Acta Medica Okayama 1 1998 Consideration of conditions required for multi-channel simultaneous bioimpedance measurement 231 234 EN Yoshitake Yamamoto Takao Nakamura Toshimasa Kusuhara Mr. Adli Impedance techniques have been widely applied to the biomedical engineering field. In order to obtain definite results from bioimpedance, multi-channel measurement is effective. A linearity of biological tissue and fundamental technical parameters for the instrument must be confirmed. In this study, the fundamental conditions have been investigated for multi-channel bioimpedance measurement and the condition of measurement for biological tissue has been confirmed. The differences of every measurement frequency should be appropriate to 1 kHz and it has been shown that the linearity of biological tissue is maintained. Based on these results, a two-channel bioimpedance measurement instrument has been constructed No potential conflict of interest relevant to this article was reported.

Acta Medica Okayama 1 1996 A new position sensor for high-speed measurement of multiple points EN Mitsuru Baba Tadataka Konishi Yuko Hori Kouji Otani A high-speed measuring system of multiple points is becoming an important issue in many industrial applications. Therefore, the development of a high-speed position sensor is an important issue. However, conventional sensors such as CCD(charge-coupled device) and PSD(position-sensitive detector) are insufficient to apply to the high-speed measurement of multiple points. We propose a new position sensor for high-speed measurement of multiple points. The proposed sensor features a single scanning detecting method of multiple points by parallel processing technique and design of the sensor by analog circuitry, which makes high-speed measurement of multiple points possible. The designed sensor system realizes both high-speed performance and high accuracy No potential conflict of interest relevant to this article was reported.

Acta Medica Okayama 1 2001 Detection of a particular object from motion images under bad condition 318 322 EN Tetsuhiro Sumimoto Kazuoki Kuramoto Saburo Okada Hidekazu Miyauchi Masaaki Imade Hideki Yamamoto Yessy Arvelyna This paper deals with the detection of the rescue target as a particular object from motion images under bad conditions. When shipwrecks occur, the search activities of rescue are done using an airplane. The detection of the rescue target such as a life raft depends on visual search of human eyes. To detect a small rescue target in the wide sea, the searcher man must monitor motion sights in nasty weather. In order to carry out the prompt rescue of human life, development of searching support system using image processing techniques in place of the human eye is required It is very difficult to process the motion images taken by the airplane, because these images are inferior due to shaking of the airplane, sunshine reflections and crest waves under bad conditions. We make a simulation experiment for detection of the rescue target from images. To get basic design data for development of the searching system in the case of a marine casualty, we propose motion image processing techniques using improved S/N ratio and dynamic range of the image data of the rescue target in the motion images under bad conditions No potential conflict of interest relevant to this article was reported.

Acta Medica Okayama 1 1999 Automatic Micromanipulation System using Stereoscopic Microscope 327 331 EN Tetsuya Sano Hidekazu Nagahata Hideki Yamamoto In this paper, we developed a visual feedback system that controls a micromanipulator so that a needle head may reach a target. The system consists of a stereoscopic microscope, a micromanipulator, two CCD cameras and a personal computer. The position of the target and the needle head under stereoscopic microscope are measured three dimensionally by using two CCD cameras which are set to eyepieces of the microscope. It is necessary that the image processing employed be fast so that the micromanipulation can be carried out at a realistic rate. The image processing time for detecting the target and the needle head is greatly reduced by using image compression No potential conflict of interest relevant to this article was reported.

Acta Medica Okayama 1 2002 Computer aided texture alignment of Japanese kimono 491 496 EN Tetsuya Sano Hideki Yamamoto A yukata is a type of traditional Japanese clothing. An alignment of its texture pattern is an important factor of the yukata design. In the traditional design of the yukata, the calculation of the size, texture alignment and the development of the cutting pattern are manually performed. There are traditional rules for the texture alignment. Especially, the texture alignment depends on the experience and intuition of the skilled person. We have developed a CAD system for Japanese kimono. In this paper, we describe methods for automatic texture alignment. At first, image processing algorithms to detect the texture pattern in the kimono cloth are developed. Secondarily, methods of the texture alignment based on the traditional rules are developed. Finally, image processing algorithms for the texture alignment based on the traditional rules are proposed. By using this CAD system, designers can easily tailor the yukata regardless of their skill. No potential conflict of interest relevant to this article was reported.

Acta Medica Okayama 1 2001 Computer aided design system for Japanese kimono 326 331 EN Tetsuya Sano Hideki Yamamoto A yukata is a type of traditional Japanese clothing. An alignment of its texture pattern is an important factor of yukata design. The calculation of the size, texture alignment and the creation of the cutting pattern are manually performed. Especially, the texture alignment depends on the experience and intuition of the skilled person. In this paper, we describe a CAD system for the yukata. First, we developed a measurement system for the wearer's body shape. Second, we developed an algorithm for performing garment simulation of Japanese yukata. The designer can understand the condition of the texture alignment exactly because the yukata is displayed three dimensionally on the wearer's body shape. As a result, designers can easily tailor the yukata No potential conflict of interest relevant to this article was reported.

Acta Medica Okayama 1 2003 Human Body Shape Imaging System and Its Application to Japanese Kimono Design 100 104 EN Tetsuya Sano Hideki Yamamoto A yukata is a type of traditional Japanese clothing. An alignment of its texture pattern is an important factor of the yukata design. Three-dimensional display of the designed yukata becomes necessary for designers to make sure whether the alignment of the texture pattern satisfies wearer's taste or not. In this paper, we describe about a three-dimensional display algorithm of the yukata. At first, we developed an algorithm to measure a shape information of the wearer's body. Secondarily, we developed an algorithm to map the texture pattern of the yukata on the wearer's body. Experimental results show that three-dimensional display of the yukata is useful for the designer to evaluate the result of the texture alignment. No potential conflict of interest relevant to this article was reported.