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53 lines
1.7 KiB
53 lines
1.7 KiB
""" Select AttentionFactory Method
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Hacked together by / Copyright 2020 Ross Wightman
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"""
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import torch
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from .cbam import CbamModule, LightCbamModule
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from .eca import EcaModule, CecaModule
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from .gather_excite import GatherExcite
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from .global_context import GlobalContext
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from .squeeze_excite import SEModule, EffectiveSEModule
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def get_attn(attn_type):
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if isinstance(attn_type, torch.nn.Module):
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return attn_type
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module_cls = None
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if attn_type is not None:
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if isinstance(attn_type, str):
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attn_type = attn_type.lower()
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if attn_type == 'se':
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module_cls = SEModule
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elif attn_type == 'ese':
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module_cls = EffectiveSEModule
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elif attn_type == 'eca':
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module_cls = EcaModule
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elif attn_type == 'ceca':
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module_cls = CecaModule
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elif attn_type == 'ge':
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module_cls = GatherExcite
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elif attn_type == 'gc':
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module_cls = GlobalContext
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elif attn_type == 'cbam':
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module_cls = CbamModule
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elif attn_type == 'lcbam':
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module_cls = LightCbamModule
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else:
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assert False, "Invalid attn module (%s)" % attn_type
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elif isinstance(attn_type, bool):
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if attn_type:
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module_cls = SEModule
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else:
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module_cls = attn_type
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return module_cls
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def create_attn(attn_type, channels, **kwargs):
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module_cls = get_attn(attn_type)
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if module_cls is not None:
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# NOTE: it's expected the first (positional) argument of all attention layers is the # input channels
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return module_cls(channels, **kwargs)
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return None
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