find_bibs.py 文件源码

def get_rectangles(contours):
  rectangles = []
  for contour in contours:
    epsilon = 0.04*cv2.arcLength(contour,True)
    hull = cv2.convexHull(contour)
    approx = cv2.approxPolyDP(hull,epsilon,True)
    if (len(approx) == 4 and cv2.isContourConvex(approx)):
        rectangles.append(approx)

  return rectangles