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zhou13 / holicity

HoliCity: A City-Scale Data Platform for Learning Holistic 3D Structures
https://holicity.io/
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How to acquire the wireframs annotations (i.e. junctions and lines) from existing annotations ? #11

Closed ToddBear closed 2 years ago

zhou13 commented 2 years ago

Sorry for missing your issues.

You basically have 2 options: The first one is using the OpenGL-based algorithm from my shapeunity repo: https://drive.google.com/drive/folders/1ZviOGlkqi3q6QS_gnmxvo5ocMQ4JX7n2?usp=sharing. It should work out of box and is relatively robust. However, due to the precision of OpenGL z-buffer, it might miss some lines.

The ideal solution is to use some geometry processing algorithms to extract wireframes. You could start from our initial effort https://github.com/hjwdzh/VectorGraphRenderer. Unfortunately, the processing algorithm is very complex and I think that tool still contains some bugs.

zhou13 commented 2 years ago

Let me know if you have other questions.

ToddBear commented 2 years ago

Sorry for the late feedback. Unfortunately, I'm not working on the relevant project anymore, so I did not try the above methods. Thank you for your kind offer of help.