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IDM-VTON
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# Copyright (c) Facebook, Inc. and its affiliates.
from detectron2.layers import ShapeSpec
from detectron2.utils.registry import Registry
from .backbone import Backbone
BACKBONE_REGISTRY = Registry("BACKBONE")
BACKBONE_REGISTRY.__doc__ = """
Registry for backbones, which extract feature maps from images
The registered object must be a callable that accepts two arguments:
1. A :class:`detectron2.config.CfgNode`
2. A :class:`detectron2.layers.ShapeSpec`, which contains the input shape specification.
Registered object must return instance of :class:`Backbone`.
"""
def build_backbone(cfg, input_shape=None):
"""
Build a backbone from `cfg.MODEL.BACKBONE.NAME`.
Returns:
an instance of :class:`Backbone`
"""
if input_shape is None:
input_shape = ShapeSpec(channels=len(cfg.MODEL.PIXEL_MEAN))
backbone_name = cfg.MODEL.BACKBONE.NAME
backbone = BACKBONE_REGISTRY.get(backbone_name)(cfg, input_shape)
assert isinstance(backbone, Backbone)
return backbone