Problem to crop the image

[zhouhao27]

Got the following error messgae:

No module named cv

Any idea? Thanks.

[zhouhao27]

After I change the script a bit:

import os
import sys
import json
import math
import cv2

It's ok to run. But I found a problem in:

moment = cv.Moments(points)

Then I change this to:

moment = cv2.moments(points)

I got this error:

TypeError: array is not a numpy array, neither a scalar

Apparently these two moments function are not the same.

Any idea?

[zhouhao27]

My code:

points = np.array([(x1,y1), (x2,y2), (x3,y3), (x4,y4)])
moment = cv2.moments(points)
centerx = int(round(moment['m10']/moment['m00']))
centery = int(round(moment['m01']/moment['m00']))

Solved the problem.