Edges Extracted

Edges were extracted with multiple variance filters with different widths followed by a linear feature extraction method based on local maximum convolution.  Two images on the same row below contain the edges extracted with the same combination of operator parameters from the two original images, respectively.  Some edges were extracted better with some parameters than with others.  But before experiments, it is hard to know which set of parameters will lead to the best results.  Results like these can be combined and cleaned up for matching.

Main Page || Original DEM Images || Extracted Features || DEM Mosaic I
DEM Mosaic II || Image Mosaic

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