人臉識別具體案例

更新時間：2021年04月16日 08:45:12 作者：ixobgnew

出于興趣和對IU的喜愛，筆者花了幾天嘗試用爬蟲從百度圖片獲取人物圖片并下載，利用深度神經(jīng)網(wǎng)絡(luò)從其中識別出人，并將圖片保存至文件夾。若讀者有興趣可以參考下

項目環(huán)境：python3.6

一、項目結(jié)構(gòu)

在這里插入圖片描述

二、數(shù)據(jù)集準(zhǔn)備

數(shù)據(jù)集準(zhǔn)備分為兩步：

獲取圖片.
提取人臉.

1、獲取圖片

首先可以利用爬蟲，從百度圖片上批量下載圖片，但注意下載數(shù)據(jù)集所用的關(guān)鍵詞不要和之后識別任務(wù)的關(guān)鍵詞太接近，否則若有圖片重合，就會產(chǎn)生“識別得很準(zhǔn)”的錯覺。下面的程序為爬蟲部分，在name.txt文件中寫好要搜索的關(guān)鍵詞，即可使用。

# 爬蟲部分，存放到 name + ‘文件'
    #############################################################################################
    if GET_PIC == 1:
        headers = {
            'Accept-Language': 'zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2',
            'Connection': 'keep-alive',
            'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0',
            'Upgrade-Insecure-Requests': '1'
        }
        A = requests.Session()
        A.headers = headers
        tm = int(input('請輸入每類圖片的下載數(shù)量 '))
        numPicture = tm
        line_list = []
        with open('./name.txt', encoding='utf-8') as file:
            line_list = [k.strip() for k in file.readlines()]  # 用 strip()移除末尾的空格
        for word in line_list:
            url = 'https://image.baidu.com/search/flip?tn=baiduimage&ie=utf-8&word=' + word + '&pn='
            tot = Find(url, A)
            Recommend = recommend(url)  # 記錄相關(guān)推薦
            print('經(jīng)過檢測%s類圖片共有%d張' % (word, tot))
            file = word + '文件'
            y = os.path.exists(file)
            if y == 1:
                print('該文件已存在，無需創(chuàng)建')
            else:
                os.mkdir(file)
            t = 0
            tmp = url
            while t < numPicture:
                try:
                    url = tmp + str(t)
                    # result = requests.get(url, timeout=10)
                    # 這里搞了下
                    result = A.get(url, timeout=10, allow_redirects=False)
                    print(url)
                except error.HTTPError as e:
                    print('網(wǎng)絡(luò)錯誤，請調(diào)整網(wǎng)絡(luò)后重試')
                    t = t + 60
                else:
                    dowmloadPicture(result.text, word)
                    t = t + 60
            numPicture = numPicture + tm
        print('當(dāng)前搜索結(jié)束，開始提取人臉')
    #############################################################################################

下載圖片時要注意區(qū)分，將IU的圖片放在一個文件夾下，Other的放在另一文件夾下。訓(xùn)練集和測試集都要如此。如下圖所示：

在這里插入圖片描述

每個文件夾內(nèi)都是下圖形式：

在這里插入圖片描述

對于文件夾內(nèi)文件的命名，可以利用以下這段程序，按順序重命名。

import os
raw_train_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/IU/'
raw_train_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/Other/'
raw_test_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/IU/'
raw_test_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/Other/'
raw_roots = [raw_train_root_1, raw_train_root_2, raw_test_root_1, raw_test_root_2]
for path in raw_roots:
    # 獲取該目錄下所有文件，存入列表中
    fileList = os.listdir(path)
    n = 0
    for i in fileList:
        # 設(shè)置舊文件名（就是路徑+文件名）
        oldname = path + os.sep + fileList[n]  # os.sep添加系統(tǒng)分隔符
        # 設(shè)置新文件名
        newname = path + os.sep + str(n) + '.JPG'
        os.rename(oldname, newname)  # 用os模塊中的rename方法對文件改名
        print(oldname, '======>', newname)
        n += 1

