About ElasticDistortion
RayYoh opened this issue · comments
Hi Xiaoyang. Are there any resources that can help understand ElasticDistortion data aug?
I have searched other open-sourced codes like PointGroup, Oneformer3D. All these code first div voxel_size or time voxel_scale, and then do the data augmentation use the same parameters while Pointcept uses different parameters. I am not sure whether this is a strong augmentation for the data and then further influences the final performance.
Hi, I think Spatio-Temporal Segmentation by Chrischoy is the first introduced ElasticDistortion. And I think the order of ElasticDistortion and GridSampling doesn't matter.
Yeah, it's true the order doesn't matter. But I have not understood the distortion parameters, I mean granularity and magnitude. Which have different scales. [[6, 40], [20, 160]] vs [[0.2, 0.4], [0.8, 1.6]]. I'm not sure whether I ignore some operation before ElasticDistortion.
Oh, actually, I also don't fully understand the meaning of these parameters. I just transfer them from Chris Choy's repo.
Alright, thanks for your reply.