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89 lines
2.1 KiB
C
89 lines
2.1 KiB
C
#ifndef DATA_H
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#define DATA_H
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#include <pthread.h>
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#include "matrix.h"
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#include "list.h"
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#include "image.h"
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extern unsigned int data_seed;
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static inline float distance_from_edge(int x, int max)
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{
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int dx = (max/2) - x;
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if (dx < 0) dx = -dx;
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dx = (max/2) + 1 - dx;
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dx *= 2;
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float dist = (float)dx/max;
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if (dist > 1) dist = 1;
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return dist;
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}
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typedef struct{
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matrix X;
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matrix y;
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int shallow;
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} data;
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typedef enum {
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CLASSIFICATION_DATA, DETECTION_DATA, CAPTCHA_DATA, REGION_DATA, IMAGE_DATA, COMPARE_DATA, WRITING_DATA
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} data_type;
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typedef struct load_args{
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char **paths;
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char *path;
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int n;
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int m;
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char **labels;
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int h;
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int w;
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int out_w;
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int out_h;
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int nh;
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int nw;
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int num_boxes;
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int classes;
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int background;
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float jitter;
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data *d;
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image *im;
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image *resized;
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data_type type;
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} load_args;
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typedef struct{
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int id;
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float x,y,w,h;
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float left, right, top, bottom;
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} box_label;
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void free_data(data d);
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pthread_t load_data_in_thread(load_args args);
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void print_letters(float *pred, int n);
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data load_data_captcha(char **paths, int n, int m, int k, int w, int h);
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data load_data_captcha_encode(char **paths, int n, int m, int w, int h);
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data load_data(char **paths, int n, int m, char **labels, int k, int w, int h);
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data load_data_detection(int n, char **paths, int m, int classes, int w, int h, int num_boxes, int background);
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box_label *read_boxes(char *filename, int *n);
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data load_cifar10_data(char *filename);
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data load_all_cifar10();
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data load_data_writing(char **paths, int n, int m, int w, int h, int out_w, int out_h);
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list *get_paths(char *filename);
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char **get_labels(char *filename);
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void get_random_batch(data d, int n, float *X, float *y);
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void get_next_batch(data d, int n, int offset, float *X, float *y);
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data load_categorical_data_csv(char *filename, int target, int k);
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void normalize_data_rows(data d);
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void scale_data_rows(data d, float s);
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void translate_data_rows(data d, float s);
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void randomize_data(data d);
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data *split_data(data d, int part, int total);
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data concat_data(data d1, data d2);
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#endif
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