2.提取人臉

提取人臉，需要用到一個人臉識別庫face_recognition庫。face_recognition庫的下載步驟參考：

http://m.dhdzp.com/article/209870.htm

主要有三步，可以直接在anaconda的命令行界面復(fù)制使用：

pip install CMake -i https://pypi.douban.com/simple
pip install dlib==19.7.0 -i https://pypi.douban.com/simple
pip install face_recognition -i https://pypi.douban.com/simple

筆者已嘗試，確實(shí)可用。

使用下述的函數(shù)就可以獲得一張圖片對應(yīng)的人臉，返回值就是人臉圖片。

# 找到圖片中的人臉
#############################################################################################
def find_face(path):
    # Load the jpg file into a numpy array
    image = face_recognition.load_image_file(path)
    # Find all the faces in the image using the default HOG-based model.
    # This method is fairly accurate, but not as accurate as the CNN model and not GPU accelerated.
    # See also: find_faces_in_picture_cnn.py
    face_locations = face_recognition.face_locations(image) # 可以選擇 model="cnn"
    if len(face_locations) == 0:
        return None
    else:
        for face_location in face_locations:
            # Print the location of each face in this image
            top, right, bottom, left = face_location
            # You can access the actual face itself like this:
            face_image = image[top:bottom, left:right]
            pil_image = Image.fromarray(face_image)
            return pil_image
#############################################################################################

對數(shù)據(jù)集進(jìn)行操作之后，就可以獲得處理后的人臉圖片。之所以不用人物圖訓(xùn)練，而是提取出人臉后再進(jìn)行訓(xùn)練，是考慮到人物圖像中干擾因素太多，且經(jīng)過試驗后發(fā)現(xiàn)識別的效果非常差，于是加入這個提取人臉的環(huán)節(jié)。對數(shù)據(jù)集的操作代碼如下：

# 將訓(xùn)練集和測試集中的raw圖片處理，提取出人臉圖片
#############################################################################################
if __name__ == '__main__':  # 主函數(shù)入口
    raw_train_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/IU/'
    raw_train_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/Other/'
    raw_test_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/IU/'
    raw_test_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/Other/'
    raw_roots = [raw_train_root_1, raw_train_root_2, raw_test_root_1, raw_test_root_2]
    img_raw_train_1 = os.listdir(raw_train_root_1)
    img_raw_train_2 = os.listdir(raw_train_root_2)
    img_raw_test_1 = os.listdir(raw_test_root_1)
    img_raw_test_2 = os.listdir(raw_test_root_2)
    img_raws = [img_raw_train_1, img_raw_train_2, img_raw_test_1, img_raw_test_2]
    new_path_train_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/train/IU/'
    new_path_train_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/train/Other/'
    new_path_test_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/test/IU/'
    new_path_test_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/test/Other/'
    new_paths = [new_path_train_1, new_path_train_2, new_path_test_1, new_path_test_2]
    for raw_root, img_raw, new_path in zip(raw_roots, img_raws, new_paths):
        n = 0
        for i in range(len(img_raw)):
            try:
                img = Image.open(raw_root + img_raw[i])
            except:
                print('a file error, continue')
                continue
            else:
                img_train = find_face(raw_root + img_raw[i])
                if img_train == None:
                    continue
                else:
                    # img_train.save(new_path + '%d.JPG'%n)
                    # print(raw_root + img_raw[i])
                    n += 1
        print('在%d張圖片中，共找到%d張臉' % (len(img_raw), n))
#############################################################################################

處理前的圖片數(shù)據(jù)均存放在raw文件夾中，處理后的存放在processed文件夾中，如下圖：

在這里插入圖片描述

兩個文件夾的內(nèi)部結(jié)構(gòu)完全一樣：

在這里插入圖片描述

三、網(wǎng)絡(luò)模型

1、圖像處理

將圖片裁剪為112×92大小，使用RGB圖像，（這里試過用灰度圖像，但好像效果不會更好，就放棄了），在對圖片進(jìn)行歸一化處理。

data_transform = transforms.Compose([
        # transforms.Grayscale(num_output_channels=1),  # 彩色圖像轉(zhuǎn)灰度圖像num_output_channels默認(rèn)1
        transforms.Resize(112),
        transforms.CenterCrop((112, 92)),  # 中心裁剪為112*92
        transforms.ToTensor(),
        transforms.Normalize(mean=[0.5, 0.5, 0.5], std=[0.5, 0.5, 0.5])
        # transforms.Normalize(mean=0.5, std=0.5)
    ])

