From 252e3b1916cfaca0783c9e90efaa55eb07b1a8cd Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Sun, 06 Nov 2016 00:27:31 +0000
Subject: [PATCH] :charizard: :charizard: :charizard:
---
src/region_layer.c | 153 +++++++++++++++++++++++++++++++++++---------------
1 files changed, 106 insertions(+), 47 deletions(-)
diff --git a/src/region_layer.c b/src/region_layer.c
index 24d3169..2702636 100644
--- a/src/region_layer.c
+++ b/src/region_layer.c
@@ -1,6 +1,5 @@
#include "region_layer.h"
#include "activations.h"
-#include "softmax_layer.h"
#include "blas.h"
#include "box.h"
#include "cuda.h"
@@ -34,7 +33,11 @@
l.biases[i] = .5;
}
+ l.forward = forward_region_layer;
+ l.backward = backward_region_layer;
#ifdef GPU
+ l.forward_gpu = forward_region_layer_gpu;
+ l.backward_gpu = backward_region_layer_gpu;
l.output_gpu = cuda_make_array(l.output, batch*l.outputs);
l.delta_gpu = cuda_make_array(l.delta, batch*l.outputs);
#endif
@@ -45,11 +48,17 @@
return l;
}
+#define LOG 1
+
box get_region_box(float *x, float *biases, int n, int index, int i, int j, int w, int h)
{
box b;
b.x = (i + .5)/w + x[index + 0] * biases[2*n];
b.y = (j + .5)/h + x[index + 1] * biases[2*n + 1];
+ if(LOG){
+ b.x = (i + logistic_activate(x[index + 0])) / w;
+ b.y = (j + logistic_activate(x[index + 1])) / h;
+ }
b.w = exp(x[index + 2]) * biases[2*n];
b.h = exp(x[index + 3]) * biases[2*n+1];
return b;
@@ -62,11 +71,19 @@
float tx = (truth.x - (i + .5)/w) / biases[2*n];
float ty = (truth.y - (j + .5)/h) / biases[2*n + 1];
+ if(LOG){
+ tx = (truth.x*w - i);
+ ty = (truth.y*h - j);
+ }
float tw = log(truth.w / biases[2*n]);
float th = log(truth.h / biases[2*n + 1]);
delta[index + 0] = scale * (tx - x[index + 0]);
delta[index + 1] = scale * (ty - x[index + 1]);
+ if(LOG){
+ delta[index + 0] = scale * (tx - logistic_activate(x[index + 0])) * logistic_gradient(logistic_activate(x[index + 0]));
+ delta[index + 1] = scale * (ty - logistic_activate(x[index + 1])) * logistic_gradient(logistic_activate(x[index + 1]));
+ }
delta[index + 2] = scale * (tw - x[index + 2]);
delta[index + 3] = scale * (th - x[index + 3]);
return iou;
@@ -82,8 +99,7 @@
return (x != x);
}
-#define LOG 0
-
+void softmax_tree(float *input, int batch, int inputs, float temp, tree *hierarchy, float *output);
void forward_region_layer(const region_layer l, network_state state)
{
int i,j,b,t,n;
@@ -94,8 +110,10 @@
for(i = 0; i < l.h*l.w*l.n; ++i){
int index = size*i + b*l.outputs;
l.output[index + 4] = logistic_activate(l.output[index + 4]);
- if(l.softmax){
- softmax_array(l.output + index + 5, l.classes, 1, l.output + index + 5);
+ if(l.softmax_tree){
+ softmax_tree(l.output + index + 5, 1, 0, 1, l.softmax_tree, l.output + index + 5);
+ } else if(l.softmax){
+ softmax(l.output + index + 5, l.classes, 1, l.output + index + 5);
}
}
}
@@ -123,14 +141,14 @@
}
avg_anyobj += l.output[index + 4];
