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        "num_stages": 4,
        "out_indices": [
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            2,
            3
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        "frozen_stages": 1,
        "norm_cfg": {
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        },
        "norm_eval": true,
        "style": "pytorch",
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        ],
        "out_channels": 256,
        "num_outs": 5
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        "anchor_generator": {
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            "scales": [
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            "ratios": [
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            "strides": [
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                32,
                64
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        },
        "bbox_coder": {
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            "target_means": [
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                0.0,
                0.0
            ],
            "target_stds": [
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                1.0,
                1.0,
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        },
        "loss_cls": {
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            "loss_weight": 1.0
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        "loss_bbox": {
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    },
    "roi_head": {
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        "bbox_roi_extractor": {
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            "roi_layer": {
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                "sampling_ratio": 0
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                "loss_weight": 1.0
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                "sampling_ratio": 0
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        "mask_head": {
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            "conv_out_channels": 256,
            "num_classes": 80,
            "loss_mask": {
                "type": "CrossEntropyLoss",
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                "loss_weight": 1.0
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    "train_cfg": {
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                "ignore_iof_thr": -1
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        "rpn_proposal": {
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}