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Joseph Redmon
2013-11-04 11:11:01 -08:00
commit 41bcfac86f
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src/maxpool_layer.c Normal file
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#include "maxpool_layer.h"
maxpool_layer make_maxpool_layer(int h, int w, int c, int stride)
{
maxpool_layer layer;
layer.stride = stride;
layer.output = make_image((h-1)/stride+1, (w-1)/stride+1, c);
return layer;
}
void run_maxpool_layer(const image input, const maxpool_layer layer)
{
int i,j,k;
for(i = 0; i < layer.output.h*layer.output.w*layer.output.c; ++i) layer.output.data[i] = -DBL_MAX;
for(i = 0; i < input.h; ++i){
for(j = 0; j < input.w; ++j){
for(k = 0; k < input.c; ++k){
double val = get_pixel(input, i, j, k);
double cur = get_pixel(layer.output, i/layer.stride, j/layer.stride, k);
if(val > cur) set_pixel(layer.output, i/layer.stride, j/layer.stride, k, val);
}
}
}
}