How can I sort contours from left to right and top to bottom?

Question

I am trying to build an character recognition program using Python. I am stuck on sorting the contours. I am using this page as a reference.

I managed to find the c

Answer 1

after finding the contours using contours=cv2.findContours(),use -

boundary=[]
for c,cnt in enumerate(contours):
    x,y,w,h = cv2.boundingRect(cnt)
    boundary.append((x,y,w,h))
count=np.asarray(boundary)
max_width = np.sum(count[::, (0, 2)], axis=1).max()
max_height = np.max(count[::, 3])
nearest = max_height * 1.4
ind_list=np.lexsort((count[:,0],count[:,1]))

c=count[ind_list]

now c will be sorted in left to right and top to bottom.