| | |
| | | #include "region_layer.h"
|
| | | #include "activations.h"
|
| | | #include "blas.h"
|
| | | #include "box.h"
|
| | | #include "dark_cuda.h"
|
| | | #include "utils.h"
|
| | | #include <stdio.h>
|
| | | #include <assert.h>
|
| | | #include <string.h>
|
| | | #include <stdlib.h>
|
| | |
|
| | | #define DOABS 1
|
| | |
|
| | | region_layer make_region_layer(int batch, int w, int h, int n, int classes, int coords, int max_boxes)
|
| | | {
|
| | | region_layer l = { (LAYER_TYPE)0 };
|
| | | l.type = REGION;
|
| | |
|
| | | l.n = n;
|
| | | l.batch = batch;
|
| | | l.h = h;
|
| | | l.w = w;
|
| | | l.classes = classes;
|
| | | l.coords = coords;
|
| | | l.cost = (float*)xcalloc(1, sizeof(float));
|
| | | l.biases = (float*)xcalloc(n * 2, sizeof(float));
|
| | | l.bias_updates = (float*)xcalloc(n * 2, sizeof(float));
|
| | | l.outputs = h*w*n*(classes + coords + 1);
|
| | | l.inputs = l.outputs;
|
| | | l.max_boxes = max_boxes;
|
| | | l.truths = max_boxes*(5);
|
| | | l.delta = (float*)xcalloc(batch * l.outputs, sizeof(float));
|
| | | l.output = (float*)xcalloc(batch * l.outputs, sizeof(float));
|
| | | int i;
|
| | | for(i = 0; i < n*2; ++i){
|
| | | 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
|
| | |
|
| | | fprintf(stderr, "detection\n");
|
| | | srand(time(0));
|
| | |
|
| | | return l;
|
| | | }
|
| | |
|
| | | void resize_region_layer(layer *l, int w, int h)
|
| | | {
|
| | | #ifdef GPU
|
| | | int old_w = l->w;
|
| | | int old_h = l->h;
|
| | | #endif
|
| | | l->w = w;
|
| | | l->h = h;
|
| | |
|
| | | l->outputs = h*w*l->n*(l->classes + l->coords + 1);
|
| | | l->inputs = l->outputs;
|
| | |
|
| | | l->output = (float*)xrealloc(l->output, l->batch * l->outputs * sizeof(float));
|
| | | l->delta = (float*)xrealloc(l->delta, l->batch * l->outputs * sizeof(float));
|
| | |
|
| | | #ifdef GPU
|
| | | //if (old_w < w || old_h < h)
|
| | | {
|
| | | cuda_free(l->delta_gpu);
|
| | | cuda_free(l->output_gpu);
|
| | |
|
| | | l->delta_gpu = cuda_make_array(l->delta, l->batch*l->outputs);
|
| | | l->output_gpu = cuda_make_array(l->output, l->batch*l->outputs);
|
| | | }
|
| | | #endif
|
| | | }
|
| | |
|
| | | 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 + 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];
|
| | | if(DOABS){
|
| | | b.w = exp(x[index + 2]) * biases[2*n] / w;
|
| | | b.h = exp(x[index + 3]) * biases[2*n+1] / h;
|
| | | }
|
| | | return b;
|
| | | }
|
| | |
|
| | | float delta_region_box(box truth, float *x, float *biases, int n, int index, int i, int j, int w, int h, float *delta, float scale)
|
| | | {
|
| | | box pred = get_region_box(x, biases, n, index, i, j, w, h);
|
| | | float iou = box_iou(pred, truth);
|
| | |
|
| | | float tx = (truth.x*w - i);
|
| | | float ty = (truth.y*h - j);
|
| | | float tw = log(truth.w / biases[2*n]);
|
| | | float th = log(truth.h / biases[2*n + 1]);
|
| | | if(DOABS){
|
| | | tw = log(truth.w*w / biases[2*n]);
|
| | | th = log(truth.h*h / biases[2*n + 1]);
|
| | | }
|
| | |
|
| | | 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;
|
| | | }
|
| | |
|
| | | void delta_region_class(float *output, float *delta, int index, int class_id, int classes, tree *hier, float scale, float *avg_cat, int focal_loss)
|
| | | {
|
| | | int i, n;
|
| | | if(hier){
|
| | | float pred = 1;
|
| | | while(class_id >= 0){
|
| | | pred *= output[index + class_id];
|
| | | int g = hier->group[class_id];
|
| | | int offset = hier->group_offset[g];
|
| | | for(i = 0; i < hier->group_size[g]; ++i){
|
| | | delta[index + offset + i] = scale * (0 - output[index + offset + i]);
|
| | | }
|
| | | delta[index + class_id] = scale * (1 - output[index + class_id]);
|
| | |
|
| | | class_id = hier->parent[class_id];
|
| | | }
|
| | | *avg_cat += pred;
|
| | | } else {
|
| | | // Focal loss
|
| | | if (focal_loss) {
|
| | | // Focal Loss
|
| | | float alpha = 0.5; // 0.25 or 0.5
|
| | | //float gamma = 2; // hardcoded in many places of the grad-formula
|
| | |
|
| | | int ti = index + class_id;
|
| | | float pt = output[ti] + 0.000000000000001F;
|
| | | // http://fooplot.com/#W3sidHlwZSI6MCwiZXEiOiItKDEteCkqKDIqeCpsb2coeCkreC0xKSIsImNvbG9yIjoiIzAwMDAwMCJ9LHsidHlwZSI6MTAwMH1d
|
| | | float grad = -(1 - pt) * (2 * pt*logf(pt) + pt - 1); // http://blog.csdn.net/linmingan/article/details/77885832
|
| | | //float grad = (1 - pt) * (2 * pt*logf(pt) + pt - 1); // https://github.com/unsky/focal-loss
|
| | |
|
| | | for (n = 0; n < classes; ++n) {
|
| | | delta[index + n] = scale * (((n == class_id) ? 1 : 0) - output[index + n]);
|
| | |
|
| | | delta[index + n] *= alpha*grad;