l.delta[index + 4] = l.noobject_scale * ((0 - l.output[index + 4]) * logistic_gradient(l.output[index + 4]));
- if(best_iou > .5) l.delta[index + 4] = 0;
+ if(best_iou > l.thresh) l.delta[index + 4] = 0;
- if(*(state.net.seen) < 6400){
+ if(*(state.net.seen) < 12800){
box truth = {0};
truth.x = (i + .5)/l.w;
truth.y = (j + .5)/l.h;
- truth.w = .5;
- truth.h = .5;
+ truth.w = l.biases[2*n];
+ truth.h = l.biases[2*n+1];
delta_region_box(truth, l.output, l.biases, n, index, i, j, l.w, l.h, l.delta, .01);
//l.delta[index + 0] = .1 * (0 - l.output[index + 0]);
//l.delta[index + 1] = .1 * (0 - l.output[index + 1]);
@@ -142,7 +160,7 @@
}
for(t = 0; t < 30; ++t){
box truth = float_to_box(state.truth + t*5 + b*l.truths);
- int class = state.truth[t*5 + b*l.truths + 4];
+
if(!truth.x) break;
float best_iou = 0;
int best_index = 0;
@@ -153,11 +171,15 @@
box truth_shift = truth;
truth_shift.x = 0;
truth_shift.y = 0;
- printf("index %d %d\n",i, j);
+ //printf("index %d %d\n",i, j);
for(n = 0; n < l.n; ++n){
int index = size*(j*l.w*l.n + i*l.n + n) + b*l.outputs;
box pred = get_region_box(l.output, l.biases, n, index, i, j, l.w, l.h);
- printf("pred: (%f, %f) %f x %f\n", pred.x*l.w - i - .5, pred.y * l.h - j - .5, pred.w, pred.h);
+ if(l.bias_match){
+ pred.w = l.biases[2*n];
+ pred.h = l.biases[2*n+1];
+ }
+ //printf("pred: (%f, %f) %f x %f\n", pred.x, pred.y, pred.w, pred.h);
pred.x = 0;
pred.y = 0;
float iou = box_iou(pred, truth_shift);
@@ -167,7 +189,7 @@
best_n = n;
}
}
- printf("%d %f (%f, %f) %f x %f\n", best_n, best_iou, truth.x * l.w - i - .5, truth.y*l.h - j - .5, truth.w, truth.h);
+ //printf("%d %f (%f, %f) %f x %f\n", best_n, best_iou, truth.x, truth.y, truth.w, truth.h);
float iou = delta_region_box(truth, l.output, l.biases, best_n, best_index, i, j, l.w, l.h, l.delta, l.coord_scale);
if(iou > .5) recall += 1;
@@ -179,45 +201,36 @@
if (l.rescore) {
l.delta[best_index + 4] = l.object_scale * (iou - l.output[best_index + 4]) * logistic_gradient(l.output[best_index + 4]);
}
- //printf("%f\n", l.delta[best_index+1]);
- /*
- if(isnan(l.delta[best_index+1])){
- printf("%f\n", true_scale);
- printf("%f\n", l.output[best_index + 1]);
- printf("%f\n", truth.w);
- printf("%f\n", truth.h);
- error("bad");
- }
- */
- for(n = 0; n < l.classes; ++n){
- l.delta[best_index + 5 + n] = l.class_scale * (((n == class)?1 : 0) - l.output[best_index + 5 + n]);
- if(n == class) avg_cat += l.output[best_index + 5 + n];
- }
- /*
- if(0){
- printf("truth: %f %f %f %f\n", truth.x, truth.y, truth.w, truth.h);
- printf("pred: %f %f %f %f\n\n", pred.x, pred.y, pred.w, pred.h);
- float aspect = exp(true_aspect);
- float scale = logistic_activate(true_scale);
- float move_x = true_dx;
- float move_y = true_dy;
- box b;
- b.w = sqrt(scale * aspect);
- b.h = b.w * 1./aspect;
- b.x = move_x * b.w + (i + .5)/l.w;
