Efficient dynamic time warping for 3D handwriting recognition using gyroscope equipped smartphones

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Dae-Won Kim, Jae-Sung Lee, Hyunki Lim, Jeong Bong Seo, Bo-Yeong Kang

Published: 2014, Last Modified: 07 Nov 2025Expert Syst. Appl. 2014EveryoneRevisionsBibTeXCC BY-SA 4.0
Abstract: Highlights•This is the first smartphone demonstration study for 3D handwriting recognition.•A 3D gyroscope is superior to 3D accelerometers to recognize similar shaped letters.•A fast DTW reduced the computing cost of the recognition algorithm in mobile devices.