question about setting blender

[amiltonwong]

Hi, @SteveJunGao ,

According to the steps, the following two lines are just used for ensuring the existence of pip and numpy:

./python3.7m -m ensurepip
./python3.7m -m pip install numpy 

Do we need to specify the location of bpy module, as it is needed here, when executing render_all.py ?

When I execute

python render_all.py --save_folder /media/root/data2/ShapeNet/render_view --dataset_folder /media/root/data2/ShapeNet/ShapeNetCore.v1 --blender_root /root/Downloads/blender-2.90.0-linux64/2.90/python/bin

I got the following error:

sh: 1: /root/Downloads/blender-2.90.0-linux64/2.90/python/bin: Permission denied

Any hints to solve this issue?

Thanks~

[SteveJunGao]

Hi @amiltonwong ,

Regarding the bpy, you don't need to specify the location for it, as the script render_shapenet.py is running inside Blender's python, and it will find the bpy automatically.

Regarding the error :

sh: 1: /root/Downloads/blender-2.90.0-linux64/2.90/python/bin: Permission denied

It seems you don't have access to the blender file you downloaded, can you double check whether you have access to it?

Also, to see more error message, you can remove >> tmp.out from the command in this line and it will print all the output from blender.

Hope this can help!

[amiltonwong]

Hi, @SteveJunGao ,

Thanks for your reply. I've fixed the problem and figured out it's the wrong configure in my blender.

One more question, does the scales here have some typos? Two 0.9 scale values occur.

Thanks~

[saisurbehera]

How did you get it working @amiltonwong ? How did you fix the wrong configure ?

[SteveJunGao]

@amiltonwong the scale is correct, we normalize all the chairs to the length of 0.7, car & motorbikes to the scale of 0.9, to get the best view of the object when rendering it.

[SteveJunGao]

I close the issue now, if have any updates or further questions related to this issue, feel free to re-open it!

Thanks for trying the code!

[saisurbehera]

Do you know how much time this process takes? I am seeing about 14612 blender runs.

[SteveJunGao]

It depends on the capacity of your GPU card ;)

You can compute the time by (TIME_PER_OBJECT * N_OBJECT)

[saisurbehera]

It is only using a small parts of the GPU

[SteveJunGao]

Yes, the rendering is not GPU intensive. You can also run multiple processes in one GPU such that your GPU utilization can be higher

Note that, you only need to render the dataset once, after that you can train many different models using this rendered dataset.

[Freja71122]

--blender_root /root/Downloads/blender-2.90.0-linux64/2.90/python/bin

--blender_root should not be xxx/blender-2.90.0-linux64/2.90/python/bin, it should be xxx/blender-2.90.0-linux64/blender

[jpainam]

I got 14611 items preprocessed. and not 14612, one item is missing and I've opened an issue about it at #154