|
| | |
|
| | | if (n == class_id) *avg_cat += output[index + n];
|
| | | }
|
| | | }
|
| | | else {
|
| | | // default
|
| | | for (n = 0; n < classes; ++n) {
|
| | | delta[index + n] = scale * (((n == class_id) ? 1 : 0) - output[index + n]);
|
| | | if (n == class_id) *avg_cat += output[index + n];
|
| | | }
|
| | | }
|
| | | }
|
| | | }
|
| | |
|
| | | float logit(float x)
|
| | | {
|
| | | return log(x/(1.-x));
|
| | | }
|
| | |
|
| | | float tisnan(float x)
|
| | | {
|
| | | return (x != x);
|
| | | }
|
| | |
|
| | | static int entry_index(layer l, int batch, int location, int entry)
|
| | | {
|
| | | int n = location / (l.w*l.h);
|
| | | int loc = location % (l.w*l.h);
|
| | | return batch*l.outputs + n*l.w*l.h*(l.coords + l.classes + 1) + entry*l.w*l.h + loc;
|
| | | }
|
| | |
|
| | | 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;
|
| | | int size = l.coords + l.classes + 1;
|
| | | memcpy(l.output, state.input, l.outputs*l.batch*sizeof(float));
|
| | | #ifndef GPU
|
| | | flatten(l.output, l.w*l.h, size*l.n, l.batch, 1);
|
| | | #endif
|
| | | for (b = 0; b < l.batch; ++b){
|
| | | 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]);
|
| | | }
|
| | | }
|
| | |
|
| | |
|
| | | #ifndef GPU
|
| | | if (l.softmax_tree){
|
| | | for (b = 0; b < l.batch; ++b){
|
| | | for(i = 0; i < l.h*l.w*l.n; ++i){
|
| | | int index = size*i + b*l.outputs;
|
| | | softmax_tree(l.output + index + 5, 1, 0, 1, l.softmax_tree, l.output + index + 5);
|
| | | }
|
| | | }
|
| | | } else if (l.softmax){
|
| | | for (b = 0; b < l.batch; ++b){
|
| | | for(i = 0; i < l.h*l.w*l.n; ++i){
|
| | | int index = size*i + b*l.outputs;
|
| | | softmax(l.output + index + 5, l.classes, 1, l.output + index + 5, 1);
|
| | | }
|
| | | }
|
| | | }
|
| | | #endif
|
| | | if(!state.train) return;
|
| | | memset(l.delta, 0, l.outputs * l.batch * sizeof(float));
|
| | | float avg_iou = 0;
|
| | | float recall = 0;
|
| | | float avg_cat = 0;
|
| | | float avg_obj = 0;
|
| | | float avg_anyobj = 0;
|
| | | int count = 0;
|
| | | int class_count = 0;
|
| | | *(l.cost) = 0;
|
| | | for (b = 0; b < l.batch; ++b) {
|
| | | if(l.softmax_tree){
|
| | | int onlyclass_id = 0;
|
| | | for(t = 0; t < l.max_boxes; ++t){
|
| | | box truth = float_to_box(state.truth + t*5 + b*l.truths);
|
| | | if(!truth.x) break; // continue;
|
| | | int class_id = state.truth[t*5 + b*l.truths + 4];
|
| | | float maxp = 0;
|
| | | int maxi = 0;
|
| | | if(truth.x > 100000 && truth.y > 100000){
|
| | | for(n = 0; n < l.n*l.w*l.h; ++n){
|
| | | int index = size*n + b*l.outputs + 5;
|
| | | float scale = l.output[index-1];
|
| | | float p = scale*get_hierarchy_probability(l.output + index, l.softmax_tree, class_id);
|
| | | if(p > maxp){
|
| | | maxp = p;
|
| | | maxi = n;
|
| | | }
|
| | | }
|
| | | int index = size*maxi + b*l.outputs + 5;
|
| | | delta_region_class(l.output, l.delta, index, class_id, l.classes, l.softmax_tree, l.class_scale, &avg_cat, l.focal_loss);
|
| | | ++class_count;
|
| | | onlyclass_id = 1;
|
| | | break;
|
| | | }
|
| | | }
|
| | | if(onlyclass_id) continue;
|
| | | }
|
| | | for (j = 0; j < l.h; ++j) {
|
| | | for (i = 0; i < l.w; ++i) {
|
| | | 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);
|
| | | float best_iou = 0;
|
| | | int best_class_id = -1;
|
| | | for(t = 0; t < l.max_boxes; ++t){
|
| | | box truth = float_to_box(state.truth + t*5 + b*l.truths);
|
| | | int class_id = state.truth[t * 5 + b*l.truths + 4];
|
| | | if (class_id >= l.classes) continue; // if label contains class_id more than number of classes in the cfg-file
|
| | | if(!truth.x) break; // continue;
|
| | | float iou = box_iou(pred, truth);
|
| | | if (iou > best_iou) {
|
| | | best_class_id = state.truth[t*5 + b*l.truths + 4];
|
| | | best_iou = iou;
|
| | | }
|
| | | }
|
| | | 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(l.classfix == -1) l.delta[index + 4] = l.noobject_scale * ((best_iou - l.output[index + 4]) * logistic_gradient(l.output[index + 4]));
|
| | | else{
|
| | | if (best_iou > l.thresh) {
|
| | | l.delta[index + 4] = 0;
|
| | | if(l.classfix > 0){
|
| | | delta_region_class(l.output, l.delta, index + 5, best_class_id, l.classes, l.softmax_tree, l.class_scale*(l.classfix == 2 ? l.output[index + 4] : 1), &avg_cat, l.focal_loss);
|
| | | ++class_count;
|
| | | }
|
| | | }
|
| | | }
|
| | |
|
| | | if(*(state.net.seen) < 12800){
|
| | | box truth = {0};
|
| | | truth.x = (i + .5)/l.w;
|
| | | truth.y = (j + .5)/l.h;
|
| | | truth.w = l.biases[2*n];
|
| | | truth.h = l.biases[2*n+1];
|
| | | if(DOABS){
|
