OPENCV运动检测，但仅检测到一次命令一次

Question

目前，当检测到运动时，始终执行打印命令（第 24 行）。但我希望打印命令在运动检测后只执行一次。有谁知道如何做到这一点？我是 python 新手。

这是我的代码：

import cv2

capture = cv2.VideoCapture(0)

while capture.isOpened():
    _, img_1 = capture.read()
    _, img_2 = capture.read()

    diff = cv2.absdiff(img_1, img_2)

    diff_gray = cv2.cvtColor(diff, cv2.COLOR_BGR2GRAY)

    diff_blur = cv2.GaussianBlur(diff_gray, (5, 5), 0)

    _, thresh_bin = cv2.threshold(diff_blur, 20, 255, cv2.THRESH_BINARY)

    contours, hierarchy = cv2.findContours(thresh_bin, cv2.RETR_TREE, cv2.CHAIN_APPROX_SIMPLE)

    # to draw the bounding box when the motion is detected
    for contour in contours:
        x, y, w, h = cv2.boundingRect(contour)
        if cv2.contourArea(contour) > 300:
            cv2.rectangle(img_1, (x, y), (x+w, y+h), (0, 255, 0), 2)
        print("Motion detected!") #This is the print Command (line 24)

    cv2.imshow("Detecting Motion...", img_1)
    if cv2.waitKey(100) == 13:
        exit()

Answer 1

同样的问题。。你解决了吗？