Detecting Changes in 3-d Shape using Self-Consistency


Leclerc, Y. and Luong, Q.-T. and Fua, P. Detecting changes in 3-d shape using self-consistency, in Proceedings of the Conference on Computer Vision and Pattern Recognition (CVPR2000), Hilton Head, South Carolina, Jun 2000.


A method for reliably detecting change in the 3-D shape of objects that are well-modeled as single-value functions z f xy = (,) is presented. It uses an estimate of the accuracy of the 3-D models derived from a set of images taken simultaneously. This accuracy estimate is used to distinguish between significant and insignificant changes in 3-D models derived from different image sets. The accuracy of the 3-D model is estimated using a general methodology, called self-consistency, for estimating the accuracy of computer vision algorithms, which does not require prior establishment of “ground truth”. A novel image-matching measure based on Minimum Description Length (MDL) theory allows us to estimate the accuracy of individual elements of the 3- D model. Experiments to demonstrate the utility of the procedure are presented.

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