Incremental improvements to DSM and class images
Incremental improvements to DSM and class images

Changes include:
* Tweaking medianFilters with quantileFilter substitutes
* Applying well filter to DSM
* Fix sections of the code that use the Tree-filtered version of DSM when they want the original DSM
* Extend building label to surrounding vegetation pixels when they match the height of the building
* Apply a median filter to building labels to help smooth building edges

pubgeo/pubgeo