OpenCV方向梯度直方圖HOG視頻中運動人體檢測，Python

OpenCV方向梯度直方圖HOG視頻中運動人體檢測，Python

假設需要把一段視頻中的處於運動（活動）的人體檢測出來並用框將人框起來：

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]))
 
    # 檢測視頻中的運動人體
    (rects, weights) = hog.detectMultiScale(image, winStride=(4, 4), padding=(8, 8), scale=1.05)
 
    pick = non_max_suppression(rects, probs=1, overlapThresh=0.15)
    
    # 畫框
    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鍵退出
    if cv2.waitKey(1) & 0xFF == ord("q"):
        break