Caffe Prototxt 特殊层系列：Concat Layer

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Concat Layer将多个bottom按照需要联结一个top

一般特点是：多个输入一个输出，多个输入除了axis指定维度外，其他维度要求一致

message ConcatParameter {// The axis along which to concatenate -- may be negative to index from the// end (e.g., -1 for the last axis).  Other axes must have the// same dimension for all the bottom blobs.// By default, ConcatLayer concatenates blobs along the "channels" axis (1).  //默认按通道联结optional int32 axis = 2 [default = 1];// DEPRECATED: alias for "axis" -- does not support negative indexing.optional uint32 concat_dim = 1 [default = 1];
}

Concat Layer在prototxt里面的书写：

layer {name: "concat"bottom: "in1"    #N*32*H*Wbottom: "in2"    #N*16*H*Wtop: "out"       #N*48*H*Wtype: "Concat"concat_param {axis: 1//default = 1 按通道联结}
}

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