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- 저자 : Koichi Ohtomi (검색결과 2 건)
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Design for Product Sound Quality
Koichi Ohtomi,Rika Hosaka (사)한국CDE학회 2010 한국CAD/CAM학회 국제학술발표 논문집 Vol.2010 No.8
Sounds from electric appliances, such as vacuum cleaners and copiers, cannot be disregarded in the development of quality products. It is not easy to obtain pleasant mechanical sounds, however, when electric appliances are designed according to the conventional trial-and-error method. Toshiba has developed a design methodology to obtain pleasant mechanical sounds and applied it to products. This methodology incorporates two evaluation methods. One is a sensory evaluation method employing the semantic differential (SD) technique, which determines psychological metrics to measure the level of pleasant sound. The other is a physical evaluation method to which Zwicker’s sound quality metrics analysis can be applied, which determines physical metrics to measure the level of pleasant sound. Zwicker’s analysis determines four metrics of sound quality: loudness, sharpness, roughness, and fluctuation strength. Using these four metrics, physical metrics are defined statistically. Finally, pleasant sound is expressed substantially in terms of psychological metrics. Translation from psychological metrics to physical metrics is therefore required.
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A system for three-dimensional gaze fixation analysis using eye tracking glasses
Ryo Takahashi,Hiromasa Suzuki,Jouh Yeong Chew,Yutaka Ohtake,Yukie Nagai,Koichi Ohtomi 한국CDE학회 2018 Journal of computational design and engineering Vol.5 No.4
Eye tracking is a technology that has quickly become a commonplace tool for evaluating package and webpage design. In such design processes, static two-dimensional images are shown on a computer screen while a subject’s gaze where he or she looks is measured via an eye tracking device. The collected gaze fixation data are then visualized and analyzed via gaze plots and heat maps. Such evaluations using two-dimensional images are often too limited to analyze gaze on three-dimensional physical objects such as products because users look at them not from a single point of view but rather from various angles. Therefore in this study we propose methods for collecting gaze fixation data for a three-dimensional model of a given product and visualizing corresponding gaze plots and heat maps also in three dimen-sions. To achieve our goals, we used a wearable eye-tracking device, i.e., eye-tracking glasses. Further, we implemented a prototype system to demonstrate its advantages in comparison with two-dimensional gaze fixation methods.
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