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data_weibo_process.py
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# -*- coding: utf-8 -*-
"""
Created on Sun Apr 12 14:29:55 2020
@author: dell
"""
# -*- codeing: utf-8 -*-
import sys
import os
import cv2
import dlib
#准备好的数据集 '../zhengshuang_weibo'
input_dir = './raw_data/liuchang'
#输出路径
output_dir = './out_data/liuchang'
size = 128
if not os.path.exists(output_dir):
os.makedirs(output_dir)
#使用dlib自带的frontal_face_detector作为我们的特征提取器
detector = dlib.get_frontal_face_detector()
index = 1
for (path, dirnames, filenames) in os.walk(input_dir):
for filename in filenames:
if filename.endswith('.jpg'):
print('Being processed picture %s' % index)
img_path = path+'/'+filename
# 从文件读取图片
img = cv2.imread(img_path)
# 转为灰度图片
gray_img = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
# 使用detector进行人脸检测 dets为返回的结果
dets = detector(gray_img, 1)
#使用enumerate 函数遍历序列中的元素以及它们的下标
#i为索引,d为值
#left:人脸左边距离图片左边界的距离 ;right:人脸右边距离图片左边界的距离
#top:人脸上边距离图片上边界的距离 ;bottom:人脸下边距离图片上边界的距离
for i, d in enumerate(dets):
top = d.top() if d.top() > 0 else 0
bottom = d.bottom() if d.bottom() > 0 else 0
left = d.left() if d.left() > 0 else 0
right = d.right() if d.right() > 0 else 0
# img[y:y+h,x:x+w]
face = img[top:bottom,left:right]
# 调整图片的尺寸至64*64
face = cv2.resize(face, (size,size))
cv2.imshow('image',face)
# 保存图片
cv2.imwrite(output_dir+'/'+str(index)+'.jpg', face)
index += 1
key = cv2.waitKey(30) & 0xff
if key == 27:
sys.exit(0)