cv2.imshow("BGR", imgname)
cv2.waitKey(0)
cv2.destroyAllWindows()
cv2.namedWindow('BGR', 0)
cv2.imshow("BGR", imgname)
cv2.waitKey(0)
cv2.destroyAllWindows()
cv2.namedWindow('BGR', 0)
cv2.resizeWindow('BGR', X, Y)
cv2.imshow("BGR", imgname)
cv2.waitKey(0)
cv2.destroyAllWindows()