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maskformer_r50_ms-16xb1-75e_coco.py
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maskformer_r50_ms-16xb1-75e_coco.py
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_base_ = [
'../_base_/datasets/coco_panoptic.py', '../_base_/default_runtime.py'
]
data_preprocessor = dict(
type='DetDataPreprocessor',
mean=[123.675, 116.28, 103.53],
std=[58.395, 57.12, 57.375],
bgr_to_rgb=True,
pad_size_divisor=1,
pad_mask=True,
mask_pad_value=0,
pad_seg=True,
seg_pad_value=255)
num_things_classes = 80
num_stuff_classes = 53
num_classes = num_things_classes + num_stuff_classes
model = dict(
type='MaskFormer',
data_preprocessor=data_preprocessor,
backbone=dict(
type='ResNet',
depth=50,
num_stages=4,
out_indices=(0, 1, 2, 3),
frozen_stages=-1,
norm_cfg=dict(type='BN', requires_grad=False),
norm_eval=True,
style='pytorch',
init_cfg=dict(type='Pretrained', checkpoint='torchvision://resnet50')),
panoptic_head=dict(
type='MaskFormerHead',
in_channels=[256, 512, 1024, 2048], # pass to pixel_decoder inside
feat_channels=256,
out_channels=256,
num_things_classes=num_things_classes,
num_stuff_classes=num_stuff_classes,
num_queries=100,
pixel_decoder=dict(
type='TransformerEncoderPixelDecoder',
norm_cfg=dict(type='GN', num_groups=32),
act_cfg=dict(type='ReLU'),
encoder=dict( # DetrTransformerEncoder
num_layers=6,
layer_cfg=dict( # DetrTransformerEncoderLayer
self_attn_cfg=dict( # MultiheadAttention
embed_dims=256,
num_heads=8,
dropout=0.1,
batch_first=True),
ffn_cfg=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
ffn_drop=0.1,
act_cfg=dict(type='ReLU', inplace=True)))),
positional_encoding=dict(num_feats=128, normalize=True)),
enforce_decoder_input_project=False,
positional_encoding=dict(num_feats=128, normalize=True),
transformer_decoder=dict( # DetrTransformerDecoder
num_layers=6,
layer_cfg=dict( # DetrTransformerDecoderLayer
self_attn_cfg=dict( # MultiheadAttention
embed_dims=256,
num_heads=8,
dropout=0.1,
batch_first=True),
cross_attn_cfg=dict( # MultiheadAttention
embed_dims=256,
num_heads=8,
dropout=0.1,
batch_first=True),
ffn_cfg=dict(
embed_dims=256,
feedforward_channels=2048,
num_fcs=2,
ffn_drop=0.1,
act_cfg=dict(type='ReLU', inplace=True))),
return_intermediate=True),
loss_cls=dict(
type='CrossEntropyLoss',
use_sigmoid=False,
loss_weight=1.0,
reduction='mean',
class_weight=[1.0] * num_classes + [0.1]),
loss_mask=dict(
type='FocalLoss',
use_sigmoid=True,
gamma=2.0,
alpha=0.25,
reduction='mean',
loss_weight=20.0),
loss_dice=dict(
type='DiceLoss',
use_sigmoid=True,
activate=True,
reduction='mean',
naive_dice=True,
eps=1.0,
loss_weight=1.0)),
panoptic_fusion_head=dict(
type='MaskFormerFusionHead',
num_things_classes=num_things_classes,
num_stuff_classes=num_stuff_classes,
loss_panoptic=None,
init_cfg=None),
train_cfg=dict(
assigner=dict(
type='HungarianAssigner',
match_costs=[
dict(type='ClassificationCost', weight=1.0),
dict(type='FocalLossCost', weight=20.0, binary_input=True),
dict(type='DiceCost', weight=1.0, pred_act=True, eps=1.0)
]),
sampler=dict(type='MaskPseudoSampler')),
test_cfg=dict(
panoptic_on=True,
# For now, the dataset does not support
# evaluating semantic segmentation metric.
semantic_on=False,
instance_on=False,
# max_per_image is for instance segmentation.
max_per_image=100,
object_mask_thr=0.8,
iou_thr=0.8,
# In MaskFormer's panoptic postprocessing,
# it will not filter masks whose score is smaller than 0.5 .
filter_low_score=False),
init_cfg=None)
# dataset settings
train_pipeline = [
dict(type='LoadImageFromFile'),
dict(
type='LoadPanopticAnnotations',
with_bbox=True,
with_mask=True,
with_seg=True),
dict(type='RandomFlip', prob=0.5),
dict(
type='RandomChoice',
transforms=[[
dict(
type='RandomChoiceResize',
scales=[(480, 1333), (512, 1333), (544, 1333), (576, 1333),
(608, 1333), (640, 1333), (672, 1333), (704, 1333),
(736, 1333), (768, 1333), (800, 1333)],
keep_ratio=True)
],
[
dict(
type='RandomChoiceResize',
scales=[(400, 1333), (500, 1333), (600, 1333)],
keep_ratio=True),
dict(
type='RandomCrop',
crop_type='absolute_range',
crop_size=(384, 600),
allow_negative_crop=True),
dict(
type='RandomChoiceResize',
scales=[(480, 1333), (512, 1333), (544, 1333),
(576, 1333), (608, 1333), (640, 1333),
(672, 1333), (704, 1333), (736, 1333),
(768, 1333), (800, 1333)],
keep_ratio=True)
]]),
dict(type='PackDetInputs')
]
train_dataloader = dict(
batch_size=1, num_workers=1, dataset=dict(pipeline=train_pipeline))
val_dataloader = dict(batch_size=1, num_workers=1)
test_dataloader = val_dataloader
# optimizer
optim_wrapper = dict(
type='OptimWrapper',
optimizer=dict(
type='AdamW',
lr=0.0001,
weight_decay=0.0001,
eps=1e-8,
betas=(0.9, 0.999)),
paramwise_cfg=dict(
custom_keys={
'backbone': dict(lr_mult=0.1, decay_mult=1.0),
'query_embed': dict(lr_mult=1.0, decay_mult=0.0)
},
norm_decay_mult=0.0),
clip_grad=dict(max_norm=0.01, norm_type=2))
max_epochs = 75
# learning rate
param_scheduler = dict(
type='MultiStepLR',
begin=0,
end=max_epochs,
by_epoch=True,
milestones=[50],
gamma=0.1)
train_cfg = dict(
type='EpochBasedTrainLoop', max_epochs=max_epochs, val_interval=1)
val_cfg = dict(type='ValLoop')
test_cfg = dict(type='TestLoop')
# Default setting for scaling LR automatically
# - `enable` means enable scaling LR automatically
# or not by default.
# - `base_batch_size` = (16 GPUs) x (1 samples per GPU).
auto_scale_lr = dict(enable=False, base_batch_size=16)