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JonFreer / COLMAP_OpenGL_Renderer

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Missing png.c file #1

Closed MrMaaoui closed 3 years ago

MrMaaoui commented 3 years ago

Hello,

I'm trying to use this solution to align data to the neural rendering in the wild paper, however, compiling the project keeps returning an undefined reference to every method declared in png.h that suggests the implementation of the methods are missing, upon closer inspection, I noticed that the png.c file is missing.

Is it possible to provide me with the png.c file? or am I doing something wrong?

I'm using Ubunto as my OS, VSCode as my IDE with g++5 and c++11 and the bild task include -lglut, -lGLU and -lGL flags.

Thank you in advance.

JonFreer commented 3 years ago

Hi,

The project uses http://www.libpng.org/pub/png/libpng.html to handle png. You will have to build it separately for your os. I have mostly rewrote this project in python, I will work to have it pushed in the next couple of days. Let me know if you have any other questions.

Jon

MrMaaoui commented 3 years ago

Thank you for the fast reply, I will dowload and build it on my os. Also, I will be looking forward to the python implimentation.

JonFreer commented 3 years ago

Sorry this is later than I said but here is the python implementation. https://github.com/JonFreer/python_colmap_rerenderer

I have only tested it a little but it seems to work. It is a lot slower than the c++ implementation. If speed is critical you can change the density which will reduce the number of points rendered.

I found https://github.com/colmap/colmap/tree/dev/scripts/python, mainly visualize_model.py, which used open3D to render the point cloud. This might be faster than my python only method.

Hope this helps.

MrMaaoui commented 3 years ago

Thank you for the update, I'll make sure to update you on the python_colmap_rerenderer repo if I encounter any issues.