OpenCV方向梯度直方图HOG视频中运动人体检测，Python

OpenCV方向梯度直方图HOG视频中运动人体检测，Python

假设需要把一段视频中的处于运动（活动）的人体检测出来并用框将人框起来：

from imutils.object_detection import non_max_suppression
import numpy as np
import imutils
import cv2

hog = cv2.HOGDescriptor()
hog.setSVMDetector(cv2.HOGDescriptor_getDefaultPeopleDetector())

cap = cv2.VideoCapture('./test.mp4')
 
while True:
    ret, image = cap.read()
    # image = cv2.imread('./test.jpg')
    image = imutils.resize(image, width=min(300, image.shape[1]))
 
    # 检测视频中的运动人体
    (rects, weights) = hog.detectMultiScale(image, winStride=(4, 4), padding=(8, 8), scale=1.05)
 
    pick = non_max_suppression(rects, probs=1, overlapThresh=0.15)
    
    # 画框
    for (xA, yA, xB, yB) in pick:
        cv2.rectangle(image, (xA, yA), (xB, yB), (255, 0, 0), 2)

    cv2.imshow("people in video", image)
    #按q键退出
    if cv2.waitKey(1) & 0xFF == ord("q"):
        break