Trackbar.py 约定不等于承诺〃 2022-07-13 02:42 99阅读 0赞 \# -\*- coding: utf-8 -\*- """ Created on Sun Jan 5 13:51:34 2014 @author: duan """ import cv2 import numpy as np def nothing(x): pass \# 创建一副黑色图像 img=np.zeros((300,512,3),np.uint8) cv2.namedWindow('image') cv2.createTrackbar('R','image',0,255,nothing) cv2.createTrackbar('G','image',0,255,nothing) cv2.createTrackbar('B','image',0,255,nothing) switch='0:OFF\\n1:ON' cv2.createTrackbar(switch,'image',0,1,nothing) while(1): cv2.imshow('image',img) k=cv2.waitKey(1)&0xFF if k==27: break r=cv2.getTrackbarPos('R','image') g=cv2.getTrackbarPos('G','image') b=cv2.getTrackbarPos('B','image') s=cv2.getTrackbarPos(switch,'image') if s==0: img\[:\]=0 else: img\[:\]=\[b,g,r\] cv2.destroyAllWindows()
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