使用孿生神經(jīng)網(wǎng)絡(luò)(Siamese Network)

class SiameNetwork(nn.Module):
    def __init__(self):
        super(SiameNetwork, self).__init__()
        # input: h=112, w=92
        self.conv1 = torch.nn.Sequential(
            torch.nn.Conv2d(in_channels=3,  # 輸入單通道
                            out_channels=16,  # 16個3*3卷積核
                            kernel_size=3,  # 卷積核尺寸
                            stride=2,  # 卷積核滑動步長, 1的話圖片大小不變，2的話會大小會變?yōu)?h/2)*(w/2)
                            padding=1),  # 邊緣填充大小，如果要保持原大小，kernel_size//2
            torch.nn.BatchNorm2d(16),  # 標(biāo)準(zhǔn)化，前面卷積后有16個圖層
            torch.nn.ReLU()  # 激活函數(shù)
        )  # output: h=56, w=46
        self.conv2 = torch.nn.Sequential(
            torch.nn.Conv2d(16, 32, 3, 2, 1),
            torch.nn.BatchNorm2d(32),
            torch.nn.ReLU()
        )  # output: h=28, w=23
        self.conv3 = torch.nn.Sequential(
            torch.nn.Conv2d(32, 64, 3, 2, 1),
            torch.nn.BatchNorm2d(64),
            torch.nn.ReLU()
        )  # output: h=14, w=12
        self.conv4 = torch.nn.Sequential(
            torch.nn.Conv2d(64, 64, 2, 2, 0),
            torch.nn.BatchNorm2d(64),
            torch.nn.ReLU()
        )  # output: h=7, w=6
        self.mlp1 = torch.nn.Linear(7 * 6 * 64, 100)  # 需要計算conv4的輸出尺寸，每次卷積的輸出尺寸(size - kernal + 2*padding)/stride + 1
        self.mlp2 = torch.nn.Linear(100, 10)
    def forward(self, x):
        x = self.conv1(x)
        x = self.conv2(x)
        x = self.conv3(x)
        x = self.conv4(x)
        x = self.mlp1(x.view(x.size(0), -1))  # view展平
        x = self.mlp2(x)
        return x

四、具體代碼

1.get_face.py

from PIL import Image
import face_recognition
import os
# 找到圖片中的人臉
#############################################################################################
def find_face(path):
    # Load the jpg file into a numpy array
    image = face_recognition.load_image_file(path)
    # Find all the faces in the image using the default HOG-based model.
    # This method is fairly accurate, but not as accurate as the CNN model and not GPU accelerated.
    # See also: find_faces_in_picture_cnn.py
    face_locations = face_recognition.face_locations(image) # 可以選擇 model="cnn"
    if len(face_locations) == 0:
        return None
    else:
        for face_location in face_locations:
            # Print the location of each face in this image
            top, right, bottom, left = face_location
            # You can access the actual face itself like this:
            face_image = image[top:bottom, left:right]
            pil_image = Image.fromarray(face_image)
            return pil_image
#############################################################################################
# 將訓(xùn)練集和測試集中的raw圖片處理，提取出人臉圖片
#############################################################################################
if __name__ == '__main__':  # 主函數(shù)入口
    raw_train_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/IU/'
    raw_train_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/Other/'
    raw_test_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/IU/'
    raw_test_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/Other/'
    raw_roots = [raw_train_root_1, raw_train_root_2, raw_test_root_1, raw_test_root_2]
    img_raw_train_1 = os.listdir(raw_train_root_1)
    img_raw_train_2 = os.listdir(raw_train_root_2)
    img_raw_test_1 = os.listdir(raw_test_root_1)
    img_raw_test_2 = os.listdir(raw_test_root_2)
    img_raws = [img_raw_train_1, img_raw_train_2, img_raw_test_1, img_raw_test_2]
    new_path_train_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/train/IU/'
    new_path_train_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/train/Other/'
    new_path_test_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/test/IU/'
    new_path_test_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/test/Other/'
    new_paths = [new_path_train_1, new_path_train_2, new_path_test_1, new_path_test_2]
    for raw_root, img_raw, new_path in zip(raw_roots, img_raws, new_paths):
        n = 0
        for i in range(len(img_raw)):
            try:
                img = Image.open(raw_root + img_raw[i])
            except:
                print('a file error, continue')
                continue
            else:
                img_train = find_face(raw_root + img_raw[i])
                if img_train == None:
                    continue
                else:
                    # img_train.save(new_path + '%d.JPG'%n)
                    # print(raw_root + img_raw[i])
                    n += 1
        print('在%d張圖片中，共找到%d張臉' % (len(img_raw), n))
#############################################################################################

