Multi-touching imaging via sparse sensing

Senlin Yang Jr.; Xin Chong; Xilong Li Jr.

doi:10.1117/12.2511831

7 November 2018 Multi-touching imaging via sparse sensing

Senlin Yang Jr., Xin Chong, Xilong Li Jr.

Proceedings Volume 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications; 108321N (2018) https://doi.org/10.1117/12.2511831
Event: Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 2018, Changchun, China

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.

Citation Download Citation

Senlin Yang Jr., Xin Chong, and Xilong Li Jr. "Multi-touching imaging via sparse sensing", Proc. SPIE 10832, Fifth Conference on Frontiers in Optical Imaging Technology and Applications, 108321N (7 November 2018); https://doi.org/10.1117/12.2511831

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