WANG Bei-bei, WANG Xiang-jun, ZHANG Zhao-cai. Study on measurement model of monocular vision coordinate based on virtual beelines[J]. 2009, 28(10): 20-22.
WANG Bei-bei, WANG Xiang-jun, ZHANG Zhao-cai. Study on measurement model of monocular vision coordinate based on virtual beelines[J]. 2009, 28(10): 20-22. DOI: 10.13873/j.1000-97872009.10.016.
A new algorithm for target coordinates acquisition based on monocular vision is proposed on the condition of camera fixation and co-planarity.The virtual beelines are presented depending on the transformation of projective geometry
which does not require computation camera calibration.Some geometric information is needed to acquire the basic viewpoint invariant cross-ratio
which is an essential invariant with respect to projective transformations.After getting the cross ratio of the 4 points which are collinear
the target coordinate is computed.The experiment result shows that this algorithm is more practical and has high precision as the CCD can be arranged optionally.
Probabilistic analysis of the application of the cross ratio to model based vision [J] . Stephan J. Maybank. International Journal of Computer Vision . 1995 (1)