2.find_iu.py

import torch
import torchvision
import torch.nn as nn
from torch.autograd import Variable
from torchvision import datasets, transforms
from torch.utils.data import DataLoader
import cv2   #opencv庫，用于圖片可視化
import numpy as np
import os
from utils import draw_result
from network import SiameNetwork
from get_face import find_face
if __name__ == '__main__':  # 主函數(shù)入口
    # 設(shè)置參數(shù)
    #############################################################################################
    path = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/result/'    # 存放和生成結(jié)果的路徑標(biāo)志
    epochs = 20       #訓(xùn)練周期
    BATCH_SIZE = 16    #批量樣本大小
    NUM_WORKERS = 0
    #############################################################################################
    # 數(shù)據(jù)處理
    #############################################################################################
    data_transform = transforms.Compose([
        # transforms.Grayscale(num_output_channels=1),  # 彩色圖像轉(zhuǎn)灰度圖像num_output_channels默認(rèn)1
        transforms.Resize(112),
        transforms.CenterCrop((112, 92)),  # 中心裁剪為112*92
        transforms.ToTensor(),
        transforms.Normalize(mean=[0.5, 0.5, 0.5], std=[0.5, 0.5, 0.5])
        # transforms.Normalize(mean=0.5, std=0.5)
    ])
    train_dataset = datasets.ImageFolder(root = r'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/train',
                                         transform = data_transform)
    test_dataset = datasets.ImageFolder(root = r'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/processed/test',
                                         transform = data_transform)
    train_loader = DataLoader(train_dataset, batch_size=BATCH_SIZE, shuffle=True, num_workers=NUM_WORKERS)
    test_loader = DataLoader(test_dataset, batch_size=BATCH_SIZE, shuffle=True, num_workers=NUM_WORKERS)
    image, labels = next(iter(train_loader))       #數(shù)據(jù)可視化
    img = torchvision.utils.make_grid(image, nrow = 10)
    img = img.numpy().transpose(1, 2, 0)
    cv2.imshow('img', img)    #展示圖像
    cv2.waitKey(0)  #按下任一按鍵后開始工作
    print("data ready!")
    #############################################################################################
    #配置設(shè)備、損失函數(shù)和優(yōu)化器
    #############################################################################################
    device = torch.device('cuda')
    model = SiameNetwork().to(device)
    cost = torch.nn.CrossEntropyLoss()        #定義損失函數(shù)，使用交叉熵
    optimizer = torch.optim.Adam(model.parameters(), lr=0.0008, weight_decay=0.001)            #Adam優(yōu)化器
    print("device ready!")
    #############################################################################################
    #訓(xùn)練過程，訓(xùn)練周期由epochs決定
    #############################################################################################
    draw_epoch = []   #記錄訓(xùn)練階段
    draw_loss = []    #記錄訓(xùn)練損失，用于繪制
    draw_train_acc = []   #記錄訓(xùn)練準(zhǔn)確度，用于繪制
    draw_val_loss = []   #記錄測試損失，用于繪制
    draw_val_acc = []  # 記錄測試準(zhǔn)確度，用于繪制
    for epoch in range(epochs):
        #訓(xùn)練過程
        sum_loss = 0.0
        sum_val_loss = 0.0
        train_correct = 0
        test_correct = 0
        for data in train_loader:
            inputs,labels = data
            inputs,labels = Variable(inputs).cuda(),Variable(labels).cuda()
            optimizer.zero_grad()        #將上一batch梯度清零
            outputs = model(inputs)
            loss = cost(outputs, labels)
            loss.backward()             #反向傳播
            optimizer.step()
            _, id = torch.max(outputs.data, 1)
            sum_loss += loss.data
            train_correct += torch.sum(id == labels.data)
        for data in test_loader:              # 模型測試
            inputs,labels = data
            inputs,labels = Variable(inputs).cuda(),Variable(labels).cuda()
            outputs = model(inputs)
            val_loss = cost(outputs, labels)
            _,id = torch.max(outputs.data, 1)
            sum_val_loss += val_loss.data
            test_correct += torch.sum(id == labels.data)
        print('[%d,%d] train loss:%.03f      train acc:%.03f%%'
              %(epoch + 1, epochs, sum_loss / len(train_loader), (100 * train_correct / len(train_dataset))))
        print('        val loss:%.03f        val acc:%.03f%%'
              %(sum_val_loss / len(test_loader), (100 * test_correct / len(test_dataset))))
        draw_epoch.append(epoch+1)       # 用于后續(xù)畫圖的數(shù)據(jù)
        draw_loss.append(sum_loss / len(train_loader))
        draw_train_acc.append(100 * train_correct / len(train_dataset))
        draw_val_loss.append(sum_val_loss / len(test_loader))
        draw_val_acc.append(100 * test_correct / len(test_dataset))
        np.savetxt('%s/train_loss.txt'%(path), draw_loss, fmt="%.3f")        # 保存損失數(shù)據(jù)
        np.savetxt('%s/train_acc.txt'%(path), draw_train_acc, fmt="%.3f")  # 保存準(zhǔn)確率數(shù)據(jù)
        np.savetxt('%s/val_loss.txt'%(path), draw_val_loss, fmt="%.3f")     # 保存損失數(shù)據(jù)
        np.savetxt('%s/val_acc.txt'%(path), draw_val_acc, fmt="%.3f")  # 保存準(zhǔn)確率數(shù)據(jù)
    print("train ready!")
    #############################################################################################
    #數(shù)據(jù)可視化
    #############################################################################################
    draw_result(draw_epoch, path)   # 繪圖函數(shù)
    print("draw ready!")
    #############################################################################################
    #模型的存儲和載入
    #############################################################################################
    torch.save(model.state_dict(), "parameter.pkl") #save
    print("save ready!")
    #############################################################################################

