Furthermore, an STL-file preprocess algorithm is proposed in order to obtain an errors-free final surface modifying starting tessellated model. The developed algorithm has been named Offset Weighted by Angle (OWA). Different test cases are reported and commented....
So without going into the nitty-gritty, the above fit looks at all the data and then fits a line. Loess however, moves along the dataset, and looks at chunks at a time, fitting a bunch of smaller lines that connect to make one smooth line. Alright, enough background. On to the how...