Caffe
concat_layer.hpp
1 #ifndef CAFFE_CONCAT_LAYER_HPP_
2 #define CAFFE_CONCAT_LAYER_HPP_
3 
4 #include <vector>
5 
6 #include "caffe/blob.hpp"
7 #include "caffe/layer.hpp"
8 #include "caffe/proto/caffe.pb.h"
9 
10 namespace caffe {
11 
16 template <typename Dtype>
17 class ConcatLayer : public Layer<Dtype> {
18  public:
19  explicit ConcatLayer(const LayerParameter& param)
20  : Layer<Dtype>(param) {}
21  virtual void LayerSetUp(const vector<Blob<Dtype>*>& bottom,
22  const vector<Blob<Dtype>*>& top);
23  virtual void Reshape(const vector<Blob<Dtype>*>& bottom,
24  const vector<Blob<Dtype>*>& top);
25 
26  virtual inline const char* type() const { return "Concat"; }
27  virtual inline int MinBottomBlobs() const { return 1; }
28  virtual inline int ExactNumTopBlobs() const { return 1; }
29 
30  protected:
47  virtual void Forward_cpu(const vector<Blob<Dtype>*>& bottom,
48  const vector<Blob<Dtype>*>& top);
49  virtual void Forward_gpu(const vector<Blob<Dtype>*>& bottom,
50  const vector<Blob<Dtype>*>& top);
51 
74  virtual void Backward_cpu(const vector<Blob<Dtype>*>& top,
75  const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom);
76  virtual void Backward_gpu(const vector<Blob<Dtype>*>& top,
77  const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom);
78 
79  int count_;
80  int num_concats_;
81  int concat_input_size_;
82  int concat_axis_;
83 };
84 
85 } // namespace caffe
86 
87 #endif // CAFFE_CONCAT_LAYER_HPP_
An interface for the units of computation which can be composed into a Net.
Definition: layer.hpp:33
A layer factory that allows one to register layers. During runtime, registered layers can be called b...
Definition: blob.hpp:14
virtual void Forward_cpu(const vector< Blob< Dtype > *> &bottom, const vector< Blob< Dtype > *> &top)
Definition: concat_layer.cpp:57
virtual void Backward_cpu(const vector< Blob< Dtype > *> &top, const vector< bool > &propagate_down, const vector< Blob< Dtype > *> &bottom)
Computes the error gradient w.r.t. the concatenate inputs.
Definition: concat_layer.cpp:77
virtual void Backward_gpu(const vector< Blob< Dtype > *> &top, const vector< bool > &propagate_down, const vector< Blob< Dtype > *> &bottom)
Using the GPU device, compute the gradients for any parameters and for the bottom blobs if propagate_...
virtual int ExactNumTopBlobs() const
Returns the exact number of top blobs required by the layer, or -1 if no exact number is required...
Definition: concat_layer.hpp:28
virtual const char * type() const
Returns the layer type.
Definition: concat_layer.hpp:26
virtual void Forward_gpu(const vector< Blob< Dtype > *> &bottom, const vector< Blob< Dtype > *> &top)
Using the GPU device, compute the layer output. Fall back to Forward_cpu() if unavailable.
virtual int MinBottomBlobs() const
Returns the minimum number of bottom blobs required by the layer, or -1 if no minimum number is requi...
Definition: concat_layer.hpp:27
virtual void Reshape(const vector< Blob< Dtype > *> &bottom, const vector< Blob< Dtype > *> &top)
Adjust the shapes of top blobs and internal buffers to accommodate the shapes of the bottom blobs...
Definition: concat_layer.cpp:17
virtual void LayerSetUp(const vector< Blob< Dtype > *> &bottom, const vector< Blob< Dtype > *> &top)
Does layer-specific setup: your layer should implement this function as well as Reshape.
Definition: concat_layer.cpp:9
Takes at least two Blobs and concatenates them along either the num or channel dimension, outputting the result.
Definition: concat_layer.hpp:17
A wrapper around SyncedMemory holders serving as the basic computational unit through which Layers...
Definition: blob.hpp:24