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8 February 2019 Calibration algorithm for under-display optical fingerprint sensor
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Proceedings Volume 10843, 9th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Optoelectronic Materials and Devices for Sensing and Imaging; 108431M (2019) https://doi.org/10.1117/12.2507404
Event: Ninth International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT2018), 2018, Chengdu, China
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.
© (2019) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Xuhui Peng and Yang Zeng "Calibration algorithm for under-display optical fingerprint sensor", 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); https://doi.org/10.1117/12.2507404
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