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charlesq34 / pointnet

PointNet: Deep Learning on Point Sets for 3D Classification and Segmentation
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about the training data!!! #95

Open GangTieMan opened 6 years ago

GangTieMan commented 6 years ago

Hello,

It's a great work you have done with PointNet ! Thank you for that. I am a student who is learning on the PointNet.I learnt that your training data is made up by a CAD model(.obj->mesh->HDF5).Is that right? And I wonder that can I make training data using raw data in las format?

Thank you very much in advance.

charlesq34 commented 6 years ago

HI @GangTieMan

OBJ is a file format for storing meshes. What I do is to sample points from mesh surfaces and then store them into HDF5 files. You can use LAS format too, just read those files to raw point clouds, sample points and store into HDF5 files.

GangTieMan commented 6 years ago

Thank you for your reply! And how many training samples are appropriate?According to the actual situation,my data is limited.I need to make a satisfactory result with the least number of samples. I have trained the net using my own data which include three classes(traindata1 1610243;traindata2 1610243;testdata1 1610243).I changed the parameter : Class(40->3). But there is no result.I think maybe the problem is the number of samples. Thank you again.