How to remove faces with no texture in TextureMesh

[XudongYong]

Specifications like the version of the project, operating system, and hardware

openMVS master, Ubuntu 16.04 with 16G RAM

Steps to reproduce the problem

Hi @cdcseacave ,
Thanks for your great contribution! Currently, I'm trying to modify the normal pipeline (SparsePointCloud -> DensifyPointCloud -> Mesh -> Texture) without using the DensifyPointCloud step. Now, I can get a reasonable 3D model except one thing. From below snapshot, we can see there are several faces with no texture but just predefined yellow color and these faces are introduced owing to mesh with sparse point cloud.
To keep the effect, I want to remove these faces with no texture. I look deep into the source code and find the part named "create texture patches" in function FaceViewSelection() of SceneTexture.cpp, and I think maybe I can remove faces in the last element of texturePatches, but I don't know how to establish the relationship between "scene.mesh.faces" and "texturePatches.Last().faces".
For the problem "how to remove faces with no texutre", could you give me any suggestions?

[XudongYong]

Today I fix this issue and my guess is right, that "scene.mesh.faces" and "texturePatches.Last().faces" is one-to-one correspondence in index. Meanwhile, the faceTexcoords should also be updated after removing textureless faces. Since this issue has been fixed, I will close this thread.

[calmelo]

Today I fix this issue and my guess is right, that "scene.mesh.faces" and "texturePatches.Last().faces" is one-to-one correspondence in index. Meanwhile, the faceTexcoords should also be updated after removing textureless faces. Since this issue has been fixed, I will close this thread.

How did you resolve the problem? Can you share steps and codes?

[cdcseacave]

Pls try this PR #1162

[calmelo]

Pls try this PR #1162

Thanks! But I use the 1.1.1 version, and the changes are adapted to version 2? I try to add those codes to version 1.1.1, which leads to the incorrect results. Some places which can be textured correctly are textured with the empty color. This is really strange. Do you know how can I fix this bug?

[cdcseacave]

Pls use latest OpenMVS code in develop

[calmelo]

Pls use latest OpenMVS code in develop

However, the latest texture result is incorrect. What's the difference between poses of version 2 and version 1? I can get the correct texture using version 1.1.1

[cdcseacave]

there are no differences

[calmelo]

there are no differences

Version2.3.0, master branch, can obtain the correct result using "TextureMesh scene_dense.mvs -m scene_dense_mesh_refine.ply -o scene_dense_mesh_refine_texture.mvs" from the openmvs_sample. However, using the same data and command, version 1.1.1 get the error "14:15:19 [App ] unrecognised option '-m'". I change the -m to --mesh-file, and get the error "14:15:29 [App ] error: invalid project". Why I get the different results using version 2.3.0 and 1.1.1?

[calmelo]

there are no differences

There are my own data result of version 1.1.1 and 2.3.0:


The result of version 1.1.1 is correct, but the result of version 2.3.0 is significantly offset towards the upper right.

[cdcseacave]

so you are saying that you get the correct result with 2.3.0, so just use it, no need for 1.1.1 now, right?

Version2.3.0, master branch, can obtain the correct result 

[calmelo]

so you are saying that you get the correct result with 2.3.0, so just use it, no need for 1.1.1 now, right?

Version2.3.0, master branch, can obtain the correct result 

Now for my own data, I can get the correct result using version 1.1.1, but cannot get the correct result using version 2.3.0. I don't know why, so I want to know the differences between the two branch.

[calmelo]

Pls try this PR #1162

I try to add those codes to version 1.1.1, which leads to the incorrect results. Some places which can be textured correctly are textured with the empty color. The empty color is set to white.