yolov3_mobilenetv2_8xb24-320-300e_coco.py

_base_ = ['./yolov3_mobilenetv2_8xb24-ms-416-300e_coco.py']

# yapf:disable
model = dict(
    bbox_head=dict(
        anchor_generator=dict(
            base_sizes=[[(220, 125), (128, 222), (264, 266)],
                        [(35, 87), (102, 96), (60, 170)],
                        [(10, 15), (24, 36), (72, 42)]])))
# yapf:enable

# file_client_args = dict(
#     backend='petrel',
#     path_mapping=dict({
#         './data/': 's3://openmmlab/datasets/detection/',
#         'data/': 's3://openmmlab/datasets/detection/'
#     }))
file_client_args = dict(backend='disk')

input_size = (320, 320)
train_pipeline = [
    dict(type='LoadImageFromFile', file_client_args=file_client_args),
    dict(type='LoadAnnotations', with_bbox=True),
    # `mean` and `to_rgb` should be the same with the `preprocess_cfg`
    dict(
        type='Expand',
        mean=[123.675, 116.28, 103.53],
        to_rgb=True,
        ratio_range=(1, 2)),
    dict(
        type='MinIoURandomCrop',
        min_ious=(0.4, 0.5, 0.6, 0.7, 0.8, 0.9),
        min_crop_size=0.3),
    dict(type='Resize', scale=input_size, keep_ratio=True),
    dict(type='RandomFlip', prob=0.5),
    dict(type='PhotoMetricDistortion'),
    dict(type='PackDetInputs')
]
test_pipeline = [
    dict(type='LoadImageFromFile', file_client_args=file_client_args),
    dict(type='Resize', scale=input_size, keep_ratio=True),
    dict(type='LoadAnnotations', with_bbox=True),
    dict(
        type='PackDetInputs',
        meta_keys=('img_id', 'img_path', 'ori_shape', 'img_shape',
                   'scale_factor'))
]
train_dataloader = dict(dataset=dict(dataset=dict(pipeline=train_pipeline)))
val_dataloader = dict(dataset=dict(pipeline=test_pipeline))
test_dataloader = val_dataloader