| | | truth.w = l.biases[2*n]/l.w;
|
| | | truth.h = l.biases[2*n+1]/l.h;
|
| | | }
|
| | | delta_region_box(truth, l.output, l.biases, n, index, i, j, l.w, l.h, l.delta, .01);
|
| | | }
|
| | | }
|
| | | }
|
| | | }
|
| | | for(t = 0; t < l.max_boxes; ++t){
|
| | | box truth = float_to_box(state.truth + t*5 + b*l.truths);
|
| | | int class_id = state.truth[t * 5 + b*l.truths + 4];
|
| | | if (class_id >= l.classes) {
|
| | | printf("\n Warning: in txt-labels class_id=%d >= classes=%d in cfg-file. In txt-labels class_id should be [from 0 to %d] \n", class_id, l.classes, l.classes-1);
|
| | | getchar();
|
| | | continue; // if label contains class_id more than number of classes in the cfg-file
|
| | | }
|
| | |
|
| | | if(!truth.x) break; // continue;
|
| | | float best_iou = 0;
|
| | | int best_index = 0;
|
| | | int best_n = 0;
|
| | | i = (truth.x * l.w);
|
| | | j = (truth.y * l.h);
|
| | | //printf("%d %f %d %f\n", i, truth.x*l.w, j, truth.y*l.h);
|
| | | box truth_shift = truth;
|
| | | truth_shift.x = 0;
|
| | | truth_shift.y = 0;
|
| | | //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);
|
| | | if(l.bias_match){
|
| | | pred.w = l.biases[2*n];
|
| | | pred.h = l.biases[2*n+1];
|
| | | if(DOABS){
|
| | | pred.w = l.biases[2*n]/l.w;
|
| | | pred.h = l.biases[2*n+1]/l.h;
|
| | | }
|
| | | }
|
| | | //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);
|
| | | if (iou > best_iou){
|
| | | best_index = index;
|
| | | best_iou = iou;
|
| | | best_n = n;
|
| | | }
|
| | | }
|
| | | //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;
|
| | | avg_iou += iou;
|
| | |
|
| | | //l.delta[best_index + 4] = iou - l.output[best_index + 4];
|
| | | avg_obj += l.output[best_index + 4];
|
| | | l.delta[best_index + 4] = l.object_scale * (1 - l.output[best_index + 4]) * logistic_gradient(l.output[best_index + 4]);
|
| | | if (l.rescore) {
|
| | | l.delta[best_index + 4] = l.object_scale * (iou - l.output[best_index + 4]) * logistic_gradient(l.output[best_index + 4]);
|
| | | }
|
| | |
|
| | | if (l.map) class_id = l.map[class_id];
|
| | | delta_region_class(l.output, l.delta, best_index + 5, class_id, l.classes, l.softmax_tree, l.class_scale, &avg_cat, l.focal_loss);
|
| | | ++count;
|
| | | ++class_count;
|
| | | }
|
| | | }
|
| | | //printf("\n");
|
| | | #ifndef GPU
|
| | | flatten(l.delta, l.w*l.h, size*l.n, l.batch, 0);
|
| | | #endif
|
| | | *(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/class_count, avg_obj/count, avg_anyobj/(l.w*l.h*l.n*l.batch), recall/count, count);
|
| | | }
|
| | |
|
| | | void backward_region_layer(const region_layer l, network_state state)
|
| | | {
|
| | | 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 *map)
|
| | | {
|
| | | int i;
|
| | | float *const predictions = l.output;
|
| | | #pragma omp parallel for
|
| | | for (i = 0; i < l.w*l.h; ++i){
|
| | | int j, n;
|
| | | 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];
|
| | | if(l.classfix == -1 && scale < .5) scale = 0;
|
| | | 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;
|
| | | if(map){
|
| | | for(j = 0; j < 200; ++j){
|
| | | float prob = scale*predictions[class_index+map[j]];
|
| | | probs[index][j] = (prob > thresh) ? prob : 0;
|
| | | }
|
| | | } else {
|
| | | 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)
|
| | | {
|
| | | /*
|
| | | if(!state.train){
|
| | | copy_ongpu(l.batch*l.inputs, state.input, 1, l.output_gpu, 1);
|
| | | return;
|
| | | }
|
| | | */
|
| | | flatten_ongpu(state.input, l.h*l.w, l.n*(l.coords + l.classes + 1), l.batch, 1, l.output_gpu);
|
| | | if(l.softmax_tree){
|
| | | int i;
|
| | | int count = 5;
|
| | | for (i = 0; i < l.softmax_tree->groups; ++i) {
|
| | | int group_size = l.softmax_tree->group_size[i];
|
| | | softmax_gpu(l.output_gpu+count, group_size, l.classes + 5, l.w*l.h*l.n*l.batch, 1, l.output_gpu + count);
|
| | | count += group_size;
|
| | | }
|
| | | }else if (l.softmax){
|
| | | softmax_gpu(l.output_gpu+5, l.classes, l.classes + 5, l.w*l.h*l.n*l.batch, 1, l.output_gpu + 5);
|
| | | }
|
| | |
|
| | | float* in_cpu = (float*)xcalloc(l.batch * l.inputs, sizeof(float));
|
| | | float *truth_cpu = 0;
|
| | | if(state.truth){
|
| | | int num_truth = l.batch*l.truths;
|
| | | truth_cpu = (float*)xcalloc(num_truth, sizeof(float));
|
| | | cuda_pull_array(state.truth, truth_cpu, num_truth);
|
| | | }
|
| | | cuda_pull_array(l.output_gpu, in_cpu, l.batch*l.inputs);
|
| | | //cudaStreamSynchronize(get_cuda_stream());
|
| | | network_state cpu_state = state;
|
| | | cpu_state.train = state.train;
|
| | | cpu_state.truth = truth_cpu;
|
