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manhofer / Line3Dpp

Line3D++ - Multi-View Stereo using Line Segments
Mozilla Public License 2.0
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STL files show nothing of the result #4

Closed EthanGreen75 closed 8 years ago

EthanGreen75 commented 8 years ago

Hi,@manhofer I build all the procedures in VS2013. Finally, three files were generated but when I open the STL with any STL viewer, nothing show up. OBJ file seems work well and i can see the point clouds. I guess the every pair of points stands for one line in 3D space, is that right? Could you tell me what software you are using for openning the STL file?

EthanGreen75 commented 8 years ago

By the way, i use the software ABViewer to open STL file, nothing shows. But when i use the preview function of ABViewer i can see a 2D picture of the 3D structure. It's really strange could you give me some hints? image

image

manhofer commented 8 years ago

Am 24.05.2016 um 04:49 schrieb Ethan Green:

By the way, i use the software ABViewer to open STL file, nothing shows. But when i use the preview function of ABViewer i can see a 2D picture of the 3D structure. It's really strange could you give me some hints? image https://cloud.githubusercontent.com/assets/5960871/15490710/215b6040-219d-11e6-8c5f-9678a20a18ef.png

image https://cloud.githubusercontent.com/assets/5960871/15490715/341d2556-219d-11e6-9593-92648c5b6ce0.png

— You are receiving this because you were mentioned. Reply to this email directly or view it on GitHub https://github.com/manhofer/Line3Dpp/issues/4#issuecomment-221152939

Hi

The .stl files are more or less just a workaround, and represent the 3D lines as triangles where two of the endpoints are identical. I have used this representation because it was also done this way in the paper by Jain et al. from CVPR 2010 1, which was the motivation for my approach. This means that some viewers might cancel out the 3D lines, since the underlying triangles have a zero area.

I am always using the freeware tool Meshlab to open the .stl files (see Readme file).

I will look into the possibility of changing the way the 3D lines are represented in the .stl files, as real lines rather than "fake" triangles.

Best, Manuel

Dipl.-Ing. Manuel Hofer Schanzelgasse 24/23 A-8010 Graz

EthanGreen75 commented 8 years ago

@manhofer ， Thank you so much for your reply so quickly. It really helps me a lot.

manhofer commented 8 years ago

You're welcome :-)

manhofer commented 8 years ago

I will close this issue for now. If I change the stl representation I will let you know.