著者

菅 文美 丹下 明子 石川 浩樹 浦口 真喜 大平 英樹

出版者

Japan Society of Kansei Engineering

雑誌

日本感性工学会論文誌 (ISSN:18845258)

巻号頁・発行日

pp.TJSKE-D-16-00092, (Released:2017-03-21)

参考文献数

15

---

When infants are in their crawling stage, both mothers and infants experience difficulties while changing diapers. We evaluated the effects of pull-up type diaper on physical and psychological burden in comparison to the nappy-type diaper. Twenty-four mother-infant dyads participated in this study. According to the behavioral observation analysis, negative behaviors of mothers and infants while changing pull-up type diapers were significantly lesser than while changing the nappy-type. Pull-up type diapers took mothers 30% lesser time to change, while allowing infants more physical movements than the nappy-type. A spectral analysis of infants' heart rate variability showed that low-high frequency ratio and the change in normalized unit percentage (Nu%) were significantly lower when pull-up type diapers were changed. Negative emotion-related behaviors of both mothers and infants significantly correlated with change in Nu% of infants. Lower physical and psychological burden while changing diapers was associated with pull-up type diapers.

著者

小林 宏 鈴木 星子 高橋 久憲 丹下 明 菊池 耕生

出版者

一般社団法人日本機械学会

雑誌

日本機械学會論文集. C編 (ISSN:03875024)

巻号頁・発行日

vol.66, no.648, pp.2778-2783, 2000-08-25

被引用文献数

4

---

This paper deals with the method in order to realize automatic contour extraction of facial organs such as eyebrows, eyes and a mouth for the time-wise deformed frontal face. Because Snakes which is one of the most famous method to extract contour, has several issues, we propose a new method to overcome these issues. We define the elastic contour model in order to hold the contour shape and then determine the elastic energy acquired by the amount of modification of the elastic contour model. Also we utilize the image energy obtained by brightness differences of the control points on the elastic contour model. Applying the dynamic programming method, we determine the contour position where the total value of the elastic energy and the image energy becomes minimum. By using 1/30s time-wise frontal face image, we renew the elastic contour model and then realized automatic contour extraction for the time-wise deformed face. Employing facial images in terms of 6 typical facial expressions obtained from 20 subjects, we have estimate our method and find the high accuracy automatic contour extraction in terms of eyes, eyebrows and a mouth.