2024-03-28T19:52:52Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1700132021-06-10T15:20:46Zcom_10261_90com_10261_4col_10261_469
2018-09-21T08:56:46Z
urn:hdl:10261/170013
Photon Counting and Direct ToF Camera Prototype Based on CMOS SPADs
Vornicu, Ion
Carmona-Galán, R.
Rodríguez-Vázquez, Ángel
This paper presents a camera prototype for 2D/3D image capture in low illumination conditions based on single-photon avalanche-diode (SPAD) image sensor for direct time-offlight (d-ToF). The imager is a 64×64 array with in-pixel TDC for high frame rate acquisition. Circuit design techniques are combined to ensure successful 3D image capturing under low sensitivity conditions and high level of uncorrelated noise such as dark count and background illumination. Among them an innovative time gated front-end for the SPAD detector, a reverse start-stop scheme and real-time image reconstruction at Ikfps are incorporated by the imager. To the best of our knowledge, this is the first ToF camera based on a SPAD sensor fabricated and proved for 3D image reconstruction in a standard CMOS process without any opto-flavor or high voltage option. It has a depth resolution of 1cm at an illumination power from less than 6nW/mm 2 down to 0.1nW/mm 2 .
2018-09-21T08:56:46Z
2018-09-21T08:56:46Z
2017
comunicación de congreso
IEEE International Symposium on Circuits and Systems (ISCAS). 2017
http://hdl.handle.net/10261/170013
10.1109/ISCAS.2017.8050410
eng
Postprint
https://doi.org/10.1109/ISCAS.2017.8050410
Sí
openAccess
Institute of Electrical and Electronics Engineers