def _get_corners(self, image):
"""Find subpixel chessboard corners in image."""
temp = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
ret, corners = cv2.findChessboardCorners(temp, (9, 6))
if not ret:
raise ChessboardNotFoundError("No chessboard could be found.")
cv2.cornerSubPix(
temp, corners, (11, 11), (-1, -1),
(cv2.TERM_CRITERIA_MAX_ITER + cv2.TERM_CRITERIA_EPS, 30, 0.01))
return corners
def _get_corners(self, image):
"""Find subpixel chessboard corners in image."""
temp = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
ret, corners = cv2.findChessboardCorners(temp,
(self.rows, self.columns), flags=cv2.CALIB_CB_FAST_CHECK)
if not ret:
raise ChessboardNotFoundError("No chessboard could be found.")
else:
print 'Chessboard found!'
cv2.cornerSubPix(temp, corners, (11, 11), (-1, -1),
(cv2.TERM_CRITERIA_MAX_ITER + cv2.TERM_CRITERIA_EPS,
30, 0.01))
return corners