| | |
| | | int w; |
| | | int nh; |
| | | int nw; |
| | | int jitter; |
| | | int num_boxes; |
| | | int classes; |
| | | int background; |
| | | data *d; |
| | | }; |
| | | |
| | |
| | | return X; |
| | | } |
| | | |
| | | void fill_truth_detection(char *path, float *truth, int classes, int height, int width, int num_height, int num_width, int dy, int dx, int jitter, int flip) |
| | | typedef struct box{ |
| | | int id; |
| | | float x,y,w,h; |
| | | float left, right, top, bottom; |
| | | } box; |
| | | |
| | | box *read_boxes(char *filename, int *n) |
| | | { |
| | | int box_height = height/num_height; |
| | | int box_width = width/num_width; |
| | | char *labelpath = find_replace(path, "VOC2012/JPEGImages", "labels"); |
| | | labelpath = find_replace(labelpath, ".jpg", ".txt"); |
| | | FILE *file = fopen(labelpath, "r"); |
| | | if(!file) file_error(labelpath); |
| | | box *boxes = calloc(1, sizeof(box)); |
| | | FILE *file = fopen(filename, "r"); |
| | | if(!file) file_error(filename); |
| | | float x, y, h, w; |
| | | int id; |
| | | int count = 0; |
| | | while(fscanf(file, "%d %f %f %f %f", &id, &x, &y, &w, &h) == 5){ |
| | | if(flip) x = 1-x; |
| | | x *= width + jitter; |
| | | y *= height + jitter; |
| | | x -= dx; |
| | | y -= dy; |
| | | int i = x/box_width; |
| | | int j = y/box_height; |
| | | |
| | | if(i < 0) i = 0; |
| | | if(i >= num_width) i = num_width-1; |
| | | if(j < 0) j = 0; |
| | | if(j >= num_height) j = num_height-1; |
| | | |
| | | float dw = (x - i*box_width)/box_width; |
| | | float dh = (y - j*box_height)/box_height; |
| | | //printf("%d %d %d %f %f\n", id, i, j, dh, dw); |
| | | int index = (i+j*num_width)*(4+classes); |
| | | if(truth[index+classes]) continue; |
| | | truth[index+id] = 1; |
| | | index += classes; |
| | | truth[index++] = dh; |
| | | truth[index++] = dw; |
| | | truth[index++] = h*(height+jitter)/height; |
| | | truth[index++] = w*(width+jitter)/width; |
| | | } |
| | | int i, j; |
| | | for(i = 0; i < num_height*num_width*(4+classes); i += 4+classes){ |
| | | int background = 1; |
| | | for(j = i; j < i+classes; ++j) if (truth[j]) background = 0; |
| | | truth[i+classes-1] = background; |
| | | boxes = realloc(boxes, (count+1)*sizeof(box)); |
| | | boxes[count].id = id; |
| | | boxes[count].x = x; |
| | | boxes[count].y = y; |
| | | boxes[count].h = h; |
| | | boxes[count].w = w; |
| | | boxes[count].left = x - w/2; |
| | | boxes[count].right = x + w/2; |
| | | boxes[count].top = y - h/2; |
| | | boxes[count].bottom = y + h/2; |
| | | ++count; |
| | | } |
| | | fclose(file); |
| | | *n = count; |
| | | return boxes; |
| | | } |
| | | |
| | | void randomize_boxes(box *b, int n) |
| | | { |
| | | int i; |
| | | for(i = 0; i < n; ++i){ |
| | | box swap = b[i]; |
| | | int index = rand()%n; |
| | | b[i] = b[index]; |
| | | b[index] = swap; |
| | | } |
| | | } |
| | | |
| | | void fill_truth_detection(char *path, float *truth, int classes, int num_boxes, int flip, int background, float dx, float dy, float sx, float sy) |
| | | { |
| | | char *labelpath = find_replace(path, "detection_images", "labels"); |
| | | labelpath = find_replace(labelpath, ".jpg", ".txt"); |
| | | labelpath = find_replace(labelpath, ".JPEG", ".txt"); |
| | | int count = 0; |
| | | box *boxes = read_boxes(labelpath, &count); |
| | | randomize_boxes(boxes, count); |
| | | float x,y,w,h; |
| | | float left, top, right, bot; |
| | | int id; |
| | | int i; |
| | | if(background){ |
| | | for(i = 0; i < num_boxes*num_boxes*(4+classes+background); i += 4+classes+background){ |
| | | truth[i] = 1; |
| | | } |
| | | } |
| | | for(i = 0; i < count; ++i){ |
| | | left = boxes[i].left * sx - dx; |
| | | right = boxes[i].right * sx - dx; |
| | | top = boxes[i].top * sy - dy; |
| | | bot = boxes[i].bottom* sy - dy; |
| | | id = boxes[i].id; |
| | | |
| | | if(flip){ |
| | | float swap = left; |
| | | left = 1. - right; |
| | | right = 1. - swap; |
| | | } |
| | | |
| | | left = constrain(0, 1, left); |
| | | right = constrain(0, 1, right); |
| | | top = constrain(0, 1, top); |
| | | bot = constrain(0, 1, bot); |
| | | |
| | | x = (left+right)/2; |
| | | y = (top+bot)/2; |
| | | w = (right - left); |
| | | h = (bot - top); |
| | | |
| | | if (x <= 0 || x >= 1 || y <= 0 || y >= 1) continue; |
| | | |
| | | int i = (int)(x*num_boxes); |
| | | int j = (int)(y*num_boxes); |
| | | |
| | | x = x*num_boxes - i; |
