From d1d56a2a72247ef080eb124ce6605f3218ce4295 Mon Sep 17 00:00:00 2001
From: Joseph Redmon <pjreddie@gmail.com>
Date: Fri, 10 Jul 2015 23:38:07 +0000
Subject: [PATCH] Added alexnet cfg
---
src/data.c | 81 ++++++++++++++++++++++++++++++++++++++--
1 files changed, 76 insertions(+), 5 deletions(-)
diff --git a/src/data.c b/src/data.c
index 6a111de..dafcc98 100644
--- a/src/data.c
+++ b/src/data.c
@@ -8,7 +8,7 @@
unsigned int data_seed;
-struct load_args{
+typedef struct load_args{
char **paths;
int n;
int m;
@@ -22,7 +22,10 @@
int classes;
int background;
data *d;
-};
+ char *path;
+ image *im;
+ image *resized;
+} load_args;
list *get_paths(char *filename)
{
@@ -49,6 +52,33 @@
return random_paths;
}
+char **find_replace_paths(char **paths, int n, char *find, char *replace)
+{
+ char **replace_paths = calloc(n, sizeof(char*));
+ int i;
+ for(i = 0; i < n; ++i){
+ char *replaced = find_replace(paths[i], find, replace);
+ replace_paths[i] = copy_string(replaced);
+ }
+ return replace_paths;
+}
+
+matrix load_image_paths_gray(char **paths, int n, int w, int h)
+{
+ int i;
+ matrix X;
+ X.rows = n;
+ X.vals = calloc(X.rows, sizeof(float*));
+ X.cols = 0;
+
+ for(i = 0; i < n; ++i){
+ image im = load_image(paths[i], w, h, 1);
+ X.vals[i] = im.data;
+ X.cols = im.h*im.w*im.c;
+ }
+ return X;
+}
+
matrix load_image_paths(char **paths, int n, int w, int h)
{
int i;
@@ -165,10 +195,12 @@
w = constrain(0, 1, w);
h = constrain(0, 1, h);
- if (w == 0 || h == 0) continue;
+ if (w < .01 || h < .01) continue;
if(1){
- w = sqrt(w);
- h = sqrt(h);
+ //w = sqrt(w);
+ //h = sqrt(h);
+ w = pow(w, 1./2.);
+ h = pow(h, 1./2.);
}
int index = (i+j*num_boxes)*(4+classes+background);
@@ -439,6 +471,30 @@
return d;
}
+void *load_image_in_thread(void *ptr)
+{
+ load_args a = *(load_args*)ptr;
+ free(ptr);
+ *(a.im) = load_image_color(a.path, 0, 0);
+ *(a.resized) = resize_image(*(a.im), a.w, a.h);
+ return 0;
+}
+
+pthread_t load_image_thread(char *path, image *im, image *resized, int w, int h)
+{
+ pthread_t thread;
+ struct load_args *args = calloc(1, sizeof(struct load_args));
+ args->path = path;
+ args->w = w;
+ args->h = h;
+ args->im = im;
+ args->resized = resized;
+ if(pthread_create(&thread, 0, load_image_in_thread, args)) {
+ error("Thread creation failed");
+ }
+ return thread;
+}
+
void *load_localization_thread(void *ptr)
{
printf("Loading data: %d\n", rand_r(&data_seed));
@@ -495,6 +551,21 @@
return thread;
}
+data load_data_writing(char **paths, int n, int m, int w, int h)
+{
+ if(m) paths = get_random_paths(paths, n, m);
+ char **replace_paths = find_replace_paths(paths, n, ".png", "-label.png");
+ data d;
+ d.shallow = 0;
+ d.X = load_image_paths(paths, n, w, h);
+ d.y = load_image_paths_gray(replace_paths, n, w/8, h/8);
+ if(m) free(paths);
+ int i;
+ for(i = 0; i < n; ++i) free(replace_paths[i]);
+ free(replace_paths);
+ return d;
+}
+
data load_data(char **paths, int n, int m, char **labels, int k, int w, int h)
{
if(m) paths = get_random_paths(paths, n, m);
--
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