opencv 侧脸检测（opencv图像检测）

有anaconda、python、jupyter、tensorflow
pycharm 、hadoop、hive、hbase
pytorch 安装、python 爬虫、opencv
python pyspark 数据分析 数据可视化
spark数据分析
flink 数据分析
问题可以私信我，大家共同学习，互帮互助！！！

import cv2 as cv
import numpy as np

def face_detect_demo(image):
    gray = cv.cvtColor(image, cv.COLOR_BGR2GRAY)
    face_detector = cv.CascadeClassifier("./a.xml")
    faces = face_detector.detectMultiScale(gray, 1.1, 2)
    for x, y, w, h in faces:
        img = cv.rectangle(image, (x, y), (x + w, y + h), (0, 0, 255), 2)
    cv.imshow("result", image)
    # cv.imwrite('result.png', img)


print("--------- Python OpenCV Tutorial ---------")
src = cv.imread("./4.jpg")
src = cv.resize(src, (800, 800))
face_detect_demo(src)

cv.waitKey(0)
cv.destroyAllWindows()