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MMOCR
File size: 1,286 Bytes 
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img_norm_cfg = dict(mean=[0.5, 0.5, 0.5], std=[0.5, 0.5, 0.5])
train_pipeline = [
    dict(type='LoadImageFromFile'),
    dict(
        type='ResizeOCR',
        height=48,
        min_width=48,
        max_width=160,
        keep_aspect_ratio=True,
        width_downsample_ratio=0.25),
    dict(type='ToTensorOCR'),
    dict(type='NormalizeOCR', **img_norm_cfg),
    dict(
        type='Collect',
        keys=['img'],
        meta_keys=[
            'filename', 'ori_shape', 'resize_shape', 'text', 'valid_ratio'
        ]),
]
test_pipeline = [
    dict(type='LoadImageFromFile'),
    dict(
        type='MultiRotateAugOCR',
        rotate_degrees=[0, 90, 270],
        transforms=[
            dict(
                type='ResizeOCR',
                height=48,
                min_width=48,
                max_width=160,
                keep_aspect_ratio=True,
                width_downsample_ratio=0.25),
            dict(type='ToTensorOCR'),
            dict(type='NormalizeOCR', **img_norm_cfg),
            dict(
                type='Collect',
                keys=['img'],
                meta_keys=[
                    'filename', 'ori_shape', 'resize_shape', 'valid_ratio',
                    'img_norm_cfg', 'ori_filename', 'img_shape'
                ]),
        ])
]