Warp-Based Image Distance
Previous Work: Several prior algorithms attempt to provide a deformation-invariant distance measure. Tangent distance [2] uses a planar approximation to a local image manifold, allowing small spatial transformations to be modeled in pixel space. Because of the planar approximation, tangent distance does not work well for large deformations. The “shape context” method [1] is good at obtaining deformation invariance, but loses information by using only samples from image edges.