| 102 | |
| 103 | @MODELS.register_module() |
| 104 | class _Transformer_Decoder(nn.Module): |
| 105 | def __init__( |
| 106 | self, |
| 107 | embed_dims, |
| 108 | cross_attn_cfg=dict( |
| 109 | type='_Masked_Focal_Attention', |
| 110 | act_cfg=dict(type='GELU'), |
| 111 | norm_cfg=dict(type='LN'), |
| 112 | ), |
| 113 | num_heads=8, |
| 114 | conv_kernel_size=1, |
| 115 | with_ffn=True, |
| 116 | feedforward_channels=2048, |
| 117 | num_ffn_fcs=2, |
| 118 | dropout=0.0, |
| 119 | ffn_act_cfg=dict(type='GELU'), |
| 120 | ): |
| 121 | super().__init__() |
| 122 | self.with_ffn = with_ffn |
| 123 | |
| 124 | cross_attn_cfg['in_channels'] = embed_dims |
| 125 | cross_attn_cfg['feat_channels'] = embed_dims |
| 126 | cross_attn_cfg['out_channels'] = embed_dims |
| 127 | self.cross_attn = MODELS.build(cross_attn_cfg) |
| 128 | self.self_attn = MultiheadAttention(embed_dims * conv_kernel_size, |
| 129 | num_heads, dropout) |
| 130 | self.self_norm = build_norm_layer( |
| 131 | dict(type='LN'), embed_dims * conv_kernel_size)[1] |
| 132 | if self.with_ffn: |
| 133 | self.ffn = FFN( |
| 134 | embed_dims, |
| 135 | feedforward_channels, |
| 136 | num_ffn_fcs, |
| 137 | act_cfg=ffn_act_cfg, |
| 138 | ffn_drop=dropout) |
| 139 | self.ffn_norm = build_norm_layer(dict(type='LN'), embed_dims)[1] |
| 140 | |
| 141 | def forward_single(self, queries, features, mask_preds): |
| 142 | queries = self.cross_attn(queries, features, mask_preds) # [N,1,C] |
| 143 | queries = self.self_norm(self.self_attn(queries)) |
| 144 | queries = queries.permute(1, 0, 2) # [1,N,C] |
| 145 | if self.with_ffn: |
| 146 | queries = self.ffn_norm(self.ffn(queries)) |
| 147 | queries = queries.squeeze(0) # [N,C] |
| 148 | return queries |
| 149 | |
| 150 | def forward(self, queries, features, mask_preds): |
| 151 | """Update queries in batch level. |
| 152 | """ |
| 153 | new_queries = [] |
| 154 | for i in range(len(mask_preds)): |
| 155 | new_queries.append( |
| 156 | self.forward_single( |
| 157 | queries[i], |
| 158 | features[i], |
| 159 | mask_preds[i], |
| 160 | )) |
| 161 | return new_queries |
nothing calls this directly
no outgoing calls
no test coverage detected