| | | y = y*num_boxes - j; |
| | | |
| | | /* |
| | | float maxwidth = distance_from_edge(i, num_boxes); |
| | | float maxheight = distance_from_edge(j, num_boxes); |
| | | w = w/maxwidth; |
| | | h = h/maxheight; |
| | | */ |
| | | |
| | | w = constrain(0, 1, w); |
| | | h = constrain(0, 1, h); |
| | | if (w == 0 || h == 0) continue; |
| | | w = sqrt(w); |
| | | h = sqrt(h); |
| | | |
| | | int index = (i+j*num_boxes)*(4+classes+background); |
| | | if(truth[index+classes+background+2]) continue; |
| | | if(background) truth[index++] = 0; |
| | | truth[index+id] = 1; |
| | | index += classes; |
| | | truth[index++] = y; |
| | | truth[index++] = x; |
| | | truth[index++] = h; |
| | | truth[index++] = w; |
| | | } |
| | | free(boxes); |
| | | } |
| | | |
| | | #define NUMCHARS 37 |
| | |
| | | data d; |
| | | d.shallow = 0; |
| | | d.X = load_image_paths(paths, n, h, w); |
| | | d.X.cols = 17100; |
| | | d.y = d.X; |
| | | if(m) free(paths); |
| | | return d; |
| | |
| | | } |
| | | } |
| | | |
| | | data load_data_detection_jitter_random(int n, char **paths, int m, int classes, int h, int w, int nh, int nw, int jitter) |
| | | data load_data_detection_jitter_random(int n, char **paths, int m, int classes, int h, int w, int num_boxes, int background) |
| | | { |
| | | char **random_paths = get_random_paths(paths, n, m); |
| | | int i; |
| | | data d; |
| | | d.shallow = 0; |
| | | d.X = load_image_paths(random_paths, n, h, w); |
| | | int k = nh*nw*(4+classes); |
| | | |
| | | d.X.rows = n; |
| | | d.X.vals = calloc(d.X.rows, sizeof(float*)); |
| | | d.X.cols = h*w*3; |
| | | |
| | | int k = num_boxes*num_boxes*(4+classes+background); |
| | | d.y = make_matrix(n, k); |
| | | for(i = 0; i < n; ++i){ |
| | | int dx = rand()%jitter; |
| | | int dy = rand()%jitter; |
| | | image orig = load_image_color(random_paths[i], 0, 0); |
| | | int oh = orig.h; |
| | | int ow = orig.w; |
| | | |
| | | int dw = ow/10; |
| | | int dh = oh/10; |
| | | |
| | | int pleft = (rand_uniform() * 2*dw - dw); |
| | | int pright = (rand_uniform() * 2*dw - dw); |
| | | int ptop = (rand_uniform() * 2*dh - dh); |
| | | int pbot = (rand_uniform() * 2*dh - dh); |
| | | |
| | | int swidth = ow - pleft - pright; |
| | | int sheight = oh - ptop - pbot; |
| | | |
| | | float sx = (float)swidth / ow; |
| | | float sy = (float)sheight / oh; |
| | | |
| | | int flip = rand()%2; |
| | | fill_truth_detection(random_paths[i], d.y.vals[i], classes, h-jitter, w-jitter, nh, nw, dy, dx, jitter, flip); |
| | | image a = float_to_image(h, w, 3, d.X.vals[i]); |
| | | if(flip) flip_image(a); |
| | | jitter_image(a,h-jitter,w-jitter,dy,dx); |
| | | image cropped = crop_image(orig, ptop, pleft, sheight, swidth); |
| | | float dx = ((float)pleft/ow)/sx; |
| | | float dy = ((float)ptop /oh)/sy; |
| | | |
| | | free_image(orig); |
| | | image sized = resize_image(cropped, h, w); |
| | | free_image(cropped); |
| | | if(flip) flip_image(sized); |
| | | d.X.vals[i] = sized.data; |
| | | |
| | | fill_truth_detection(random_paths[i], d.y.vals[i], classes, num_boxes, flip, background, dx, dy, 1./sx, 1./sy); |
| | | } |
| | | d.X.cols = (h-jitter)*(w-jitter)*3; |
| | | free(random_paths); |
| | | return d; |
| | | } |
| | |
| | | { |
| | | printf("Loading data: %d\n", rand()); |
| | | struct load_args a = *(struct load_args*)ptr; |
| | | *a.d = load_data_detection_jitter_random(a.n, a.paths, a.m, a.classes, a.h, a.w, a.nh, a.nw, a.jitter); |
| | | *a.d = load_data_detection_jitter_random(a.n, a.paths, a.m, a.classes, a.h, a.w, a.num_boxes, a.background); |
| | | translate_data_rows(*a.d, -128); |
| | | scale_data_rows(*a.d, 1./128); |
| | | free(ptr); |
| | | return 0; |
| | | } |
| | | |
| | | pthread_t load_data_detection_thread(int n, char **paths, int m, int classes, int h, int w, int nh, int nw, int jitter, data *d) |
| | | pthread_t load_data_detection_thread(int n, char **paths, int m, int classes, int h, int w, int nh, int nw, int background, data *d) |
| | | { |
| | | pthread_t thread; |
| | | struct load_args *args = calloc(1, sizeof(struct load_args)); |
| | |
| | | args->w = w; |
| | | args->nh = nh; |
| | | args->nw = nw; |
| | | args->num_boxes = nw; |
| | | args->classes = classes; |
| | | args->jitter = jitter; |
| | | args->background = background; |
| | | args->d = d; |
| | | if(pthread_create(&thread, 0, load_detection_thread, args)) { |
| | | error("Thread creation failed"); |