util.h

//
//  util.h
//  dsptest1
//
//  Created by Lieven Govaerts on 14/12/12.
//
//

#ifndef dsptest1_util_h
#define dsptest1_util_h

#define LOG_BB 1
#define LOG_OCR 1
#define LOG_TEST 1

void dsptest_log(int verbose_flag, const char *filename, const char *fmt, ...);

/* Connected components and bounding boxes */

@interface conn_box_t : NSObject {
    @public     // TODO: change all these to properties
	short int xmin;
	short int xmax;
	short int ymin;
    short int ymax;
    short int r,g,b,e; /* 4 colors representing 'canny' edges. */

    /* collection of lines of connected pixels */
    NSMutableArray *lines;

    /* Image buffer for this box, 8 bits per pixel. */
    unsigned char *img;

    conn_box_t *dontMergeWith;
}
@end

void binarization_bounding_boxes(const unsigned char *inlum,
                                 const NSArray* comps,
                                 int width, int height);
NSArray* group_into_characters(const NSArray* comps, int width, int height);
NSArray* group_into_lines(const NSArray* comps, int width, int height);
void log_bounding_boxes(const NSArray* comps);
NSArray* connected_binary(const unsigned char *inptr, int width, int height);
char* filter_ocr_string(const char *txt);
void make_boxes_black_on_white_bg(const NSArray* comps);

/* for debugging only */
NSArray* remove_too_small(const NSArray* comps, int minWidth, int minHeight);

#endif