About the data augmentation on S3DIS

[linhaojia13]

Hi, @Gofinge. As shown in semseg-ptv2m2-0-base.py, it seems that you have conducted many ablation experiments about choice data augmentation. The RandomColorDrop is not in your final choices, which is different with the previous work KPConv. Have you tried using this technique ？

        transform=[
            dict(type="CenterShift", apply_z=True),
            # dict(type="RandomDropout", dropout_ratio=0.2, dropout_application_ratio=0.2),
            # dict(type="RandomRotateTargetAngle", angle=(1/2, 1, 3/2), center=[0, 0, 0], axis='z', p=0.75),
            # dict(type="RandomRotate", angle=[-1, 1], axis='z', center=[0, 0, 0], p=0.5),
            # dict(type="RandomRotate", angle=[-1 / 64, 1 / 64], axis='x', p=0.5),
            # dict(type="RandomRotate", angle=[-1 / 64, 1 / 64], axis='y', p=0.5),
            dict(type="RandomScale", scale=[0.9, 1.1]),
            # dict(type="RandomShift", shift=[0.2, 0.2, 0.2]),
            dict(type="RandomFlip", p=0.5),
            dict(type="RandomJitter", sigma=0.005, clip=0.02),
            # dict(type="ElasticDistortion", distortion_params=[[0.2, 0.4], [0.8, 1.6]]),
            dict(type="ChromaticAutoContrast", p=0.2, blend_factor=None),
            dict(type="ChromaticTranslation", p=0.95, ratio=0.05),
            dict(type="ChromaticJitter", p=0.95, std=0.05),
            # dict(type="HueSaturationTranslation", hue_max=0.2, saturation_max=0.2),
            # dict(type="RandomColorDrop", p=0.2, color_augment=0.0),
            dict(type="Voxelize", voxel_size=0.04, hash_type='fnv', mode='train',
                 keys=("coord", "color", "label"), return_discrete_coord=True),
            dict(type="SphereCrop", point_max=100000, mode='random'),
            dict(type="CenterShift", apply_z=False),
            dict(type="NormalizeColor"),
            # dict(type="ShufflePoint"),
            dict(type="ToTensor"),
            dict(type="Collect", keys=("coord", "discrete_coord", "label"), feat_keys=["coord", "color"])
        ]

[Gofinge]

Hi, actually, I did not carefully tune the parameter for S3DIS. I did not adopt it, maybe since there was no significant difference. I keep these commented augmentations for easier parameter tuning. (uncomment for enable)

[linhaojia13]

Thank you for your reply!