3.spider_iu.py

import re
import requests
from urllib import error
from bs4 import BeautifulSoup
import os
import torch
from torch.autograd import Variable
from torchvision import datasets, transforms
from torch.utils.data import DataLoader
from network import SiameNetwork
from utils import cv_imread
import cv2
from PIL import Image
import shutil
from get_face import find_face
# 設(shè)置參數(shù)
#############################################################################################
GET_PIC = 0    # 1 執(zhí)行這步，0 不執(zhí)行
GET_FACE = 0
GET_IU = 1
#############################################################################################
num = 0
numPicture = 0
file = ''
List = []
# 爬蟲所用函數(shù)
#############################################################################################
def Find(url, A):
    global List
    print('正在檢測圖片總數(shù)，請稍等.....')
    t = 0
    i = 1
    s = 0
    while t < 1000:
        Url = url + str(t)
        try:
            # 這里搞了下
            Result = A.get(Url, timeout=7, allow_redirects=False)
        except BaseException:
            t = t + 60
            continue
        else:
            result = Result.text
            pic_url = re.findall('"objURL":"(.*?)",', result, re.S)  # 先利用正則表達(dá)式找到圖片url
            s += len(pic_url)
            if len(pic_url) == 0:
                break
            else:
                List.append(pic_url)
                t = t + 60
    return s
def recommend(url):
    Re = []
    try:
        html = requests.get(url, allow_redirects=False)
    except error.HTTPError as e:
        return
    else:
        html.encoding = 'utf-8'
        bsObj = BeautifulSoup(html.text, 'html.parser')
        div = bsObj.find('div', id='topRS')
        if div is not None:
            listA = div.findAll('a')
            for i in listA:
                if i is not None:
                    Re.append(i.get_text())
        return Re
def dowmloadPicture(html, keyword):
    global num
    # t =0
    pic_url = re.findall('"objURL":"(.*?)",', html, re.S)  # 先利用正則表達(dá)式找到圖片url
    print('找到關(guān)鍵詞:' + keyword + '的圖片，即將開始下載圖片...')
    for each in pic_url:
        print('正在下載第' + str(num + 1) + '張圖片，圖片地址:' + str(each))
        try:
            if each is not None:
                pic = requests.get(each, timeout=7)
            else:
                continue
        except BaseException:
            print('錯誤，當(dāng)前圖片無法下載')
            continue
        else:
            string = file + r'\\' + keyword + '_' + str(num) + '.jpg'
            fp = open(string, 'wb')
            fp.write(pic.content)
            fp.close()
            num += 1
        if num >= numPicture:
            return
#############################################################################################
if __name__ == '__main__':  # 主函數(shù)入口
    # 爬蟲部分，存放到 name + ‘文件'
    #############################################################################################
    if GET_PIC == 1:
        headers = {
            'Accept-Language': 'zh-CN,zh;q=0.8,zh-TW;q=0.7,zh-HK;q=0.5,en-US;q=0.3,en;q=0.2',
            'Connection': 'keep-alive',
            'User-Agent': 'Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Firefox/60.0',
            'Upgrade-Insecure-Requests': '1'
        }
        A = requests.Session()
        A.headers = headers
        tm = int(input('請輸入每類圖片的下載數(shù)量 '))
        numPicture = tm
        line_list = []
        with open('./name.txt', encoding='utf-8') as file:
            line_list = [k.strip() for k in file.readlines()]  # 用 strip()移除末尾的空格
        for word in line_list:
            url = 'https://image.baidu.com/search/flip?tn=baiduimage&ie=utf-8&word=' + word + '&pn='
            tot = Find(url, A)
            Recommend = recommend(url)  # 記錄相關(guān)推薦
            print('經(jīng)過檢測%s類圖片共有%d張' % (word, tot))
            file = word + '文件'
            y = os.path.exists(file)
            if y == 1:
