安装环境

dlib

windows10安装dlib
在anaconda3下激活相应的环境

conda install -c conda-forge dlib

参考

脚本实现

from imutils.face_utils import FaceAligner
from imutils.face_utils import rect_to_bb
import argparse
import imutils
import dlib
import cv2ap = argparse.ArgumentParser()
ap.add_argument('-p','--shape-predictor',required=True,help='path to the landmark predictor')
ap.add_argument('-i','--image',required=True,help='path to the input image')
args = vars(ap.parse_args())detector = dlib.get_frontal_face_detector()
print(type(detector))
print(detector)
predictor = dlib.shape_predictor(args['shape_predictor'])
fa = FaceAligner(predictor, desiredFaceWidth=256)image = cv2.imread(args['image'])
image = imutils.resize(image, width=800)
print(type(image))
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)cv2.imshow('Input', image)
# cv2.waitKey(30)
rects = detector(gray, 2)for rect in rects:(x, y, w, h) = rect_to_bb(rect)faceOrig = imutils.resize(image[y:y+h, x:x+w], width=256)faceAligned = fa.align(image, gray, rect)cv2.imshow('Original',faceOrig)cv2.imshow('Aligned',faceAligned)cv2.waitKey(0)

运行代码

python align_faces.py -p shape_predictor_68_face_landmarks.dat -i images/1.jpg

检测器（shape_predictor_68_face_landmarks.dat）下载链接：
链接：https://pan.baidu.com/s/11Z9GTaNeTb-HbF6RPu0g4A
提取码：98rz

实现效果

在这里插入图片描述

运行问题

在这里插入图片描述
debug

Traceback (most recent call last):File "D:/BaiduNetdiskDownload/阶段6-人工智能项目实战/08_人脸识别项目/code/Day03/face-alignment/align_faces.py", line 35, in <module>faceAligned = fa.align(image, gray, rect)File "E:\anaconda3\envs\face\lib\site-packages\imutils\face_utils\facealigner.py", line 68, in alignM = cv2.getRotationMatrix2D(eyesCenter, angle, scale)
TypeError: Can't parse 'center'. Sequence item with index 0 has a wrong type

考虑先实现cv2.getRotationMatrix2D(eyesCenter, angle, scale)

# -- coding: utf-8 --
import cv2
import numpy as npimg = cv2.imread('images/1.jpg')  # 读入图像，(H, W, C)
rows, cols = img.shape[:2]  # 取前两个值（H，W）
print(rows, cols)# 第一个参数旋转中心，第二个参数旋转角度，第三个参数：缩放比例, 生成一２＊３的矩阵center = (cols / 2, rows / 2)  # 以图像中心为旋转中心
angle = 90  # 顺时针旋转90°
scale = 1  # 等比例旋转，即旋转后尺度不变M = cv2.getRotationMatrix2D(center, angle, scale)print(M)'''
[[ 6.123234e-17  1.000000e+00  2.135000e+02][-1.000000e+00  6.123234e-17  1.066500e+03]]
'''