Python人脸识别 Python人脸识别初探
_Rick_ 人气:0想了解Python人脸识别初探的相关内容吗,_Rick_在本文为您仔细讲解Python人脸识别的相关知识和一些Code实例,欢迎阅读和指正,我们先划重点:Python,人脸识别,下面大家一起来学习吧。
1.利用opencv库
sudo apt-get install libopencv-* sudo apt-get install python-opencv sudo apt-get install python-numpy
2 .Python实现
import os import os from PIL import Image,ImageDraw import cv def detect_object(image): grayscale = cv.CreateImage((image.width,image.height),8,1)#创建空的灰度值图片 cv.CvtColor(image,grayscale,cv.CV_BGR2GRAY) cascade=cv.Load("/usr/share/opencv/haarcascades/haarcascade_frontalface_alt_tree.xml")#记载特征值库,此目录下还有好多库可以选用 rect=cv.HaarDetectObjects(grayscale,cascade,cv.CreateMemStorage(),1.1,2,cv.CV_HAAR_DO_CANNY_PRUNING,(20,20)) result=[]#标记位置 for r in rect: result.append((r[0][0],r[0][1],r[0][0]+r[0][2],r[0][1]+r[0][3])) return result def process(infile): image = cv.LoadImage(infile) if image: faces = detect_object(image) im = Image.open(infile) path = os.path.abspath(infile) save_path = os.path.splitext(path)[0]+"_face" try: os.mkdir(save_path) except: pass if faces: draw = ImageDraw.Draw(im) count=0 for f in faces: count+=1 draw.rectangle(f,outline=(255,0,0)) a=im.crop(f) file_name=os.path.join(save_path,str(count)+".jpg") a.save(file_name) drow_save_path = os.path.join(save_path,"out.jpg") im.save(drow_save_path,"JPEG",quality=80) else: print "Error: cannot detect faces on %s" % infile if __name__ == "__main__": process("test3.jpg")
3.效果对比
4.参考资料
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