网站备案没有固定电话,建设银行网站设计特点,阜宁住房和城乡建设局网站,宣传部网站建设方案滑动轨迹栏作调色板
cv.createTrackbar(‘R’, ‘image’, 0, 255, nothing) 参数#xff1a;哪个滑动轨迹栏#xff0c;哪个窗口#xff0c;最小值#xff0c;最大值#xff0c;回调函数
cv.getTrackbarPos(‘R’, ‘image’) 参数#xff1a;轨迹栏名#xff0c;窗口…滑动轨迹栏作调色板
cv.createTrackbar(‘R’, ‘image’, 0, 255, nothing) 参数哪个滑动轨迹栏哪个窗口最小值最大值回调函数
cv.getTrackbarPos(‘R’, ‘image’) 参数轨迹栏名窗口名
import numpy as np
import cv2 as cvdef nothing(x):pass
img np.zeros((600, 512, 3), np.uint8)
cv.namedWindow(image, 0)cv.createTrackbar(R, image, 0, 255, nothing)
cv.createTrackbar(G, image, 0, 255, nothing)
cv.createTrackbar(B, image, 0, 255, nothing)switch OFF : ON
cv.createTrackbar(switch, image, 0, 1, nothing)while(1):cv.imshow(image, img)k cv.waitKey(1) 0xFFif k 27:breakr cv.getTrackbarPos(R, image)g cv.getTrackbarPos(G, image)b cv.getTrackbarPos(B, image)s cv.getTrackbarPos(switch, image)if s 0:img[:] 0else:img[:] [b, g, r] # *****************cv.destroyAllWindows()
