I've just updated a few tools for working with LAS/LAZ files and added a couple new tools. My LAS to DXF point cloud tool now converts a LAS point cloud to a DXF point cloud and preserves the classification of the laser returns. I.e. LIDAR ground returns are classified as a 2 so all ground returns are placed on layer 2 during the conversion process. Vegetation is classified as 3, 4, or 5 for Low, Medium or High Vegetation and are placed on layers, 3, 4, and 5 respectively. The batch conversion tool has also been updated to support LIDAR classification.
I've added a LAS Feature Extraction Tool. This tool will allow the user to extract/export any or all 18 LAS classifications from a LAS point cloud so that they can be modeled/mapped independently of each other. For example, all vegetation can be extracted for modeling or study, or all roads, railways and bridges can be extracted for traffic studies. Of course it also allows the user to extract just the ground returns for terrain modeling or mapping as well.
See the feature extraction tool here: http://lidarwidgets.com/#!page-feature-extraction
Another tool that I've added is called Mesh2Contour. It allows the user to create contour maps in DXF format from a mesh file that was created by my LAS to Mesh generation tools.
See an output example here: http://lidarwidgets.com/#!page-2dcontours