def showConnectedComponents(binary_img):
w, h = binary_img.shape
color = []
color.append((0, 0, 0))
img_color = np.zeros((w, h, 3), dtype=np.uint8)
retval, labels, stats, centroids = cv2.connectedComponentsWithStats(binary_img)
for num in range(1,retval):
color_b = random.randint(0, 255)
color_g = random.randint(0, 255)
color_r = random.randint(0, 255)
color.append((color_b, color_g, color_r))
for x in range(w):
for y in range(h):
lable = labels[x,y]
img_color[x,y,:] = color[int(lable)]
imshow("img_color",img_color)