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🔥 🔥 yolo v2 🔥 🔥

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This commit is contained in:
Joseph Redmon
2016-11-17 12:18:19 -08:00
parent c71bff69ea
commit c6afc7ff14
24 changed files with 761 additions and 173 deletions
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44
src/reorg_layer.c
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@ -23,7 +23,7 @@ layer make_reorg_layer(int batch, int h, int w, int c, int stride, int reverse)
l.out_c = c*(stride*stride);
}
l.reverse = reverse;
fprintf(stderr, "Reorg Layer: %d x %d x %d image -> %d x %d x %d image, \n", w,h,c,l.out_w, l.out_h, l.out_c);
fprintf(stderr, "reorg /%2d %4d x%4d x%4d -> %4d x%4d x%4d\n", stride, w, h, c, l.out_w, l.out_h, l.out_c);
l.outputs = l.out_h * l.out_w * l.out_c;
l.inputs = h*w*c;
int output_size = l.out_h * l.out_w * l.out_c * batch;
@ -77,45 +77,19 @@ void resize_reorg_layer(layer *l, int w, int h)
void forward_reorg_layer(const layer l, network_state state)
{
int b,i,j,k;
for(b = 0; b < l.batch; ++b){
for(k = 0; k < l.c; ++k){
for(j = 0; j < l.h; ++j){
for(i = 0; i < l.w; ++i){
int in_index = i + l.w*(j + l.h*(k + l.c*b));
int c2 = k % l.out_c;
int offset = k / l.out_c;
int w2 = i*l.stride + offset % l.stride;
int h2 = j*l.stride + offset / l.stride;
int out_index = w2 + l.out_w*(h2 + l.out_h*(c2 + l.out_c*b));
l.output[out_index] = state.input[in_index];
}
}
}
if(l.reverse){
reorg_cpu(state.input, l.w, l.h, l.c, l.batch, l.stride, 1, l.output);
}else {
reorg_cpu(state.input, l.w, l.h, l.c, l.batch, l.stride, 0, l.output);
}
}
void backward_reorg_layer(const layer l, network_state state)
{
int b,i,j,k;
for(b = 0; b < l.batch; ++b){
for(k = 0; k < l.c; ++k){
for(j = 0; j < l.h; ++j){
for(i = 0; i < l.w; ++i){
int in_index = i + l.w*(j + l.h*(k + l.c*b));
int c2 = k % l.out_c;
int offset = k / l.out_c;
int w2 = i*l.stride + offset % l.stride;
int h2 = j*l.stride + offset / l.stride;
int out_index = w2 + l.out_w*(h2 + l.out_h*(c2 + l.out_c*b));
state.delta[in_index] = l.delta[out_index];
}
}
}
if(l.reverse){
reorg_cpu(l.delta, l.w, l.h, l.c, l.batch, l.stride, 0, state.delta);
}else{
reorg_cpu(l.delta, l.w, l.h, l.c, l.batch, l.stride, 1, state.delta);
}
}