                print('該文件已存在，無需創(chuàng)建')
            else:
                os.mkdir(file)
            t = 0
            tmp = url
            while t < numPicture:
                try:
                    url = tmp + str(t)
                    # result = requests.get(url, timeout=10)
                    # 這里搞了下
                    result = A.get(url, timeout=10, allow_redirects=False)
                    print(url)
                except error.HTTPError as e:
                    print('網(wǎng)絡(luò)錯誤，請調(diào)整網(wǎng)絡(luò)后重試')
                    t = t + 60
                else:
                    dowmloadPicture(result.text, word)
                    t = t + 60
            numPicture = numPicture + tm
        print('當(dāng)前搜索結(jié)束，開始提取人臉')
    #############################################################################################
    # 將訓(xùn)練集和測試集中的raw圖片處理，提取出人臉圖片,從file+'文件'到‘待分辨人臉'
    ############################################################################################
    if GET_FACE == 1:
        if GET_PIC == 0:
            file = '韓國女藝人文件'
        raw_root = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/'+ file + '/'
        img_raw = os.listdir(raw_root)
        new_path = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/待分辨人臉/'
        n = 0
        for i in range(len(img_raw)):
            try:
                img = Image.open(raw_root + img_raw[i])
            except:
                print('a file error, continue')
                continue
            else:
                img_train = find_face(raw_root + img_raw[i])
                if img_train == None:
                    continue
                else:
                    img_train.save(new_path + '%d.JPG' % n)
                    print(raw_root + img_raw[i])
                    n += 1
        print('在%d張圖片中，共找到%d張臉' % (len(img_raw), n))
        print('提取人臉結(jié)束，開始尋找IU')
    #############################################################################################
    # 開始判別，從'待分辨人臉‘中找出IU存放到'IU_pic‘
    #############################################################################################
    if GET_IU == 1:
        data_transform = transforms.Compose([
            # transforms.Grayscale(num_output_channels=1),  # 彩色圖像轉(zhuǎn)灰度圖像num_output_channels默認(rèn)1
            transforms.Resize(112),
            transforms.CenterCrop((112, 92)),  # 中心裁剪為112*92
            transforms.ToTensor(),
            transforms.Normalize(mean=[0.5, 0.5, 0.5],std=[0.5, 0.5, 0.5])
            # transforms.Normalize(mean=0.5, std=0.5)
        ])
        device = torch.device('cuda')
        model = SiameNetwork().to(device)
        model.load_state_dict(torch.load('parameter.pkl'))  # load
        model.eval()
        judge_root = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/待分辨人臉/'
        img_judge = os.listdir(judge_root)
        new_path = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/IU_pic/'
        result = []
        n = 0
        for i in range(len(img_judge)):
            try:
                img = Image.open(judge_root + img_judge[i])
            except:
                print('a file error, continue')
                continue
            else:
                img = img.convert('RGB')
                print(judge_root + img_judge[i])
                input = data_transform(img)
                input = input.unsqueeze(0)  # 這里經(jīng)過轉(zhuǎn)換后輸出的input格式是[C,H,W],網(wǎng)絡(luò)輸入還需要增加一維批量大小B
                # 增加一維，輸出的img格式為[1,C,H,W]
                input = Variable(input.cuda())
                output = model(input)  # 將圖片輸入網(wǎng)絡(luò)得到輸出
                _, id = torch.max(output.data, 1)   # 0是IU,1是其他
                if id.item() == 0:
                    shutil.copy(judge_root + img_judge[i], new_path)
                    n += 1
        print('/n在%d張圖片中，共找到%d張IU的圖片'%(len(img_judge), n))
    #############################################################################################

