A Binocular 3-D Image Sensor

In this particular CMOS image sensor chip, two image arrays and 32-channel parallel pipeline analog-to-digital converters are integrated. The parallax between two images is estimated by a phase-only correlation (POC). The developed 3-D imaging system can be used for PCB board inspection. As shown below, the CMOS image sensor developed can detect a tiny electronic components whose height is 0.5mm at 300 frames/s.

Image Sensor Chip

(left) (Right)

(Range Image）

References

1. T.Kato, S. Kawahito, K.Kobayashi, H.Sasaki, T.Eki, T.Hisanaga,"A binocular CMOS range image sensor with bit-serial block-parallel interface using cyclic pipelined ADC's", Dig.Tech Papers,Symp. VLSI circuits, pp.270-271, Honolulu,June 2002