This question is related to the way that PCL Viewer displays PolygonMesh, when Using C++ and Windows. As you may know, the color of each face is calculated based on the mean of the color of three vertices constructed the triangle (if it is square, so the color is calculated based on vertices of the square). But, In other 3D software (such as MeshLab, CloudCompare, ...), if same mesh is opened, the color of each face not only is not a constant color, but also is a gradient which changes smoothly among the colors of the vertices.
Now I want to know that is there any possibility in PCL Viewer (or OpenCV or VTK,) to display the color smoothly (like the one in MeshLab)?
Besides, I have also another question related to face color: How can I change the color of a face, for a PolygonMesh object in PCL library?
Great and interesting Question you posted there. I would like to see all the answers that experts in this domain will suggest for you.
Hi,
I do work with PCL, but for me it stands for poly(E-caprolaptone)
cheers!
Hi Hooshiar,
I'm not the best one to answer the first question, but about the second one is quite easy to answer. There is a member function of the PCLVisualizer class called setShapeRenderingProperties. The best way to use is:
viz.setShapeRenderingProperties(pcl::visualization::PCL_VISUALIZER_COLOR, r, g, b, "mesh_id");
bye!
Hi Hooshiar,
If you want to "simulate" a kind of gradient within a face, what about subsampling the faces? You can subdivide each "triangle" in multiple ones in order to generate "the desired color gradient". However, you'll also increase the computation/processing time. I hope this insight can help you.
Cheers!
The best place to get answers to questions on Point Cloud Library is on the User's List:
http://www.pcl-users.org/
In general, you will hear from one of the developer's in a few hours to overnight, worse case.
There is also a developer's list.
Dear Hooshiar Zolfagharnasab,
Look the link, may be useful.
http://robotica.unileon.es/mediawiki/index.php/PCL/OpenNI_tutorial_2:_Cloud_processing_(basic)
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