draw circle with opencv code example

Example 1: draw circle opencv

cv.line(img,(0,0),(511,511),(255,0,0),5)

Example 2: open cv draw

cv2.circle(img, center, radius, color[, thickness[, lineType[, shift]]])

Example 3: draw circle opencv

cv.circle(img,(447,63), 63, (0,0,255), -1)