uint8

---------------------------------------------------------------------------
NameError                                 Traceback (most recent call last)
<ipython-input-63-33c069b700f4> in <module>()
    121     return line_img
    122
--> 123 ht=hough_lines(reg,1,np.pi/180,1,25,10)
    124 plt.imshow(ht)
    125 plt.show()

<ipython-input-63-33c069b700f4> in hough_lines(reg, rho, theta, threshold, min_line_len, max_line_gap)
    118     lines = cv2.HoughLinesP(reg, rho, theta, threshold, minLineLength=min_line_len, maxLineGap=max_line_gap)
    119     line_img = np.zeros((reg.shape[0], reg.shape[1], 3), dtype=np.uint8)
--> 120     draw_lines(line_img, lines)
    121     return line_img
    122

<ipython-input-63-33c069b700f4> in draw_lines(masked, lines, color, thickness)
    100     for line in lines:
    101         for x1,y1,x2,y2 in line:
--> 102             cv2.line(line_image,(x1,y1),(x2,y2),(255,0,0),10)
    103     color_edges = np.dstack((edges, edges, edges))
    104     lines_edges = cv2.addWeighted(color_edges, 0.8, line_image, 1, 0)

NameError: name 'line_image' is not defined