1. createTrackbar是Opencv中的API,其可在显示图像的窗口中快速创建一个滑动控件,用于手动调节阈值,具有非常直观的效果。具体定义如下: CV_EXPORTSintcreateTrackbar(conststring& trackbarname,conststring& winname,int*value,intcount, TrackbarCallback onChange =0,void* userdata =0); 形式参数一、trackbarname:滑动...
cvNamedWindow("Contours",1); cvCreateTrackbar("Threshold","Contours",&g_thresh,300,on_trackbar); on_trackbar(0); cvWaitKey(0); printf("HELLO"); return 0; } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. 21. 22. 23. 24. 25. 26. 2...
namedWindow("效果图", WINDOW_AUTOSIZE); createTrackbar("负差最大值", "效果图", &g_nLowDifference, 255, 0);//创建正/负差值轨迹条 createTrackbar("正差最大值", "效果图", &g_nLowDifference, 255, 0); setMouseCallback("效果图", onMouse, 0);//鼠标回调函数 while (1) { imshow("效...
("xuenai_harris"); createTrackbar("threshold","xuenai_harris", nullptr,255); while (1) { int thres = getTrackbarPos("threshold", "xuenai_harris"); if(thres==0)thres=100; Mat harris_result=xuenai.clone(); for(int i=0;i<xuenai_harris.rows;i++){ uchar * ptr =xuenai_harris....
cvCreateTrackbar("Trackbar Name", "Window Name", &g_slider_position, frames, onTrackbarSlide); } //捕获、播放视频 IplImage* frame; while (1) { frame = cvQueryFrame(g_capture); if (!frame) break; //获取视频播放位置 int trapos = (int)cvGetCaptureProperty(g_capture, CV_CAP_PROP_POS_FRAM...
VMKEY 5F29M-48312-8ZDF9-A8A5K-2AM0Z 1Y0W5-0W205-7Z8J0-C8C5M-9A6MF 读取文件 #include <opencv2\highgui\highgui.hpp> #include <iostream> using namespace cv; using namespace std; int main(int argc, const char** argv) { Mat img = imread("f:\\img\\lena.jpg"); ...
cv.createTrackbar("lightness","input",0,100,nothing)#创建一个名为lightness的trackbar,窗口与创建窗口一致。0-100,无回调 cv.imshow("input", image) blank=np.zeros_like(image)#创建一个和image同尺寸的blank空白窗口 while True: pos=cv.getTrackbarPos("lightness","input")#拖动第几个TrackBar,TrackBar...
createTrackbar("Num Corners:", output_title, &num_corners, max_corners, ShiTomas_Demo); ShiTomas_Demo(0, 0); waitKey(0); return 1; } void ShiTomas_Demo(int, void*) { if (num_corners < 5) { num_corners = 5; } vector<Point2f>corners; ...
("input", cv.WINDOW_AUTOSIZE) cv.createTrackbar("Threshold", "input", 0, 255,do_nothing) # tracebar_name window_name value取值 count最大值 onchange是callback的方法 while True: threshold=cv.getTrackbarPos("Threshold", "input") ret, dst = cv.threshold(src, threshold, 255, cv.THRESH_...
createTrackbar("亮度调整: ", "亮度调整", &lightness, max_value, on_track); on_track(50, 0); //固定写法 } //main.cpp int main() { cv::Mat src = imread("C:\\Users\\26961\\Desktop\\images\\dog.jpg"); if (src.empty()) { ...