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Proceedings Paper

Multi-touching imaging via sparse sensing
Author(s): Senlin Yang Jr.; Xin Chong; Xilong Li Jr.
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Paper Abstract

For the fast touching imaging of the capacitive touch screens (CTS) with a very large size, the conventional methods can only be achieved at the expense of the analog hardware complexity and power consumption. Firstly, the sparse feature of variation within the capacitance of CTS being touched was analyzed. Secondly, the principal for measuring the capacitance of CTS was introduced, and then the scheme of sparse touching imaging was given. Moreover, the hardware implementation for sparse sensing was presented. An algorithm of touching sensing for CTS and its implementation were proposed. The test result indicated the validity of sparse touching imaging for CTS. The proposed method can achieve touching imaging efficiently with lower hardware complexity and lower power consumption.

Paper Details

Date Published: 7 November 2018
PDF: 5 pages
Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 108321N (7 November 2018); doi: 10.1117/12.2511831
Show Author Affiliations
Senlin Yang Jr., Xi’an Univ. (China)
Xin Chong, Emerson Network Power Ltd. (China)
Xilong Li Jr., Xi’an Univ. (China)


Published in SPIE Proceedings Vol. 10832:
Fifth Conference on Frontiers in Optical Imaging Technology and Applications
Junhao Chu; Wenqing Liu; Huilin Jiang, Editor(s)

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