Question

我是Python初学者。我设法制作了一个网络摄像头捕获程序，但是我想在此窗口中放一些文字。我找到了.putText（）方法。但是我无法正常工作。所以我知道我不应该这样做，但是我没有其他选择……这是完整的代码：

import cv2

video = cv2.VideoCapture(0)
a = 0
img_counter = 0
videoNpArr = cv2.imread("test-image.jpg")

while True:

    a = a + 1
    check, frame = video.read()

    print(check)
    print(frame)

    cv2.putText(videoNpArr, "Hello World!!!", (200, 200), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 255))

    cv2.imshow("Main frame thing", frame)

    # cv2.waitKey(0)
    key = cv2.waitKey(1)

    if key == ord('q'):
        break
    elif key == ord('i'):
        # SPACE pressed
        img_name = "opencv_frame_{}.png".format(img_counter)
        cv2.imwrite(img_name, frame)
        print("{} written!".format(img_name))
        img_counter += 1
    print(a)

video.release()
cv2.destroyAllWindows()

感谢您的帮助。 <3

Answer 1

更改

data.classID = id; new course(data).save((error) => { if(error){ console.log('oops! Could not save course'); } else { conn3.close(); } }); //update instructor's classID's variable in intructor database instructor.findOne({"instructorEmail":data.Instructor}, (err,x)=>{ var arr = x.classIDs; arr.push(id); instructor.findOneAndUpdate({"instructorEmail":data.Instructor},{$set:{classIDs: arr}}); })

到

cv2.putText(videoNpArr, "Hello World!!!", (200, 200), cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 255))

Python cv2，将文字放到网络摄像头上

1 个答案: