cv.waitKey(0)#等待用户输入 cv.destroyAllWindows()#用户一旦输入任意键后,程序关闭窗口 执行结果如下 八、构建虚拟环境 我们手头可能有2个项目,项目A可能需要的opencv版本a可能和项目B需要的opencv版本,那么怎么办? 我们可以运行项目A时,按要求安装opencv版本a,运行项目B时,卸载opencv的版本a,再安装版本b,但是这...
prediction = model.predict(img) # Close all windows if one second has passed and ‘q’ is pressed if cv2.waitKey(1) & 0xFF == ord(‘q’): break # Release open connections cap. # Close all windows if one second has passed and ‘q’ is pressed if cv2.waitKey(1) & 0xFF == o...
cv2.VideoWriter:保存视频。 fourcc = cv2.VideoWriter_fourcc(*'XVID') out = cv2.VideoWriter('output_video.avi', fourcc, 20.0, (640, 480)) while cap.isOpened(): ret, frame = cap.read() if not ret: break out.write(frame) cap.release() out.release() cv2.destroyAllWindows()编辑...
cv.destroyAllWindows() #销毁所有窗口 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. 27. 28. 29. 30. 31. 32. 33. 34. 二:闭操作(先膨胀后腐蚀) 特点:可以填充闭合区域 def close_demo(image): gray = cv.cvt...
#闭运算:先膨胀,后腐蚀 img=cv2.imread('./dige.png') kernal=np.ones((5,5),np.uint8) closing=cv2.morphologyEx(img,cv2.MORPH_CLOSE,kernal) #cv2.MORPH_CLOSE闭运算 cv2.imshow('closing',closing) cv2.waitKey(0) cv2.destroyAllWindows() 1. 2. 3. 4. 5. 6. 7. 2.14 边缘检测-梯度运算...
import cv2import numpy as npo=cv2.imread("image\\closing.bmp",cv2.IMREAD_UNCHANGED)k=np.ones((5,5),np.uint8)r=cv2.morphologyEx(o,cv2.MORPH_CLOSE,k)cv2.imshow("original",o)cv2.imshow("result",r)cv2.waitKey()cv2.destroyAllWindows()结果如下：通过对比我们明显看到，前景内容中的黑点没了...
cv2.destroyAllWindows() cv2.morphologyEx(img, cv2.MORPH_CLOSE, kernel)函数。 五、形态学梯度 其实就是一幅图像膨胀与腐蚀的差别,结果看上去就像前景物体的轮廓。以原图一为例: importnumpyasnpimportcv2 img = cv2.imread('/home/wl/xing.jpg',0) ...
cgo_static_windows.go all: updates for OpenCV 4.11.0 Jan 13, 2025 codecov.yml add String method (#552) Dec 8, 2019 core.cpp added new Mat constructor and tests Dec 3, 2024 core.go added new Mat constructor and tests Dec 3, 2024 core.h added new Mat constructor and tests Dec 3, ...
#include<opencv2/opencv.hpp>#include<iostream>using namespace cv;using namespace std;voidvideo_demo();intmain(int argc,char**argv){Mat image=imread("lena.jpg",IMREAD_UNCHANGED);namedWindow("input",WINDOW_AUTOSIZE);imshow("input",image);waitKey(0);destroyAllWindows();return0;} ...
cv2.putText(img,"Name: Unknown", (x, y + h +30), font,0.4, (0,0,255),1) cv2.rectangle(img,(x,y),(x+w,y+h),(0,255,0),2) cv2.imshow('Preview',img)#Display the Videocv2.waitKey(1)# When everything done, release the capturecap.release() cv2.destroyAllWindows()...