Abstract
We present two compact CMOS integrated circuits for computing the two-dimensional (2-D) local direction of motion of an image focused directly onto the chip. These circuits incorporate onboard photoreceptors and focal plane motion processing. With fully functional 14 x 13 and 12 x 13 implementations consuming less than 50 -iW per pixel, we conclude that practical pixel resolutions of at least 64 x 64 are easily achievable. Measurements characterizing the elementary one-dimensional motion detectors are presented along with a discussion of 2-D performance and example 2-D motion vector fields. As an example application of the sensor, it is shown that the array as fabricated can directly compute the focus of expansion of a 2-D motion vector field.
Original language | English (US) |
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Pages (from-to) | 677-687 |
Number of pages | 11 |
Journal | IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing |
Volume | 46 |
Issue number | 6 |
DOIs | |
State | Published - 1999 |
Externally published | Yes |
Keywords
- Analog vlsi
- Cmos imager
- Focus of expansion
- Motion sensor
- Vision chip
ASJC Scopus subject areas
- Signal Processing
- Electrical and Electronic Engineering