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from detectron2.config import LazyCall as L
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from detectron2.layers import ShapeSpec
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from detectron2.modeling.box_regression import Box2BoxTransform
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from detectron2.modeling.matcher import Matcher
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from detectron2.modeling.roi_heads import FastRCNNOutputLayers, FastRCNNConvFCHead, CascadeROIHeads
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from .mask_rcnn_fpn import model
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[model.roi_heads.pop(k) for k in ["box_head", "box_predictor", "proposal_matcher"]]
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model.roi_heads.update(
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_target_=CascadeROIHeads,
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box_heads=[
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L(FastRCNNConvFCHead)(
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input_shape=ShapeSpec(channels=256, height=7, width=7),
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conv_dims=[],
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fc_dims=[1024, 1024],
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)
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for k in range(3)
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],
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box_predictors=[
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L(FastRCNNOutputLayers)(
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input_shape=ShapeSpec(channels=1024),
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test_score_thresh=0.05,
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box2box_transform=L(Box2BoxTransform)(weights=(w1, w1, w2, w2)),
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cls_agnostic_bbox_reg=True,
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num_classes="${...num_classes}",
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)
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for (w1, w2) in [(10, 5), (20, 10), (30, 15)]
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],
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proposal_matchers=[
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L(Matcher)(thresholds=[th], labels=[0, 1], allow_low_quality_matches=False)
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for th in [0.5, 0.6, 0.7]
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],
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)
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