I am trying to make a cylinder in Virtual Reality using Aruco Markers. I have made cube easily as there were just 8 points to be ploted and converted to proper frame. But in the case of a cylinder, its base is a circle which has no corners. Am I using the wrong method to do the same? I feel so because I won't be able to extract so many points of the circle of the base of the cylinder.
def drawCylinder(img, ar_list, ar_id, camera_matrix, dist_coeff):
for x in ar_list:
if ar_id == x[0]:
centre = x[1]
rvec, tvec = x[2], x[3]
markerLength = 100
radius = int(markerLength/2)
height = markerLength*1.5 # Constraint on height of the Cylinder
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
aruco_dict = aruco.Dictionary_get(aruco.DICT_5X5_250)
parameters = aruco.DetectorParameters_create()
corners, ids, _ = aruco.detectMarkers(gray, aruco_dict, parameters=parameters)
pts = np.float32()
pt_dict = {}
imgpts, _ = cv2.projectPoints(pts, rvec, tvec, camera_matrix, dist_coeff)
imgpts = np.int32(imgpts).reshape(-1, 2)
# Confusion1: Make a set of points for a circle
points = [[x1,y1,z1],[x2,y2,z2]]
for i in range(len(pts)):
pt_dict[tuple(pts[i])] = tuple(imgpts[i].ravel())
points.append(pt_dict[tuple(pts[i])])
# Some code to convert points and plot them to Image which I know
return img
