otsu               14 lib/gocr/otsu.h otsu (unsigned char *image, int rows, int cols, int x0, int y0, int dx, int dy, int vvv);
otsu             2673 lib/gocr/pgm2asc.c     job->cfg.cs=otsu( pp->p,pp->y,pp->x,0,0,pp->x,pp->y, job->cfg.verbose & 1 );