Constraint propagation with interval labels
Artificial Intelligence
Geometric reasoning for computer vision
Image and Vision Computing
Solving geometric constraints in a parallel network
Image and Vision Computing
From surfaces to objects: computer vision and three dimensional scene analysis
From surfaces to objects: computer vision and three dimensional scene analysis
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Fisher and Orr (1988) described a geometric reasoning engine based on a value passing constraint network. This paper reports on more recent results from this research: several experiments on detecting inconsistency between constraints, how to blind degrees of freedom in a revolute joint, some results on propagation of error in the networks, and performance on a large three dimensional reasoning problem involving three revolute joints.