GH: definition Z,f,g d Z d GH ( X, Y ) = inf H ( f ( X ) , g ( Y )) - PowerPoint PPT Presentation

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GH: definition Z,f,g d Z d GH ( X, Y ) = inf H ( f ( X ) , g ( Y )) 1 The Elad-Kimmel approach compare surfaces under invariance to bends . MDS, or multidimensional scaling. Given D distance matrix of size n n find n points Z in

GH: definition Z,f,g d Z d GH ( X, Y ) = inf H ( f ( X ) , g ( Y )) 1
The Elad-Kimmel approach • compare surfaces under invariance to bends . • MDS, or multidimensional scaling. • Given D distance matrix of size n × n find n points Z in Euclidean space s.t. D ( Z ) is as close as possible to D . • So, given two shapes X and Y (triangulated surfaces), use the triangula- tions and Dijkstra (or whatever you want, fast marching etc) to obtain an estimate of the geodesic distance matrices d X and d Y . • Select subsets X andn Y of X and Y using max − min (a.k.a. FPS, farthest point sampling).
MDS 3
F G

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