Hey did you know that dot to dots, Monet and LiDAR sensing all have something in common? I do now. LiDAR sensing is a interesting concept. An active sensor - sends "pings" across a surface, the ping returns, creates a picture. What makes it special are the number of returns surfaces will give, some one, some three. Then there is the art of learning to interpret the dots. Certain types of filters are put into place. Then whoosh, a picture (of types) emerges. It could be a profile when the image is sliced; it could turn into a 3d movie when one flies around. I wonder if the artist Monet had a grasp of this before it was invented. Some of our filtered results look like he could have painted them.
Here's a slice of two las files from Charleston, West Virginia. One from the hills, the other at the river. The river picture is filtered by ping codes which gives it a flare. The hill image profile shows that trees can be evaluated as well.
Our study of elevation and intensity in las files (LiDAR) images shows some differences between the filters.
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