Trackbar.py

最新推荐文章于 2024-02-18 16:28:41 发布

转载最新推荐文章于 2024-02-18 16:28:41 发布 · 503 阅读

OpenCV图像处理同时被 2 个专栏收录

164 篇文章

订阅专栏

Python

99 篇文章

订阅专栏

# -*- 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()