic Eng.. In the second-year class, instructions of how to write a technical report were also included into contents of the electrical and electronic experiment. In the present report, we investigated such a method of leading, the experimental system and other problems based on previous enquetes. As a result, it was judging that current experimental system: members of groups, volume of contents, were adequate for students. Additionally, the instruction of technical report was meaningful for the students and we could confirm the necessity of continuing the efforts. On the other hand, some problems: 1) student's preparations to experiments are not sufficient 2) students frequently depend on teacher's advices 3) teachers are not enough to explain evaluation system to students 4) whether experimental themes are really proper or not, were revealed. These examinations and improvements should be needed continuously in the future.