solo_r50_fpn_1x_coco.py
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_base_ = [
'../_base_/datasets/coco_instance.py',
'../_base_/schedules/schedule_1x.py', '../_base_/default_runtime.py'
]
# model settings
model = dict(
type='SOLO',
backbone=dict(
type='ResNet',
depth=50,
num_stages=4,
out_indices=(0, 1, 2, 3),
frozen_stages=1,
init_cfg=dict(type='Pretrained', checkpoint='torchvision://resnet50'),
style='pytorch'),
neck=dict(
type='FPN',
in_channels=[256, 512, 1024, 2048],
out_channels=256,
start_level=0,
num_outs=5),
mask_head=dict(
type='SOLOHead',
num_classes=80,
in_channels=256,
stacked_convs=7,
feat_channels=256,
strides=[8, 8, 16, 32, 32],
scale_ranges=((1, 96), (48, 192), (96, 384), (192, 768), (384, 2048)),
pos_scale=0.2,
num_grids=[40, 36, 24, 16, 12],
cls_down_index=0,
loss_mask=dict(type='DiceLoss', use_sigmoid=True, loss_weight=3.0),
loss_cls=dict(
type='FocalLoss',
use_sigmoid=True,
gamma=2.0,
alpha=0.25,
loss_weight=1.0),
norm_cfg=dict(type='GN', num_groups=32, requires_grad=True)),
# model training and testing settings
test_cfg=dict(
nms_pre=500,
score_thr=0.1,
mask_thr=0.5,
filter_thr=0.05,
kernel='gaussian', # gaussian/linear
sigma=2.0,
max_per_img=100))
# optimizer
optimizer = dict(type='SGD', lr=0.01)