detect_lines1     522 lib/gocr/detect.c     return detect_lines1(p,x0-0*1,y0-0*2,dx+0*2,dy+0*3);
detect_lines1     702 lib/gocr/detect.c     detect_lines1(pp, 0, 0, pp->x, pp->y);	// old algo
detect_lines1      69 lib/gocr/pgm2asc.h int detect_lines1(pix * p, int x0, int y0, int dx, int dy);