|
Abstract: A kind of low cost single camera model used to measure
coordinates in space is introduced. In structure design, the traditional
double CCD camera is updated to single CCD camera. By adding two groups
of symmetrical reflectors, the single camera is imaged to a pair of
virtual cameras. Then two pictures of the same object with parallax can
be gathered from one CCD’s image surface. After that, the 3D information
of dot can be retrieved. The calibration method of this vision sensor
based on its 3D measuring model has also been set forth, and its
mathematic model is constructed. The solution is proven by experiments
not only to be available but also be economic and quick. The method of
the calibration is simple with less demand for the calibration
environment and the posture of target.
Key words: Single camera Vision measurement Mirror image
Parallax
CLC No: TH702
TH822
国家自然科学基金(50305024)和国家自然科学基金科学仪器基础研究专项基金(50327501)资助项目.
Received 20050310, received in revised form 20050830
|