1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
#include <vector>
#include "caffe/common.hpp"
#include "caffe/layer.hpp"
#include "caffe/util/im2col.hpp"
#include "caffe/vision_layers.hpp"
namespace caffe {
template <typename Dtype>
void Im2colLayer<Dtype>::Forward_gpu(const vector<Blob<Dtype>*>& bottom,
const vector<Blob<Dtype>*>& top) {
const Dtype* bottom_data = bottom[0]->gpu_data();
Dtype* top_data = top[0]->mutable_gpu_data();
for (int n = 0; n < bottom[0]->num(); ++n) {
im2col_gpu(bottom_data + bottom[0]->offset(n), channels_, height_,
width_, kernel_h_, kernel_w_, pad_h_, pad_w_,
stride_h_, stride_w_, top_data + top[0]->offset(n));
}
}
template <typename Dtype>
void Im2colLayer<Dtype>::Backward_gpu(const vector<Blob<Dtype>*>& top,
const vector<bool>& propagate_down, const vector<Blob<Dtype>*>& bottom) {
const Dtype* top_diff = top[0]->gpu_diff();
Dtype* bottom_diff = bottom[0]->mutable_gpu_diff();
for (int n = 0; n < top[0]->num(); ++n) {
col2im_gpu(top_diff + top[0]->offset(n), channels_, height_, width_,
kernel_h_, kernel_w_, pad_h_, pad_w_,
stride_h_, stride_w_, bottom_diff + bottom[0]->offset(n));
}
}
INSTANTIATE_CLASS(Im2colLayer);
} // namespace caffe
|