| | | cpu_state.input = in_cpu;
|
| | | forward_region_layer(l, cpu_state);
|
| | | //cuda_push_array(l.output_gpu, l.output, l.batch*l.outputs);
|
| | | free(cpu_state.input);
|
| | | if(!state.train) return;
|
| | | cuda_push_array(l.delta_gpu, l.delta, l.batch*l.outputs);
|
| | | //cudaStreamSynchronize(get_cuda_stream());
|
| | | if(cpu_state.truth) free(cpu_state.truth);
|
| | | }
|
| | |
|
| | | void backward_region_layer_gpu(region_layer l, network_state state)
|
| | | {
|
| | | flatten_ongpu(l.delta_gpu, l.h*l.w, l.n*(l.coords + l.classes + 1), l.batch, 0, state.delta);
|
| | | }
|
| | | #endif
|
| | |
|
| | |
|
| | | void correct_region_boxes(detection *dets, int n, int w, int h, int netw, int neth, int relative)
|
| | | {
|
| | | int i;
|
| | | int new_w = 0;
|
| | | int new_h = 0;
|
| | | if (((float)netw / w) < ((float)neth / h)) {
|
| | | new_w = netw;
|
| | | new_h = (h * netw) / w;
|
| | | }
|
| | | else {
|
| | | new_h = neth;
|
| | | new_w = (w * neth) / h;
|
| | | }
|
| | | for (i = 0; i < n; ++i) {
|
| | | box b = dets[i].bbox;
|
| | | b.x = (b.x - (netw - new_w) / 2. / netw) / ((float)new_w / netw);
|
| | | b.y = (b.y - (neth - new_h) / 2. / neth) / ((float)new_h / neth);
|
| | | b.w *= (float)netw / new_w;
|
| | | b.h *= (float)neth / new_h;
|
| | | if (!relative) {
|
| | | b.x *= w;
|
| | | b.w *= w;
|
| | | b.y *= h;
|
| | | b.h *= h;
|
| | | }
|
| | | dets[i].bbox = b;
|
| | | }
|
| | | }
|
| | |
|
| | |
|
| | | void get_region_detections(layer l, int w, int h, int netw, int neth, float thresh, int *map, float tree_thresh, int relative, detection *dets)
|
| | | {
|
| | | int i, j, n, z;
|
| | | float *predictions = l.output;
|
| | | if (l.batch == 2) {
|
| | | float *flip = l.output + l.outputs;
|
| | | for (j = 0; j < l.h; ++j) {
|
| | | for (i = 0; i < l.w / 2; ++i) {
|
| | | for (n = 0; n < l.n; ++n) {
|
| | | for (z = 0; z < l.classes + l.coords + 1; ++z) {
|
| | | int i1 = z*l.w*l.h*l.n + n*l.w*l.h + j*l.w + i;
|
| | | int i2 = z*l.w*l.h*l.n + n*l.w*l.h + j*l.w + (l.w - i - 1);
|
| | | float swap = flip[i1];
|
| | | flip[i1] = flip[i2];
|
| | | flip[i2] = swap;
|
| | | if (z == 0) {
|
| | | flip[i1] = -flip[i1];
|
| | | flip[i2] = -flip[i2];
|
| | | }
|
| | | }
|
| | | }
|
| | | }
|
| | | }
|
| | | for (i = 0; i < l.outputs; ++i) {
|
| | | l.output[i] = (l.output[i] + flip[i]) / 2.;
|
| | | }
|
| | | }
|
| | | 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 = n*l.w*l.h + i;
|
| | | for (j = 0; j < l.classes; ++j) {
|
| | | dets[index].prob[j] = 0;
|
| | | }
|
| | | int obj_index = entry_index(l, 0, n*l.w*l.h + i, l.coords);
|
| | | int box_index = entry_index(l, 0, n*l.w*l.h + i, 0);
|
| | | int mask_index = entry_index(l, 0, n*l.w*l.h + i, 4);
|
| | | float scale = l.background ? 1 : predictions[obj_index];
|
| | | dets[index].bbox = get_region_box(predictions, l.biases, n, box_index, col, row, l.w, l.h);// , l.w*l.h);
|
| | | dets[index].objectness = scale > thresh ? scale : 0;
|
| | | if (dets[index].mask) {
|
| | | for (j = 0; j < l.coords - 4; ++j) {
|
| | | dets[index].mask[j] = l.output[mask_index + j*l.w*l.h];
|
| | | }
|
| | | }
|
| | |
|
| | | int class_index = entry_index(l, 0, n*l.w*l.h + i, l.coords + !l.background);
|
| | | if (l.softmax_tree) {
|
| | |
|
| | | hierarchy_predictions(predictions + class_index, l.classes, l.softmax_tree, 0);// , l.w*l.h);
|
| | | if (map) {
|
| | | for (j = 0; j < 200; ++j) {
|
| | | int class_index = entry_index(l, 0, n*l.w*l.h + i, l.coords + 1 + map[j]);
|
| | | float prob = scale*predictions[class_index];
|
| | | dets[index].prob[j] = (prob > thresh) ? prob : 0;
|
| | | }
|
| | | }
|
| | | else {
|
| | | int j = hierarchy_top_prediction(predictions + class_index, l.softmax_tree, tree_thresh, l.w*l.h);
|
| | | dets[index].prob[j] = (scale > thresh) ? scale : 0;
|
| | | }
|
| | | }
|
| | | else {
|
| | | if (dets[index].objectness) {
|
| | | for (j = 0; j < l.classes; ++j) {
|
| | | int class_index = entry_index(l, 0, n*l.w*l.h + i, l.coords + 1 + j);
|
| | | float prob = scale*predictions[class_index];
|
| | | dets[index].prob[j] = (prob > thresh) ? prob : 0;
|
| | | }
|
| | | }
|
| | | }
|
| | | }
|
| | | }
|
| | | correct_region_boxes(dets, l.w*l.h*l.n, w, h, netw, neth, relative);
|
| | | }
|
| | |
|
| | | void zero_objectness(layer l)
|
| | | {
|
| | | int i, n;
|
| | | for (i = 0; i < l.w*l.h; ++i) {
|
| | | for (n = 0; n < l.n; ++n) {
|
| | | int obj_index = entry_index(l, 0, n*l.w*l.h + i, l.coords);
|
| | | l.output[obj_index] = 0;
|
| | | }
|
| | | }
|
| | | }
|
| | | #include "region_layer.h" |
| | | #include "activations.h" |
