Python cv2.CALIB_CB_FAST_CHECK Examples

The following are 2 code examples of cv2.CALIB_CB_FAST_CHECK(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module cv2 , or try the search function .
Example #1
Source File: stereo_cameras.py    From StereoVision with GNU General Public License v3.0 7 votes vote down vote up 
def get_chessboard(self, columns, rows, show=False):
        """
        Take a picture with a chessboard visible in both captures.

        ``columns`` and ``rows`` should be the number of inside corners in the
        chessboard's columns and rows. ``show`` determines whether the frames
        are shown while the cameras search for a chessboard.
        """
        found_chessboard = [False, False]

        # Placeholder for corners
        found_corners = [None, None]

        while not all(found_chessboard):
            frames = self.get_frames()
            if show:
                self.show_frames(1)
            for i, frame in enumerate(frames):
                (found_chessboard[i],
                 found_corners[i]) = cv2.findChessboardCorners(frame, (columns, rows),
                                                  flags=cv2.CALIB_CB_FAST_CHECK)
        return frames, found_corners
Example #2
Source File: calibrate.py    From depthai with MIT License 5 votes vote down vote up 
def find_chessboard(frame):
    chessboard_flags = cv2.CALIB_CB_ADAPTIVE_THRESH + cv2.CALIB_CB_FAST_CHECK + cv2.CALIB_CB_NORMALIZE_IMAGE
    small_frame = cv2.resize(frame, (0, 0), fx=0.3, fy=0.3)
    return cv2.findChessboardCorners(small_frame, (9, 6), chessboard_flags)[0] and \
           cv2.findChessboardCorners(frame, (9, 6), chessboard_flags)[0]