做眼镜识别的人脸检测

需要的检测工具dlib，有c++也有python

# created at 2018-01-22
# updated at 2018-09-29
# Author:   coneypo
# Blog:     http://www.cnblogs.com/AdaminXie
# GitHub:   https://github.com/coneypo/Dlib_face_cut
import dlib         # 人脸识别的库dlib
import numpy as np  # 数据处理的库numpy
import cv2          # 图像处理的库OpenCv
import os
# 读取图像的路径
path_read = "./data/images/faces_for_test/1/2/"
# 用来存储生成的单张人脸的路径
path_save = "./data/images/2/"
# Delete old images
def clear_images():
    imgs = os.listdir(path_save)
    for img in imgs:
        os.remove(path_save + img)
    print("clean finish", '\n')
clear_images()
# Dlib 预测器
detector = dlib.get_frontal_face_detector()
predictor = dlib.shape_predictor('data/dlib/shape_predictor_68_face_landmarks.dat')
# Dlib 检测
jj=1
for i in os.listdir(path_read):
    path_1read=path_read+i
    print(path_1read)
    img = cv2.imread(path_1read)
    jj=jj+1
    faces = detector(img, 1)
    print("人脸数：", len(faces), '\n')
    for k, d in enumerate(faces):
    # 计算矩形大小
    # (x,y), (宽度width, 高度height)
       pos_start = tuple([d.left(), d.top()])
       pos_end = tuple([d.right(), d.bottom()])
    # 计算矩形框大小
       height = d.bottom()-d.top()
       width = d.right()-d.left()
    # 根据人脸大小生成空的图像
       img_blank = np.zeros((height, width, 3), np.uint8)
       for i in range(height):
          for j in range(width):
                img_blank[i][j] = img[d.top()+i][d.left()+j]
    # cv2.imshow("face_"+str(k+1), img_blank)
    # 存在本地
       print("Save to:", path_save+"img_face_"+str(k+1)+".jpg")
       cv2.imwrite(path_save+"img_face_"+str(k+1)+"_"+str(jj)+".jpg", img_blank)

有时候会出现错误，

错误原因，检测位置在图片外面，这时保存图像的时候，会出现移除错误，一般把图像删除就好。