| | | #include "blas.h" |
| | | #include "box.h" |
| | | #include "dark_cuda.h" |
| | | #include "utils.h" |
| | | #include <stdio.h> |
| | | #include <assert.h> |
| | | #include <string.h> |
| | | #include <stdlib.h> |
| | | |
| | | #define DOABS 1 |
| | | |
| | | region_layer make_region_layer(int batch, int w, int h, int n, int classes, int coords, int max_boxes) |
| | | { |
| | | region_layer l = { (LAYER_TYPE)0 }; |
| | | l.type = REGION; |
| | | |
| | | l.n = n; |
| | | l.batch = batch; |
| | | l.h = h; |
| | | l.w = w; |
| | | l.classes = classes; |
| | | l.coords = coords; |
| | | l.cost = (float*)xcalloc(1, sizeof(float)); |
| | | l.biases = (float*)xcalloc(n * 2, sizeof(float)); |
| | | l.bias_updates = (float*)xcalloc(n * 2, sizeof(float)); |
| | | l.outputs = h*w*n*(classes + coords + 1); |
| | | l.inputs = l.outputs; |
| | | l.max_boxes = max_boxes; |
| | | l.truth_size = 4 + 2; |
| | | l.truths = max_boxes*l.truth_size; |
| | | l.delta = (float*)xcalloc(batch * l.outputs, sizeof(float)); |
| | | l.output = (float*)xcalloc(batch * l.outputs, sizeof(float)); |
| | | int i; |
| | | for(i = 0; i < n*2; ++i){ |
| | | 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 |
| | | |
| | | fprintf(stderr, "detection\n"); |
| | | srand(time(0)); |
| | | |
| | | return l; |
| | | } |
| | | |
| | | void resize_region_layer(layer *l, int w, int h) |
| | | { |
| | | #ifdef GPU |
| | | int old_w = l->w; |
| | | int old_h = l->h; |
| | | #endif |
| | | l->w = w; |
| | | l->h = h; |
| | | |
| | | l->outputs = h*w*l->n*(l->classes + l->coords + 1); |
| | | l->inputs = l->outputs; |
| | | |
| | | l->output = (float*)xrealloc(l->output, l->batch * l->outputs * sizeof(float)); |
| | | l->delta = (float*)xrealloc(l->delta, l->batch * l->outputs * sizeof(float)); |
| | | |
| | | #ifdef GPU |
| | | //if (old_w < w || old_h < h) |
| | | { |
| | | cuda_free(l->delta_gpu); |
| | | cuda_free(l->output_gpu); |
| | | |
| | | l->delta_gpu = cuda_make_array(l->delta, l->batch*l->outputs); |
| | | l->output_gpu = cuda_make_array(l->output, l->batch*l->outputs); |
| | | } |
| | | #endif |
| | | } |
| | | |
| | | 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 + 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]; |
| | | if(DOABS){ |
| | | b.w = exp(x[index + 2]) * biases[2*n] / w; |
| | | b.h = exp(x[index + 3]) * biases[2*n+1] / h; |
| | | } |
| | | return b; |
| | | } |
| | | |
| | | float delta_region_box(box truth, float *x, float *biases, int n, int index, int i, int j, int w, int h, float *delta, float scale) |
| | | { |
| | | box pred = get_region_box(x, biases, n, index, i, j, w, h); |
| | | float iou = box_iou(pred, truth); |
| | | |
| | | float tx = (truth.x*w - i); |
| | | float ty = (truth.y*h - j); |
| | | float tw = log(truth.w / biases[2*n]); |
| | | float th = log(truth.h / biases[2*n + 1]); |
| | | if(DOABS){ |
| | | tw = log(truth.w*w / biases[2*n]); |
| | | th = log(truth.h*h / biases[2*n + 1]); |
| | | } |
| | | |
| | | 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; |
| | | } |
| | | |
| | | void delta_region_class(float *output, float *delta, int index, int class_id, int classes, tree *hier, float scale, float *avg_cat, int focal_loss) |
| | | { |
| | | int i, n; |
| | | if(hier){ |
| | | float pred = 1; |
| | | while(class_id >= 0){ |
| | | pred *= output[index + class_id]; |
| | | int g = hier->group[class_id]; |
| | | int offset = hier->group_offset[g]; |
| | | for(i = 0; i < hier->group_size[g]; ++i){ |
| | | delta[index + offset + i] = scale * (0 - output[index + offset + i]); |
| | | } |
| | | delta[index + class_id] = scale * (1 - output[index + class_id]); |
| | | |
| | | class_id = hier->parent[class_id]; |
| | | } |
| | | *avg_cat += pred; |
| | | } else { |
| | | // Focal loss |
| | | if (focal_loss) { |
| | | // Focal Loss |
| | | float alpha = 0.5; // 0.25 or 0.5 |
| | | //float gamma = 2; // hardcoded in many places of the grad-formula |
| | | |
| | | int ti = index + class_id; |
| | | float pt = output[ti] + 0.000000000000001F; |
| | | // http://fooplot.com/#W3sidHlwZSI6MCwiZXEiOiItKDEteCkqKDIqeCpsb2coeCkreC0xKSIsImNvbG9yIjoiIzAwMDAwMCJ9LHsidHlwZSI6MTAwMH1d |
| | | float grad = -(1 - pt) * (2 * pt*logf(pt) + pt - 1); // http://blog.csdn.net/linmingan/article/details/77885832 |
| | | //float grad = (1 - pt) * (2 * pt*logf(pt) + pt - 1); // https://github.com/unsky/focal-loss |
| | | |
| | | for (n = 0; n < classes; ++n) { |
| | | delta[index + n] = scale * (((n == class_id) ? 1 : 0) - output[index + n]); |
| | | |
| | | delta[index + n] *= alpha*grad; |
