Device-Free Handwritten Character Recognition Method Using Acoustic Signal

• Published in: Journal of robotics and mechatronics Vol. 33; no. 5; pp. 1082 - 1095
• Main Authors: Ogura, Atsushi, Watanabe, Hiroki, Sugimoto, Masanori
• Format: Journal Article
• Language: English
• Published: Tokyo Fuji Technology Press Co. Ltd 20.10.2021
• Subjects: Character recognition; Flat surfaces; Handwriting recognition; Low noise; Smartphones; Sound

In this paper, we propose a method for recognizing handwritten characters by a finger using acoustic signals. This method is carried out using a smartphone placed on a flat surface, such as a desk. Specifically, this method uses an ultrasonic wave transmitted from the smartphone, which is reflected...