- b.y = move_y * b.h + (j + .5)/l.h;
- printf("%f %f\n", b.x, truth.x);
- printf("%f %f\n", b.y, truth.y);
- printf("%f %f\n", b.w, truth.w);
- printf("%f %f\n", b.h, truth.h);
- //printf("%f\n", box_iou(b, truth));
+
+ int class = state.truth[t*5 + b*l.truths + 4];
+ if (l.map) class = l.map[class];
+ if(l.softmax_tree){
+ float pred = 1;
+ while(class >= 0){
+ pred *= l.output[best_index + 5 + class];
+ int g = l.softmax_tree->group[class];
+ int i;
+ int offset = l.softmax_tree->group_offset[g];
+ for(i = 0; i < l.softmax_tree->group_size[g]; ++i){
+ int index = best_index + 5 + offset + i;
+ l.delta[index] = l.class_scale * (0 - l.output[index]);
+ }
+ l.delta[best_index + 5 + class] = l.class_scale * (1 - l.output[best_index + 5 + class]);
+
+ class = l.softmax_tree->parent[class];
+ }
+ avg_cat += pred;
+ } else {
+ for(n = 0; n < l.classes; ++n){
+ l.delta[best_index + 5 + n] = l.class_scale * (((n == class)?1 : 0) - l.output[best_index + 5 + n]);
+ if(n == class) avg_cat += l.output[best_index + 5 + n];
+ }
}
- */
++count;
}
}
- printf("\n");
+ //printf("\n");
reorg(l.delta, l.w*l.h, size*l.n, l.batch, 0);
*(l.cost) = pow(mag_array(l.delta, l.outputs * l.batch), 2);
printf("Region Avg IOU: %f, Class: %f, Obj: %f, No Obj: %f, Avg Recall: %f, count: %d\n", avg_iou/count, avg_cat/count, avg_obj/count, avg_anyobj/(l.w*l.h*l.n*l.batch), recall/count, count);
@@ -228,6 +241,52 @@
axpy_cpu(l.batch*l.inputs, 1, l.delta, 1, state.delta, 1);
}
+void get_region_boxes(layer l, int w, int h, float thresh, float **probs, box *boxes, int only_objectness)
+{
+ int i,j,n;
+ float *predictions = l.output;
+ //int per_cell = 5*num+classes;
+ for (i = 0; i < l.w*l.h; ++i){
+ int row = i / l.w;
+ int col = i % l.w;
+ for(n = 0; n < l.n; ++n){
+ int index = i*l.n + n;
+ int p_index = index * (l.classes + 5) + 4;
+ float scale = predictions[p_index];
+ int box_index = index * (l.classes + 5);
+ boxes[index] = get_region_box(predictions, l.biases, n, box_index, col, row, l.w, l.h);
+ boxes[index].x *= w;
+ boxes[index].y *= h;
+ boxes[index].w *= w;
+ boxes[index].h *= h;
+
+ int class_index = index * (l.classes + 5) + 5;
+ if(l.softmax_tree){
+
+ hierarchy_predictions(predictions + class_index, l.classes, l.softmax_tree, 0);
+ int found = 0;
+ for(j = l.classes - 1; j >= 0; --j){
+ if(!found && predictions[class_index + j] > .5){
+ found = 1;
+ } else {
+ predictions[class_index + j] = 0;
+ }
+ float prob = predictions[class_index+j];
+ probs[index][j] = (scale > thresh) ? prob : 0;
+ }
+ }else{
+ for(j = 0; j < l.classes; ++j){
+ float prob = scale*predictions[class_index+j];
+ probs[index][j] = (prob > thresh) ? prob : 0;
+ }
+ }
+ if(only_objectness){
+ probs[index][0] = scale;
+ }
+ }
+ }
+}
+
#ifdef GPU
void forward_region_layer_gpu(const region_layer l, network_state state)
--
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