| | | |
| | | if (n == class_id) *avg_cat += output[index + n]; |
| | | } |
| | | } |
| | | else { |
| | | // default |
| | | for (n = 0; n < classes; ++n) { |
| | | delta[index + n] = scale * (((n == class_id) ? 1 : 0) - output[index + n]); |
| | | if (n == class_id) *avg_cat += output[index + n]; |
| | | } |
| | | } |
| | | } |
| | | } |
| | | |
| | | float logit(float x) |
| | | { |
| | | return log(x/(1.-x)); |
| | | } |
| | | |
| | | float tisnan(float x) |
| | | { |
| | | return (x != x); |
| | | } |
| | | |
| | | static int entry_index(layer l, int batch, int location, int entry) |
| | | { |
| | | int n = location / (l.w*l.h); |
| | | int loc = location % (l.w*l.h); |
| | | return batch*l.outputs + n*l.w*l.h*(l.coords + l.classes + 1) + entry*l.w*l.h + loc; |
| | | } |
| | | |
| | | 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; |
| | | int size = l.coords + l.classes + 1; |
| | | memcpy(l.output, state.input, l.outputs*l.batch*sizeof(float)); |
| | | #ifndef GPU |
| | | flatten(l.output, l.w*l.h, size*l.n, l.batch, 1); |
| | | #endif |
| | | for (b = 0; b < l.batch; ++b){ |
| | | 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]); |
| | | } |
| | | } |
| | | |
| | | |
| | | #ifndef GPU |
| | | if (l.softmax_tree){ |
| | | for (b = 0; b < l.batch; ++b){ |
| | | for(i = 0; i < l.h*l.w*l.n; ++i){ |
| | | int index = size*i + b*l.outputs; |
| | | softmax_tree(l.output + index + 5, 1, 0, 1, l.softmax_tree, l.output + index + 5); |
| | | } |
| | | } |
| | | } else if (l.softmax){ |
| | | for (b = 0; b < l.batch; ++b){ |
| | | for(i = 0; i < l.h*l.w*l.n; ++i){ |
| | | int index = size*i + b*l.outputs; |
| | | softmax(l.output + index + 5, l.classes, 1, l.output + index + 5, 1); |
| | | } |
| | | } |
| | | } |
| | | #endif |
| | | if(!state.train) return; |
| | | memset(l.delta, 0, l.outputs * l.batch * sizeof(float)); |
| | | float avg_iou = 0; |
| | | float recall = 0; |
| | | float avg_cat = 0; |
| | | float avg_obj = 0; |
| | | float avg_anyobj = 0; |
| | | int count = 0; |
| | | int class_count = 0; |
| | | *(l.cost) = 0; |
| | | for (b = 0; b < l.batch; ++b) { |
| | | if(l.softmax_tree){ |
| | | int onlyclass_id = 0; |
| | | for(t = 0; t < l.max_boxes; ++t){ |
| | | box truth = float_to_box(state.truth + t*l.truth_size + b*l.truths); |
| | | if(!truth.x) break; // continue; |
| | | int class_id = state.truth[t*l.truth_size + b*l.truths + 4]; |
| | | float maxp = 0; |
| | | int maxi = 0; |
| | | if(truth.x > 100000 && truth.y > 100000){ |
| | | for(n = 0; n < l.n*l.w*l.h; ++n){ |
| | | int index = size*n + b*l.outputs + 5; |
| | | float scale = l.output[index-1]; |
| | | float p = scale*get_hierarchy_probability(l.output + index, l.softmax_tree, class_id); |
| | | if(p > maxp){ |
| | | maxp = p; |
| | | maxi = n; |
| | | } |
| | | } |
| | | int index = size*maxi + b*l.outputs + 5; |
| | | delta_region_class(l.output, l.delta, index, class_id, l.classes, l.softmax_tree, l.class_scale, &avg_cat, l.focal_loss); |
| | | ++class_count; |
| | | onlyclass_id = 1; |
| | | break; |
| | | } |
| | | } |
| | | if(onlyclass_id) continue; |
| | | } |
| | | for (j = 0; j < l.h; ++j) { |
| | | for (i = 0; i < l.w; ++i) { |
| | | 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); |
| | | float best_iou = 0; |
| | | int best_class_id = -1; |
| | | for(t = 0; t < l.max_boxes; ++t){ |
| | | box truth = float_to_box(state.truth + t*l.truth_size + b*l.truths); |
| | | int class_id = state.truth[t * l.truth_size + b*l.truths + 4]; |
| | | if (class_id >= l.classes) continue; // if label contains class_id more than number of classes in the cfg-file |
| | | if(!truth.x) break; // continue; |
| | | float iou = box_iou(pred, truth); |
| | | if (iou > best_iou) { |
| | | best_class_id = state.truth[t*l.truth_size + b*l.truths + 4]; |
| | | best_iou = iou; |
| | | } |
| | | } |
| | | 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(l.classfix == -1) l.delta[index + 4] = l.noobject_scale * ((best_iou - l.output[index + 4]) * logistic_gradient(l.output[index + 4])); |
| | | else{ |
| | | if (best_iou > l.thresh) { |
| | | l.delta[index + 4] = 0; |
| | | if(l.classfix > 0){ |
| | | delta_region_class(l.output, l.delta, index + 5, best_class_id, l.classes, l.softmax_tree, l.class_scale*(l.classfix == 2 ? l.output[index + 4] : 1), &avg_cat, l.focal_loss); |
| | | ++class_count; |
| | | } |
| | | } |
| | | } |
| | | |
| | | if(*(state.net.seen) < 12800){ |
| | | box truth = {0}; |
| | | truth.x = (i + .5)/l.w; |
| | | truth.y = (j + .5)/l.h; |
| | | truth.w = l.biases[2*n]; |
| | | truth.h = l.biases[2*n+1]; |
