fcaf3d_2xb8_scannet-3d-18class.py

_base_ = [
    '../_base_/models/fcaf3d.py', '../_base_/default_runtime.py',
    '../_base_/datasets/scannet-3d.py'
]
n_points = 100000

train_pipeline = [
    dict(
        type='LoadPointsFromFile',
        coord_type='DEPTH',
        shift_height=False,
        use_color=True,
        load_dim=6,
        use_dim=[0, 1, 2, 3, 4, 5]),
    dict(type='LoadAnnotations3D'),
    dict(type='GlobalAlignment', rotation_axis=2),
    dict(type='PointSample', num_points=n_points),
    dict(
        type='RandomFlip3D',
        sync_2d=False,
        flip_ratio_bev_horizontal=0.5,
        flip_ratio_bev_vertical=0.5),
    dict(
        type='GlobalRotScaleTrans',
        rot_range=[-0.087266, 0.087266],
        scale_ratio_range=[.9, 1.1],
        translation_std=[.1, .1, .1],
        shift_height=False),
    dict(type='NormalizePointsColor', color_mean=None),
    dict(
        type='Pack3DDetInputs',
        keys=['points', 'gt_bboxes_3d', 'gt_labels_3d'])
]
test_pipeline = [
    dict(
        type='LoadPointsFromFile',
        coord_type='DEPTH',
        shift_height=False,
        use_color=True,
        load_dim=6,
        use_dim=[0, 1, 2, 3, 4, 5]),
    dict(type='GlobalAlignment', rotation_axis=2),
    dict(
        type='MultiScaleFlipAug3D',
        img_scale=(1333, 800),
        pts_scale_ratio=1,
        flip=False,
        transforms=[
            dict(
                type='GlobalRotScaleTrans',
                rot_range=[0, 0],
                scale_ratio_range=[1., 1.],
                translation_std=[0, 0, 0]),
            dict(
                type='RandomFlip3D',
                sync_2d=False,
                flip_ratio_bev_horizontal=0.5,
                flip_ratio_bev_vertical=0.5),
            dict(type='PointSample', num_points=n_points),
            dict(type='NormalizePointsColor', color_mean=None),
        ]),
    dict(type='Pack3DDetInputs', keys=['points'])
]
train_dataloader = dict(
    dataset=dict(
        type='RepeatDataset',
        times=10,
        dataset=dict(pipeline=train_pipeline, filter_empty_gt=True)))
val_dataloader = dict(dataset=dict(pipeline=test_pipeline))
test_dataloader = val_dataloader

optim_wrapper = dict(
    type='OptimWrapper',
    optimizer=dict(type='AdamW', lr=0.001, weight_decay=0.0001),
    clip_grad=dict(max_norm=10, norm_type=2))

# learning rate
param_scheduler = dict(
    type='MultiStepLR',
    begin=0,
    end=12,
    by_epoch=True,
    milestones=[8, 11],
    gamma=0.1)

custom_hooks = [dict(type='EmptyCacheHook', after_iter=True)]

# training schedule for 1x
train_cfg = dict(type='EpochBasedTrainLoop', max_epochs=12, val_interval=12)
val_cfg = dict(type='ValLoop')
test_cfg = dict(type='TestLoop')