architecture: CascadeRCNN
train_feed: FasterRCNNTrainFeed
eval_feed: FasterRCNNEvalFeed
test_feed: FasterRCNNTestFeed
max_iters: 500000
snapshot_iter: 10000
use_gpu: true
log_iter: 20
log_smooth_window: 20
save_dir: output
pretrain_weights: https://paddlemodels.bj.bcebos.com/object_detection/cascade_mask_rcnn_dcnv2_se154_vd_fpn_gn_coco_pretrained.tar
weights: output/cascade_rcnn_dcnv2_se154_vd_fpn_gn_cas/model_final
metric: COCO
num_classes: 81

CascadeRCNN:
  backbone: ResNet
  fpn: FPN
  rpn_head: FPNRPNHead
  roi_extractor: FPNRoIAlign
  bbox_head: CascadeBBoxHead
  bbox_assigner: CascadeBBoxAssigner

SENet:
  depth: 152
  feature_maps: [2, 3, 4, 5]
  freeze_at: 2
  group_width: 4
  groups: 64
  norm_type: bn
  freeze_norm: True
  variant: d
  dcn_v2_stages: [3, 4, 5]
  std_senet: True

FPN:
  min_level: 2
  max_level: 6
  num_chan: 256
  spatial_scale: [0.03125, 0.0625, 0.125, 0.25]
  freeze_norm: False
  norm_type: gn

FPNRPNHead:
  anchor_generator:
    anchor_sizes: [32, 64, 128, 256, 512]
    aspect_ratios: [0.5, 1.0, 2.0]
    stride: [16.0, 16.0]
    variance: [1.0, 1.0, 1.0, 1.0]
  anchor_start_size: 32
  min_level: 2
  max_level: 6
  num_chan: 256
  rpn_target_assign:
    rpn_batch_size_per_im: 256
    rpn_fg_fraction: 0.5
    rpn_positive_overlap: 0.7
    rpn_negative_overlap: 0.3
    rpn_straddle_thresh: 0.0
  train_proposal:
    min_size: 0.0
    nms_thresh: 0.7
    pre_nms_top_n: 2000
    post_nms_top_n: 2000
  test_proposal:
    min_size: 0.0
    nms_thresh: 0.7
    pre_nms_top_n: 1000
    post_nms_top_n: 1000

FPNRoIAlign:
  canconical_level: 4
  canonical_size: 224
  min_level: 2
  max_level: 5
  box_resolution: 7
  sampling_ratio: 2

CascadeBBoxAssigner:
  batch_size_per_im: 1024
  bbox_reg_weights: [10, 20, 30]
  bg_thresh_lo: [0.0, 0.0, 0.0]
  bg_thresh_hi: [0.5, 0.6, 0.7]
  fg_thresh: [0.5, 0.6, 0.7]
  fg_fraction: 0.25

CascadeBBoxHead:
  head: CascadeXConvNormHead 
  nms:
    keep_top_k: 100
    nms_threshold: 0.5
    score_threshold: 0.05

CascadeXConvNormHead:
  norm_type: gn

CascadeTwoFCHead:
  mlp_dim: 1024

LearningRate:
  base_lr: 0.01
  schedulers:
  - !PiecewiseDecay
    gamma: 0.1
    milestones: [400000, 460000]
  - !LinearWarmup
    start_factor: 0.01
    steps: 2000

OptimizerBuilder:
  optimizer:
    momentum: 0.9
    type: Momentum
  regularizer:
    factor: 0.0001
    type: L2

FasterRCNNTrainFeed:
  batch_size: 1
  dataset:
    dataset_dir: dataset/objects365
    annotation: annotations/train.json
    image_dir: train
  sample_transforms: 
  - !DecodeImage
    to_rgb: False
    with_mixup: False
  - !RandomFlipImage
    is_mask_flip: true
    is_normalized: false
    prob: 0.5
  - !NormalizeImage
    is_channel_first: false
    is_scale: False
    mean:
    - 102.9801 
    - 115.9465
    - 122.7717
    std:
    - 1.0 
    - 1.0 
    - 1.0 
  - !ResizeImage
    interp: 1
    target_size:
    - 416
    - 448
    - 480
    - 512
    - 544
    - 576
    - 608
    - 640
    - 672
    - 704 
    - 736
    - 768
    - 800
    - 832
    - 864
    - 896
    - 928
    - 960
    - 992
    - 1024
    - 1056
    - 1088
    - 1120
    - 1152
    - 1184
    - 1216
    - 1248
    - 1280
    - 1312
    - 1344
    - 1376
    - 1408
    max_size: 1600
    use_cv2: true
  - !Permute
    channel_first: true
    to_bgr: false
  batch_transforms:
  - !PadBatch
    pad_to_stride: 32
  num_workers: 4
  class_aware_sampling: true

FasterRCNNEvalFeed:
  batch_size: 1
  dataset:
    dataset_dir: dataset/objects365
    annotation: annotations/val.json
    image_dir: val
  sample_transforms: 
  - !DecodeImage
    to_rgb: False
    with_mixup: False
  - !NormalizeImage
    is_channel_first: false
    is_scale: False
    mean:
    - 102.9801 
    - 115.9465
    - 122.7717
    std:
    - 1.0 
    - 1.0 
    - 1.0 
  - !ResizeImage
    target_size: 800
    max_size: 1333
    interp: 1
  - !Permute
    channel_first: true
    to_bgr: false
  batch_transforms:
  - !PadBatch
    pad_to_stride: 32

FasterRCNNTestFeed:
  batch_size: 1
  dataset:
    annotation: dataset/obj365/annotations/val.json
  sample_transforms: 
  - !DecodeImage
    to_rgb: False
    with_mixup: False
  - !NormalizeImage
    is_channel_first: false
    is_scale: False
    mean:
    - 102.9801 
    - 115.9465
    - 122.7717
    std:
    - 1.0 
    - 1.0 
    - 1.0 
  - !Permute
    channel_first: true
    to_bgr: false
  batch_transforms:
  - !PadBatch
    pad_to_stride: 32
  drop_last: false
  num_workers: 2
