hough2 = Hough(im_h2.size)
im_hough2 = hough2.transform(im_h2)
if show_all:
im_debug.show(im_hough2, "second hough transform")
hough2 = Hough(im_h2.size)
im_hough2 = hough2.transform(im_h2)
if show_all:
im_debug.show(im_hough2, "second hough transform")