【Python深度学习】Tensorflow+CNN进行人脸识别实战（附源码和数据集） 【Python深度学习】Tensorflow+CNN进行人脸识别实战（附源码和数据集）

需要源码和数据集请点赞关注收藏后评论区留言私信~~~

下面利用tensorflow平台进行人脸识别实战，使用的是Olivetti Faces人脸图像 部分数据集展示如下

 程序训练过程如下

 接下来训练CNN模型 可以看到训练进度和损失值变化

接下来展示人脸识别结果

程序会根据一张图片自动去图片集中寻找相似的人脸 如上图所示

部分代码如下 需要全部源码和数据集请点赞关注收藏后评论区留言私信~~~

from os import listdir
import numpy as np
from PIL import Image
import cv2
from tensorflow.keras.models import Sequential, load_model
from tensorflow.keras.layers import Dense, Activation, Convolution2D, MaxPooling2D, Flatten
from sklearn.model_selection import train_test_split
from tensorflow.python.keras.utils import np_utils
# 读取人脸图片数据
def img2vector(fileNamestr):
 # 创建向量
 returnVect = np.zeros((57,47)) 
 image = Image.open(fileNamestr).convert('L') 
 img = np.asarray(image).reshape(57,47) 
 return img
# 制作人脸数据集
def GetDataset(imgDataDir): 
 print('| Step1 |: Get dataset...')
 imgDataDir='faces_4/'
 FileDir = listdir(imgDataDir)
 m = len(FileDir)
 imgarray=[]
 hwLabels=[]
 hwdata=[]
 # 逐个读取图片文件
 for i in range(m):
 # 提取子目录
 className=i
 subdirName='faces_4/'+str(FileDir[i])+'/'
 fileNames = listdir(subdirName) 
 lenFiles=len(fileNames)
 # 提取文件名
 for j in range(lenFiles): 
 fileNamestr = subdirName+fileNames[j]
 hwLabels.append(className) 
 imgarray=img2vector(fileNamestr)
 hwdata.append(imgarray)
 hwdata = np.array(hwdata)
 return hwdata,hwLabels,6
# CNN模型类
class MyCNN(object):
 FILE_PATH = "face_recognition.h5" # 模型存储/读取目录
 picHeight = 57 # 模型的人脸图片长47，宽57
 picWidth = 47 
 def __init__(self):
 self.model = None
 # 获取训练数据集
 def read_trainData(self, dataset): 
 self.dataset = dataset
 # 建立Sequential模型，并赋予参数
 def build_model(self):
 print('| Step2 |: Init CNN model...')
 self.model = Sequential()
 print('self.dataset.X_train.shape[1:]',self.dataset.X_train.shape[1:])
 self.model.add( Convolution2D( filters=32,
 kernel_size=(5, 5),
 padding='same',
 #dim_ordering='th',
 input_shape=self.dataset.X_train.shape[1:]))
 self.model.add(Activation('relu'))
 self.model.add( MaxPooling2D(pool_size=(2, 2),
 strides=(2, 2),
 padding='same' ) )
 self.model.add(Convolution2D(filters=64, 
 kernel_size=(5, 5), 
 padding='same') )
 self.model.add(Activation('relu'))
 self.model.add(MaxPooling2D(pool_size=(2, 2), 
 strides=(2, 2), 
 padding='same') )
 self.model.add(Flatten())
 self.model.add(Dense(512))
 self.model.add(Activation('relu'))
 self.model.add(Dense(self.dataset.num_classes))
 self.model.add(Activation('softmax'))
 self.model.summary()
 # 模型训练
 def train_model(self):
 print('| Step3 |: Train CNN model...')
 self.model.compile( optimizer='adam', loss='categorical_crossentropy', metrics=['accuracy'])
 # epochs：训练代次、batch_size：每次训练样本数
 self.model.fit(self.dataset.X_train, self.dataset.Y_train, epochs=10, batch_size=20)
 def evaluate_model(self):
 loss, accuracy = self.model.evaluate(self.dataset.X_test, self.dataset.Y_test)
 print('| Step4 |: Evaluate performance...')
 print('===================================') 
 print('Loss Value is :', loss)
 print('Accuracy Value is :', accuracy)
 def save(self, file_path=FILE_PATH): 
 print('| Step5 |: Save model...')
 self.model.save(file_path)
 print('Model ',file_path,'is succeesfuly saved.')
# 建立一个用于存储和格式化读取训练数据的类
class DataSet(object):
 def __init__(self, path):
 self.num_classes = None
 self.X_train = None
 self.X_test = None
 self.Y_train = None
 self.Y_test = None
 self.picWidth = 47
 self.picHeight = 57 
 self.makeDataSet(path) # 在这个类初始化的过程中读取path下的训练数据
 def makeDataSet(self, path):
 # 根据指定路径读取出图片、标签和类别数
 imgs, labels, clasNum = GetDataset(path)
 # 将数据集打乱随机分组
 X_train, X_test, y_train, y_test = train_test_split(imgs, labels, test_size=0.2,random_state=1)
 # 重新格式化和标准化
 X_train = X_train.reshape(X_train.shape[0], 1, self.picHeight, self.picWidth) / 255.0
 X_test = X_test.reshape(X_test.shape[0], 1, self.picHeight, self.picWidth) / 255.0
 X_train = X_train.astype('float32')
 X_test = X_test.astype('float32')
 # 将labels转成 binary class matrices
 Y_train = np_utils.to_categorical(y_train, num_classes=clasNum)
 Y_test = np_utils.to_categorical(y_test, num_classes=clasNum)
 # 将格式化后的数据赋值给类的属性上
 self.X_train = X_train
 self.X_test = X_test
 self.Y_train = Y_train
 self.Y_test = Y_test
 self.num_classes = clasNum
# 人脸图片目录
dataset = DataSet('faces_4/')
model = MyCNN()
model.read_trainData(dataset)
model.build_model()
model.train_model()
model.evaluate_model()
model.save()

 创作不易 觉得有帮助请点赞关注收藏~~~