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I tried using opencv-python to calibrate a charuco marker board. My code successfully detected the ArUco markers, but the interpolation calculation for corner points always returned (0, None, None)
. Attempting to set setLegacyPattern(True)
or False
still didn't work.
Here is my code
CHARUCOBOARD_ROWCOUNT = 11
CHARUCOBOARD_COLCOUNT = 8
SQUARE_LENGTH = 0.022
MARKER_LENGTH = 0.016
ARUCO_DICT = cv2.aruco.getPredefinedDictionary(cv2.aruco.DICT_4X4_1000)
charuco_board = cv2.aruco.CharucoBoard(
(CHARUCOBOARD_COLCOUNT, CHARUCOBOARD_ROWCOUNT), SQUARE_LENGTH, MARKER_LENGTH, ARUCO_DICT
)
charuco_board.setLegacyPattern(True)
image_files = glob.glob('calibration_images_aruco/*.jpg')
all_corners = []
all_ids = []
image_size = None
for image_file in image_files:
image = cv2.imread(image_file)
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)
corners, ids, rejected = cv2.aruco.detectMarkers(gray, ARUCO_DICT)
cv2.aruco.drawDetectedMarkers(image, corners, ids)
if len(corners) > 0:
criteria = (cv2.TERM_CRITERIA_EPS + cv2.TERM_CRITERIA_MAX_ITER, 100, 0.00001)
for corner in corners:
cv2.cornerSubPix(gray, corner, winSize=(3, 3), zeroZone=(-1, -1), criteria=criteria)
ret, charuco_corners, charuco_ids = cv2.aruco.interpolateCornersCharuco(
corners, ids, gray, charuco_board
)
print(ret,charuco_corners,charuco_ids)
if ret > 0:
all_corners.append(charuco_corners)
all_ids.append(charuco_ids)
if image_size is None:
image_size = gray.shape[::-1]
cv2.imshow("Image", image)
run it and shows
0 None None
0 None None
...
here is my env
python 3.10.16
opencv-contrib-python 4.10.0.84
opencv-python 4.10.0.84
here is my it images(1920x1080)
i also tried (640x480),(1080x720),but get the same results
origional image
image with conermarkers
本文标签: pythoninterpolateCornersCharuco cant find conrnersStack Overflow
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