int
main (int argc, char *argv[])
{
ho_pixbuf *pix = NULL;
ho_string *text = NULL;
int progress;
/* load the pnm picture pointed to by argv[1] */
/* NOTE: this function only load pnm images, you can use the hocr-gtk
* functions to load other image types */
pix = ho_pixbuf_pnm_load (argv[1]);
/* get a new text buffer */
text = ho_string_new ();
/* do ocr on picture */
/* NOTE: we do not use the progress indicator in this program. to use it,
* create a new thread and sample the value of progress periodically */
hocr_do_ocr (pix, text, 0, 0, 0, &progress);
/* print out the text */
printf ("%s\n", text->string);
/* free picture */
ho_pixbuf_free (pix);
/* free string */
ho_string_free (text);
return 0;
}
int
main (int argc, char * argv[]) {
ho_pixbuf * pix = NULL;
ho_pixbuf * pix_temp = NULL;
ho_objmap * obj = NULL;
ho_pixsum * sums = NULL;
int i;
/* read image and convert to bw */
/* ---------------------------- */
/* try to read pnm files */
pix = ho_pixbuf_pnm_load_path("./images/p6.pnm");
ho_pixbuf_pnm_save_path(pix, "t-p6.pnm");
/* convert image to gray and then to b/w */
ho_pixbuf_filter_gray(pix);
ho_pixbuf_filter_polarize(pix, 150);
ho_pixbuf_pnm_save_path(pix, "t-bw-p6.pnm");
/* run layout filters */
/* ------------------ */
/* filter by size */
ho_pixbuf_layout_filter (pix, 0, 10, 100, 10, 100);
/* smear image */
//ho_pixbuf_filter_hsmear (pix, 0, 0, 10, 0);
//ho_pixbuf_filter_vsmear (pix, 0, 0, 10, 0);
//ho_pixbuf_op_mov (pix, 0, 1);
/* create a sums transforamtion of pix */
sums = ho_pixsum_new(pix->width, pix->height);
ho_pixsum_from_pixbuf(sums, pix, 0);
/* segment the image verticaly using the sums map */
ho_pixbuf_layout_segment_vertical (pix, sums, 0,
0, 0, pix->width, pix->height, 0.05);
/* connect small gaps between vertical segments, using smear */
/* ho_pixbuf_filter_hsmear */
/* (pix = pix, chanel = 0, value = 255, gap = 5, moment = 0) */
ho_pixbuf_filter_hsmear (pix, 0, 0, 5, 0);
/* create objmap */
obj = ho_objmap_new(pix->width, pix->height);
ho_objmap_from_pixbuf (obj, pix, 0);
/* loop on all the objects and dump to disk */
for (i = 1; i <= ho_objmap_get_size(obj); i++) {
printf("o%d %d %d %d %d 0\n", i,
ho_objmap_get_object(obj,i).x,
pix->height - ho_objmap_get_object(obj,i).y - ho_objmap_get_object(obj,i).height,
ho_objmap_get_object(obj,i).x + ho_objmap_get_object(obj,i).width,
pix->height - ho_objmap_get_object(obj,i).y);
ho_pixbuf_layout_segment_horizontal (pix, sums, 0,
ho_objmap_get_object(obj,i).x, ho_objmap_get_object(obj,i).y,
ho_objmap_get_object(obj,i).width, ho_objmap_get_object(obj,i).height,
0.12);
}
//ho_pixbuf_filter_vsmear (pix, 1, 255, 5, 0);
//ho_pixbuf_layout_filter_by_height (pix, 1, 10, 120);
//ho_pixbuf_layout_smear(pix, 1, 10, 120);
/* draw a grid with: step_size=100, channel=1, value=0 */
ho_pixbuf_draw_grid (pix, 100, 2, 0);
/* save layout image */
ho_pixbuf_pnm_save_path(pix, "t-p6-layout.pnm");
ho_objmap_free(obj);
ho_pixbuf_free(pix_temp);
ho_pixbuf_free(pix);
return 0;
}
