A slight improvement in SceneTexture

[WinterCodeForEverything]

I experiment Texture a lot using OpenMVS, the result is pretty good except a small problem,when the mesh is dense and doesn't have enough images( or views ), there are a lot of small diffused triangles without texture (or textured with empty color). I read the code carefully and think the problem may be in the FaceViewSelection( in SceneTexture.cpp), after choosing the label for each triangle using LBP algorithm, maybe we could check if triangles arond one triangle have the same label and this triangle has different label or ilegal label, and change the triangle's label makes them same, maybe it can solve the above problem. is it right or is there any simpler way to solve the problem? please tell me and maybe we could improve it together.

[cdcseacave]

That is doable, but i think the real solution here is decimation: the mesh should be simplified a bit before, and all small triangles will be removed without affecting the accuracy. That will not only solve this issue , but will significantly speed up the entire process.

[WinterCodeForEverything]

Thanks for reply, Yeah, simplify mesh may ease the problem but can't solve it totally, and more important, beacuse of shadow and background light, color will be more incorrect in the global or local leveling as mesh is more simple. Because I get pointcloud from structurelight not SfM, the point is always more dense compared with the image resolution. And I don't know how to simplify mesh in order to balance the above side effect. here are same models in different point number(25w,11w,6w). the number is smaller, the hole is less but the color is more dark. 25w.zip 11w.zip 6w.zip

I try my idea but has bug, where's error:

[cdcseacave]

Simplifying the mesh should not result in texture problem. Use a good mesh simplification algorithm.

The code above has at least 2 problems:

1. you should assign label only to faces that do not have one (label == NO_ID)
2. the second FOREACH should be using indices in the vector, not the vector data, so that you check idx+1 the next adjacent face

[WinterCodeForEverything]

thanks alot ,I will check it.

[CanCanZeng]

Hi, did you fix this function finally? @WinterCodeForEverything

[WinterCodeForEverything]

Hi, did you fix this function finally? @WinterCodeForEverything

No, there are other bugs when fixing it

[zxxsam]

Is the problem finally solved? Can you give me some advice, thank you very much!

[cdcseacave]

pls decimate the mesh before texturing so that the triangles size increases a bit to match the images resolution