img.copy_image()
img.acquire()
cv2.namedWindow('Invariant', cv2.WINDOW_NORMAL)
cv2.imshow('Invariant', img.invariant_image)
cv2.waitKey(0)
cv2.destroyAllWindows()
h = img.new_image.shape[0]
w = img.new_image.shape[1]
n = 2 # Number of roi's
size = np.array([[w / n], [h / n]], np.int32)
start = np.array([[0], [0]], np.int32)
# Create roi
roi = img.crop_image(start, size, img.new_image)
roi_prev = img.crop_image(start, size, img.prev_image)
match.match(roi, roi_prev)
print "good_matches bf", type(match.good_matches)
match.draw_matches(roi, match.good_matches)
cv2.namedWindow('roi', cv2.WINDOW_NORMAL)
cv2.imshow('roi', roi)
cv2.waitKey(0)
cv2.destroyAllWindows()
