SceneryDesign.org One problem with the scenProc feature to place objects along a line was that the user could not influence the orientation of the model. It would just follow the line and for the default light everything ended up fine. But if you wanted the use an object that was oriented differently in the MDL file […]
Is it easy to waste performance?
Let me start with the answer to the question I posed in the title: YES. Earlier this week I introduced a scenProc update that could handles holes in shapefile polygons. This new features used the functions I have to do boolean operations on polygons. Things like intersect or subtract two polygons. This functionality is also […]
Features with holes
Holes are often used in shapefiles, for example to mark an island in an water polygon or to mark a clearing in a forest polygon. Until now scenProc did not support holes, so they were ignored when importing shapefiles. As a result of this the autogen generated would not be correct. The scenProc code that […]
Be careful for narrow houses
Two users recently reported the same problem to me with autogen files made with scenProc. In Annotator they could not see all the buildings and after saving in Annotator many of the buildings were gone. It turned out this problem was caused by very narrow buildings. So I want to warn all scenProc users of […]
Tree detection – part 4
It’s a while ago that I posted about the progress of my tree detection efforts. So here is a quick update. Some other things kept me busy, so there hasn’t been too much progress recently. I was able to run the tree detection algorithm on the entire island of Nantucket now. It took around 3.5 […]
SPLITGRID? Check!
In my bug reporting system I can see that it relatively often happens that people run into trouble (crashes) because they remove the SPLITGRID step from their configuration file. If you then try to create autogen features scenProc will crash. This is because I assumed that the SPLITGRID step will be done first. This step […]
I flipped it
Yesterday I fixed a bug in the scenProc step that imports AGN files. There was an issue in this step that resulted in part of the autogen features being displayed wrong. They were vertically flipped. So if you are using the import AGN step in your workflow, please update to the latest version and run […]
Tree detection – part 3
I have made some more progress on the tree detection algorithm in the last days, but I am not there yet. So some more testing is needed before the functionality can be put in scenProc. In my previous post I showed some results from the algorithm running in a test application. What I have done […]
Tree detection – part 2
I am travelling for my work this week, but when I had an few hours in the evening to spend in my hotel room I did some more experimentation with the tree detection algorithm. I have now modified my test tool so that you can click on the trees in the image to determine the […]
Tree detection
One of the first problems I encountered when I tried to make autogen for Nantucket is the lack of vector data for the vegetation. OpenStreetMap contains hardly any vegetation and also the GIS department of Massachusetts has not much usable data. So therefore I started to experiment with detecting the vegetation in the imagery. And […]