A 134-Pixel CMOS Sensor for Combined Time-of-Flight and Optical Triangulation 3-D Imaging

作者：Sgrott Oreste^*; Mosconi Daniel; Perenzoni Matteo; Pedretti Gianmaria; Gonzo Lorenzo; Stoppa David

来源：IEEE Journal of Solid-State Circuits, 2010, 45(7): 1354-1364.

DOI：10.1109/JSSC.2010.2048076

• CMOS active pixel
• image sensor
• range finding
• three-dimensional image sensor
• optical triangulation
• time-of-flight

This paper describes the design and characterization of a 134-pixel linear array sensor for three-dimensional measurements based on both multiple-pulse indirect-time-of-flight (ITOF) and optical triangulation (OT) techniques. In OT mode, a winnertake- all (WTA) stage allows for a fast localization of the spot position along the pixel array so that only useful pixels are selectively read out, for a maximum operation speed of 131 kVoxel/s. Distance measurements in OT mode over the range 0.4 m-1.0 m are obtained with a best precision of 0.004%-0.21%, while ITOF operation allows mapping the range 0.8-3 m at 125 voxel/s with a relative precision of 1.7%-3.8%. Background rejection up to 10 klux has also been demonstrated without the need of any optical filters.

• 出版日期2010-7