| | | if(DOABS){ |
| | | truth.w = l.biases[2*n]/l.w; |
| | | truth.h = l.biases[2*n+1]/l.h; |
| | | } |
| | | delta_region_box(truth, l.output, l.biases, n, index, i, j, l.w, l.h, l.delta, .01); |
| | | } |
| | | } |
| | | } |
| | | } |
| | | for(t = 0; t < l.max_boxes; ++t){ |
| | | box truth = float_to_box(state.truth + t*l.truth_size + b*l.truths); |
| | | int class_id = state.truth[t * l.truth_size + b*l.truths + 4]; |
| | | if (class_id >= l.classes) { |
| | | printf("\n Warning: in txt-labels class_id=%d >= classes=%d in cfg-file. In txt-labels class_id should be [from 0 to %d] \n", class_id, l.classes, l.classes-1); |
| | | getchar(); |
| | | continue; // if label contains class_id more than number of classes in the cfg-file |
| | | } |
| | | |
| | | if(!truth.x) break; // continue; |
| | | float best_iou = 0; |
| | | int best_index = 0; |
| | | int best_n = 0; |
| | | i = (truth.x * l.w); |
| | | j = (truth.y * l.h); |
| | | //printf("%d %f %d %f\n", i, truth.x*l.w, j, truth.y*l.h); |
| | | box truth_shift = truth; |
| | | truth_shift.x = 0; |
| | | truth_shift.y = 0; |
| | | //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); |
| | | if(l.bias_match){ |
| | | pred.w = l.biases[2*n]; |
| | | pred.h = l.biases[2*n+1]; |
| | | if(DOABS){ |
| | | pred.w = l.biases[2*n]/l.w; |
| | | pred.h = l.biases[2*n+1]/l.h; |
| | | } |
| | | } |
| | | //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); |
| | | if (iou > best_iou){ |
| | | best_index = index; |
| | | best_iou = iou; |
| | | best_n = n; |
| | | } |
| | | } |
| | | //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; |
| | | avg_iou += iou; |
| | | |
| | | //l.delta[best_index + 4] = iou - l.output[best_index + 4]; |
| | | avg_obj += l.output[best_index + 4]; |
| | | l.delta[best_index + 4] = l.object_scale * (1 - l.output[best_index + 4]) * logistic_gradient(l.output[best_index + 4]); |
| | | if (l.rescore) { |
| | | l.delta[best_index + 4] = l.object_scale * (iou - l.output[best_index + 4]) * logistic_gradient(l.output[best_index + 4]); |
| | | } |
| | | |
| | | if (l.map) class_id = l.map[class_id]; |
| | | delta_region_class(l.output, l.delta, best_index + 5, class_id, l.classes, l.softmax_tree, l.class_scale, &avg_cat, l.focal_loss); |
| | | ++count; |
| | | ++class_count; |
| | | } |
| | | } |
| | | //printf("\n"); |
| | | #ifndef GPU |
| | | flatten(l.delta, l.w*l.h, size*l.n, l.batch, 0); |
| | | #endif |
| | | *(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/class_count, avg_obj/count, avg_anyobj/(l.w*l.h*l.n*l.batch), recall/count, count); |
| | | } |
| | | |
| | | void backward_region_layer(const region_layer l, network_state state) |
| | | { |
| | | 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 *map) |
| | | { |
| | | int i; |
| | | float *const predictions = l.output; |
| | | #pragma omp parallel for |
| | | for (i = 0; i < l.w*l.h; ++i){ |
| | | int j, n; |
| | | 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]; |
| | | if(l.classfix == -1 && scale < .5) scale = 0; |
| | | 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; |
| | | if(map){ |
| | | for(j = 0; j < 200; ++j){ |
| | | float prob = scale*predictions[class_index+map[j]]; |
| | | probs[index][j] = (prob > thresh) ? prob : 0; |
| | | } |
| | | } else { |
| | | 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) |
| | | { |
| | | /* |
| | | if(!state.train){ |
| | | copy_ongpu(l.batch*l.inputs, state.input, 1, l.output_gpu, 1); |
| | | return; |
| | | } |
| | | */ |
| | | flatten_ongpu(state.input, l.h*l.w, l.n*(l.coords + l.classes + 1), l.batch, 1, l.output_gpu); |
| | | if(l.softmax_tree){ |
| | | int i; |
| | | int count = 5; |
| | | for (i = 0; i < l.softmax_tree->groups; ++i) { |
| | | int group_size = l.softmax_tree->group_size[i]; |
| | | softmax_gpu(l.output_gpu+count, group_size, l.classes + 5, l.w*l.h*l.n*l.batch, 1, l.output_gpu + count); |
| | | count += group_size; |
| | | } |
| | | }else if (l.softmax){ |
| | | softmax_gpu(l.output_gpu+5, l.classes, l.classes + 5, l.w*l.h*l.n*l.batch, 1, l.output_gpu + 5); |
| | | } |
| | | |
| | | float* in_cpu = (float*)xcalloc(l.batch * l.inputs, sizeof(float)); |
| | | float *truth_cpu = 0; |
| | | if(state.truth){ |
| | | int num_truth = l.batch*l.truths; |
| | | truth_cpu = (float*)xcalloc(num_truth, sizeof(float)); |
| | | cuda_pull_array(state.truth, truth_cpu, num_truth); |
| | | } |
| | | cuda_pull_array(l.output_gpu, in_cpu, l.batch*l.inputs); |
| | | //cudaStreamSynchronize(get_cuda_stream()); |
| | | network_state cpu_state = state; |
| | | cpu_state.train = state.train; |