4.file_deal.py

import os
raw_train_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/IU/'
raw_train_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/train/Other/'
raw_test_root_1 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/IU/'
raw_test_root_2 = 'E:/Table/學(xué)習(xí)數(shù)據(jù)集/find_iu/data/raw/test/Other/'
raw_roots = [raw_train_root_1, raw_train_root_2, raw_test_root_1, raw_test_root_2]
for path in raw_roots:
    # 獲取該目錄下所有文件，存入列表中
    fileList = os.listdir(path)
    n = 0
    for i in fileList:
        # 設(shè)置舊文件名（就是路徑+文件名）
        oldname = path + os.sep + fileList[n]  # os.sep添加系統(tǒng)分隔符
        # 設(shè)置新文件名
        newname = path + os.sep + str(n) + '.JPG'
        os.rename(oldname, newname)  # 用os模塊中的rename方法對文件改名
        print(oldname, '======>', newname)
        n += 1

5.network.py

import torch
import torch.nn as nn
class SiameNetwork(nn.Module):
    def __init__(self):
        super(SiameNetwork, self).__init__()
        # input: h=112, w=92
        self.conv1 = torch.nn.Sequential(
            torch.nn.Conv2d(in_channels=3,  # 輸入單通道
                            out_channels=16,  # 16個3*3卷積核
                            kernel_size=3,  # 卷積核尺寸
                            stride=2,  # 卷積核滑動步長, 1的話圖片大小不變，2的話會大小會變?yōu)?h/2)*(w/2)
                            padding=1),  # 邊緣填充大小，如果要保持原大小，kernel_size//2
            torch.nn.BatchNorm2d(16),  # 標(biāo)準(zhǔn)化，前面卷積后有16個圖層
            torch.nn.ReLU()  # 激活函數(shù)
        )  # output: h=56, w=46
        self.conv2 = torch.nn.Sequential(
            torch.nn.Conv2d(16, 32, 3, 2, 1),
            torch.nn.BatchNorm2d(32),
            torch.nn.ReLU()
        )  # output: h=28, w=23
        self.conv3 = torch.nn.Sequential(
            torch.nn.Conv2d(32, 64, 3, 2, 1),
            torch.nn.BatchNorm2d(64),
            torch.nn.ReLU()
        )  # output: h=14, w=12
        self.conv4 = torch.nn.Sequential(
            torch.nn.Conv2d(64, 64, 2, 2, 0),
            torch.nn.BatchNorm2d(64),
            torch.nn.ReLU()
        )  # output: h=7, w=6
        self.mlp1 = torch.nn.Linear(7 * 6 * 64, 100)  # 需要計算conv4的輸出尺寸，每次卷積的輸出尺寸(size - kernal + 2*padding)/stride + 1
        self.mlp2 = torch.nn.Linear(100, 10)
    def forward(self, x):
        x = self.conv1(x)
        x = self.conv2(x)
