Morphological operations by locally variable structuring elements and their applications to region extraction in ultrasound images. - Masayasu Ito; Masayoshi Tsubai; Akira Nomura (Syst. Comput. Jpn., 2003)

An Implementation of Image Sharpening Based on Morphological Operations for Ubiquitous Echo. - Masayoshi Tsubai; Naoshi Mitoda; Osamu Fukuda; Naohiro Ueno (EMBC, 2006)

Development of a Ubiquitous Echographic Device for Evaluating Human Body Composition. - Osamu Fukuda; Masayoshi Tsubai; Masahiro Inoue; Nan Bu; Naohiro Ueno; Hiroshi Okumura; Kohei Arai (J. Digit. Content Technol. its Appl., 2009)

Development of a Flexible System for Measuring Muscle Area Using Ultrasonography. - Kiyotaka Fukumoto; Osamu Fukuda; Masayoshi Tsubai; Satoshi Muraki (IEEE Trans. Biomed. Eng., 2011)