Greetings Robert! This thing started out as a how-to paper that was only for my own consumption. Then my bean counter counterpart in the lab got a hold of it (as a per-review) and he escalated it! Now they are talking "gee why not make it a paper?"
So, I'm going to have to nail them down this week and see if they really what me to do that! D Glenn robertosfield wrote: > Hi David, > > > On 2 November 2012 23:30, David Glenn < ()> wrote: > > > Greetings All! > > > > I did some analytical research on the files that VPB makes and confirmed > > that the software builds a map to a LOD that is equal to the resolution of > > the texture being used and stops at that point. I also discovered that if > > add two different types of textures shay one that has 15 meters of > > resolution per pixel and another texture that has say 1 meter of resolution > > per pixel > > that it process all areas up to the point that the 15 meter data is exposed > > then continue on only the areas that only the 1 meter data is exposed. > > > > That’s very cool! :) > > > > The Question I have is the question that I know I'm going to get asked, is > > what the function that does this is? How does it determine where to stop > > relative to the size that makes up the area of the terrain? Maybe easier to > > ask, is there any paper that explains how this works? > > > > The way it works is to keep descending the quad tree LODs level till a LOD > level matches or exceeds the resolution of the source data (imagery or DEM) > that covers that particular tile. The -l command option will provide a > maximum number of level to descend down to so if this is less than what is > required then you will not get the full resolution required. > > > > I haven't written a paper on VPB's algorithms. Will you be publishing > yours? Perhaps myself and others can help edit/make suggestion > clarifications. > > Robert, > > ------------------ > Post generated by Mail2Forum ------------------------ David Glenn --------------- D Glenn 3D Computer Graphics & Media Systems. www.dglenn.com ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=50984#50984 _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