| | | cpu_state.truth = truth_cpu; |
| | | cpu_state.input = in_cpu; |
| | | forward_region_layer(l, cpu_state); |
| | | //cuda_push_array(l.output_gpu, l.output, l.batch*l.outputs); |
| | | free(cpu_state.input); |
| | | if(!state.train) return; |
| | | cuda_push_array(l.delta_gpu, l.delta, l.batch*l.outputs); |
| | | //cudaStreamSynchronize(get_cuda_stream()); |
| | | if(cpu_state.truth) free(cpu_state.truth); |
| | | } |
| | | |
| | | void backward_region_layer_gpu(region_layer l, network_state state) |
| | | { |
| | | flatten_ongpu(l.delta_gpu, l.h*l.w, l.n*(l.coords + l.classes + 1), l.batch, 0, state.delta); |
| | | } |
| | | #endif |
| | | |
| | | |
| | | void correct_region_boxes(detection *dets, int n, int w, int h, int netw, int neth, int relative) |
| | | { |
| | | int i; |
| | | int new_w = 0; |
| | | int new_h = 0; |
| | | if (((float)netw / w) < ((float)neth / h)) { |
| | | new_w = netw; |
| | | new_h = (h * netw) / w; |
| | | } |
| | | else { |
| | | new_h = neth; |
| | | new_w = (w * neth) / h; |
| | | } |
| | | for (i = 0; i < n; ++i) { |
| | | box b = dets[i].bbox; |
| | | b.x = (b.x - (netw - new_w) / 2. / netw) / ((float)new_w / netw); |
| | | b.y = (b.y - (neth - new_h) / 2. / neth) / ((float)new_h / neth); |
| | | b.w *= (float)netw / new_w; |
| | | b.h *= (float)neth / new_h; |
| | | if (!relative) { |
| | | b.x *= w; |
| | | b.w *= w; |
| | | b.y *= h; |
| | | b.h *= h; |
| | | } |
| | | dets[i].bbox = b; |
| | | } |
| | | } |
| | | |
| | | |
| | | void get_region_detections(layer l, int w, int h, int netw, int neth, float thresh, int *map, float tree_thresh, int relative, detection *dets) |
| | | { |
| | | int i, j, n, z; |
| | | float *predictions = l.output; |
| | | if (l.batch == 2) { |
| | | float *flip = l.output + l.outputs; |
| | | for (j = 0; j < l.h; ++j) { |
| | | for (i = 0; i < l.w / 2; ++i) { |
| | | for (n = 0; n < l.n; ++n) { |
| | | for (z = 0; z < l.classes + l.coords + 1; ++z) { |
| | | int i1 = z*l.w*l.h*l.n + n*l.w*l.h + j*l.w + i; |
| | | int i2 = z*l.w*l.h*l.n + n*l.w*l.h + j*l.w + (l.w - i - 1); |
| | | float swap = flip[i1]; |
| | | flip[i1] = flip[i2]; |
| | | flip[i2] = swap; |
| | | if (z == 0) { |
| | | flip[i1] = -flip[i1]; |
| | | flip[i2] = -flip[i2]; |
| | | } |
| | | } |
| | | } |
| | | } |
| | | } |
| | | for (i = 0; i < l.outputs; ++i) { |
| | | l.output[i] = (l.output[i] + flip[i]) / 2.; |
| | | } |
| | | } |
| | | 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 = n*l.w*l.h + i; |
| | | for (j = 0; j < l.classes; ++j) { |
| | | dets[index].prob[j] = 0; |
| | | } |
| | | int obj_index = entry_index(l, 0, n*l.w*l.h + i, l.coords); |
| | | int box_index = entry_index(l, 0, n*l.w*l.h + i, 0); |
| | | int mask_index = entry_index(l, 0, n*l.w*l.h + i, 4); |
| | | float scale = l.background ? 1 : predictions[obj_index]; |
| | | dets[index].bbox = get_region_box(predictions, l.biases, n, box_index, col, row, l.w, l.h);// , l.w*l.h); |
| | | dets[index].objectness = scale > thresh ? scale : 0; |
| | | if (dets[index].mask) { |
| | | for (j = 0; j < l.coords - 4; ++j) { |
| | | dets[index].mask[j] = l.output[mask_index + j*l.w*l.h]; |
| | | } |
| | | } |
| | | |
| | | int class_index = entry_index(l, 0, n*l.w*l.h + i, l.coords + !l.background); |
| | | if (l.softmax_tree) { |
| | | |
| | | hierarchy_predictions(predictions + class_index, l.classes, l.softmax_tree, 0);// , l.w*l.h); |
| | | if (map) { |
| | | for (j = 0; j < 200; ++j) { |
| | | int class_index = entry_index(l, 0, n*l.w*l.h + i, l.coords + 1 + map[j]); |
| | | float prob = scale*predictions[class_index]; |
| | | dets[index].prob[j] = (prob > thresh) ? prob : 0; |
| | | } |
| | | } |
| | | else { |
| | | int j = hierarchy_top_prediction(predictions + class_index, l.softmax_tree, tree_thresh, l.w*l.h); |
| | | dets[index].prob[j] = (scale > thresh) ? scale : 0; |
| | | } |
| | | } |
| | | else { |
| | | if (dets[index].objectness) { |
| | | for (j = 0; j < l.classes; ++j) { |
| | | int class_index = entry_index(l, 0, n*l.w*l.h + i, l.coords + 1 + j); |
| | | float prob = scale*predictions[class_index]; |
| | | dets[index].prob[j] = (prob > thresh) ? prob : 0; |
| | | } |
| | | } |
| | | } |
| | | } |
| | | } |
| | | correct_region_boxes(dets, l.w*l.h*l.n, w, h, netw, neth, relative); |
| | | } |
| | | |
| | | void zero_objectness(layer l) |
| | | { |
| | | int i, n; |
| | | for (i = 0; i < l.w*l.h; ++i) { |
| | | for (n = 0; n < l.n; ++n) { |
| | | int obj_index = entry_index(l, 0, n*l.w*l.h + i, l.coords); |
| | | l.output[obj_index] = 0; |
| | | } |
| | | } |
| | | } |