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Proceedings Paper

Calibration algorithm for under-display optical fingerprint sensor
Author(s): Xuhui Peng; Yang Zeng
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Paper Abstract

We present in this work a calibration method for under-display optical fingerprint sensor. Sources of nonuniformity in captured raw images are analyzed, which are attributed to Moiré fringe and rear leakage of pixel luminance. An algorithm is proposed to filter the fingerprint image based on two pre-stored frames measured with standard reflecting surfaces. As a result, clear fingerprint images are obtained from an under-OLED optical sensor.

Paper Details

Date Published: 8 February 2019
PDF: 5 pages
Proc. SPIE 10843, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging, 108431M (8 February 2019); doi: 10.1117/12.2507404
Show Author Affiliations
Xuhui Peng, Shanghai Tianma Microelectronics Co., Ltd. (China)
Yang Zeng, Shanghai Tianma Microelectronics Co., Ltd. (China)


Published in SPIE Proceedings Vol. 10843:
9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging
Yadong Jiang; Xiaoliang Ma; Xiong Li; Mingbo Pu; Xue Feng; Bernard Kippelen, Editor(s)

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