segment.h

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#ifndef SEGMENT_H
#define SEGMENT_H
 
#include <stddef.h>
 
/* -------------------------------------------------------------------------
 * Types
 * ---------------------------------------------------------------------- */

typedef struct {
    int x;  
    int y;  
    int w;  
    int h;  
} BoundingBox;

typedef struct {
    BoundingBox *cells;  
    size_t       count;  
    int          cols;   
    int          rows;   
} SegmentResult;
 
/* -------------------------------------------------------------------------
 * Public API
 * ---------------------------------------------------------------------- */

SegmentResult *segment_image(const unsigned char *pixels,
                              int width, int height);

int segment_detect_grid(const unsigned char *pixels,
                         int width, int height, float min_span,
                         SegmentResult *out);

int segment_connected_components(const unsigned char *pixels,
                                  int width, int height,
                                  SegmentResult *out);

void segment_sort_reading_order(SegmentResult *res);

void segment_result_free(SegmentResult *res);
 
#endif /* SEGMENT_H */