a) original image with 481 x 321 pixels; b)c)d) BWP compression with 1000, 500 and 100 graph wedgelets; e)f)g) center nodes for BWP encoding in b)c)d). The PSNR values are b) 40.762 dB, c) 37.935 dB, ...

The input is a 3D binary image containing a one-dimensional voxel skeleton, generated e.g. using the "Skeleton3D" thinning function available on MFEX. The output is the adjacency matrix of the graph, ...