OpenCV学习笔记——滑动条开关

由于opencv库中并没有专门为开关而设的函数，可以用滑动条做开关

代码：

#include<highgui.h>#include<cv.h>int g_switch_value = 0;IplImage *img;void switch_off_fcuntion();void switch_on_function();void switch_callback(int position){if (!position){switch_off_fcuntion();}else{switch_on_function();}}int main(void){cvNamedWindow("sample",1);cvCreateTrackbar("Switch", "sample", &g_switch_value, 1, switch_callback);//中间的数值用来自定义可变换区间长度while (1){if (cvWaitKey(15) == 27){cvReleaseImage(&img);cvDestroyAllWindows();break;}}return 0;}void switch_off_fcuntion(){puts("This is q1");img = cvLoadImage("q1.jpg", -1);cvShowImage("sample", img);puts("Q1");return;}void switch_on_function(){puts("This is q1");img = cvLoadImage("q2.jpg", -1);cvShowImage("sample", img);puts("Q2");return;}