Understanding of Ridge-Valley Lines on Image -Intensity Surfaces in Scale-Space. - Supoj Chinveeraphan; Ryo Takamatsu; Makoto Sato (CAIP, 1995)

A new operator for image structure analysis. - Phongsuphap Sukanya; Ryo Takamatsu; Makoto Sato (ICIP (3), 1996)

A hierarchical description of digital grayscale images based on image dipoles. - Supoj Chinveeraphan; Ryo Takamatsu; Makoto Sato (ICPR, 1996)

Stimulus-driven segmentation by Gaussian functions. - Shun Ido; Satoshi Arai; Ryo Takamatsu; Makoto Sato (ICPR, 1996)

A new operator for describing topographical image structure. - Phongsuphap Sukanya; Hideki Tanuma; Ryo Takamatsu; Makoto Sato (ICPR, 1996)

Texture Classification Based on Topographic Image Structure. - Phongsuphap Sukanya; Ryo Takamatsu; Makoto Sato (MVA, 1996)

Space Browsing Interface based on Head Posture Information. - Ryo Takamatsu; Tomotaka Taniguchi; Makoto Sato (APCHI, 1998)

The Surface-Shape Operator based Shading-Tolerant Method for Multiscale Image Analysis. - Phongsuphap Sukanya; Ryo Takamatsu; Makoto Sato (ICIP (1), 1998)

Image classification using the surface-shape operator and multiscale features. - Phongsuphap Sukanya; Ryo Takamatsu; Makoto Sato (ICPR, 1998)

Multiscale image analysis through the surface-shape operator. - Phongsuphap Sukanya; Ryo Takamatsu; Makoto Sato (J. Electronic Imaging, 2000)

Wearable Perspiration Volume Sensor Using Dual-Frequency Impedance Measurement. - Ryo Takamatsu; Shogo Amano; Shintaro Izumi; Hiroshi Ohta; Toshikazu Nezu; Yuki Noda; Teppei Araki; Takafumi Uemura; Tsuyoshi Sekitani; Hiroshi Kawaguchi 001 (IEEE SENSORS, 2022)

Wearable Perspiration Characteristic Sensor Using Bi-Directional Driver Circuit. - Ryo Takamatsu; Shintaro Izumi; Hiroshi Kawaguchi 001 (ICCE, 2024)