        x = self.conv3(x)
        x = self.conv4(x)
        x = self.mlp1(x.view(x.size(0), -1))  # view展平
        x = self.mlp2(x)
        return x

6.utils.py

import matplotlib as mpl
import matplotlib.pyplot as plt
import numpy as np
import cv2
# 繪制訓(xùn)練、測試的損失、準(zhǔn)確度
#############################################################################################
def draw_result(draw_epoch, path):
    show_loss = np.loadtxt('%s/train_loss.txt' % (path))   # 讀取txt文件，不同優(yōu)化器的損失
    show_train_acc = np.loadtxt('%s/train_acc.txt' % (path))  # 讀取不同模型的準(zhǔn)確度
    show_val_loss = np.loadtxt('%s/val_loss.txt' % (path))  # 讀取txt文件，不同優(yōu)化器的損失
    show_val_acc = np.loadtxt('%s/val_acc.txt' % (path))  # 讀取不同模型的準(zhǔn)確度
    mpl.rc('font',family='Times New Roman', weight='semibold', size=9)  # 設(shè)置matplotlib中所有繪圖風(fēng)格的設(shè)置
    font1 = {'weight' : 'semibold', 'size' : 11}  #設(shè)置文字風(fēng)格
    fig = plt.figure(figsize = (7,5))    #figsize是圖片的大小`
    ax1 = fig.add_subplot(2, 2, 1)       # ax1是子圖的名字
    ax1.plot(draw_epoch, show_loss,color = 'red', label = u'AdaPID', linewidth =1.0)
    ax1.legend()   #顯示圖例
    ax1.set_title('Training Loss', font1)
    ax1.set_xlabel(u'Epoch', font1)
    ax2 = fig.add_subplot(2, 2, 2)
    ax2.plot(draw_epoch, show_val_loss,color = 'red', label = u'Adam', linewidth =1.0)
    ax2.legend()   #顯示圖例
    ax2.set_title('Validation Loss', font1)
    ax2.set_xlabel(u'Epoch', font1)
    ax3 = fig.add_subplot(2, 2, 3)
    ax3.plot(draw_epoch, show_train_acc,color = 'red', label = u'Adam', linewidth =1.0)
    ax3.legend()   #顯示圖例
    ax3.set_title('Training Accuracy', font1)
    ax3.set_xlabel(u'Epoch', font1)
    ax4 = fig.add_subplot(2, 2, 4)
    ax4.plot(draw_epoch, show_val_acc,color = 'red', label = u'Adam', linewidth =1.0)
    ax4.legend()   #顯示圖例
    ax4.set_title('Validation Accuracy', font1)
    ax4.set_xlabel(u'Epoch', font1)
    plt.subplots_adjust(left=None, bottom=None, right=None, top=None, wspace=None, hspace=0.45) # hspace為子圖上下間距
    plt.savefig('%s/show_curve.jpg' % (path), dpi=300)
#############################################################################################
# 用于解決cv.imread不能讀取中文路徑的問題
#############################################################################################
def cv_imread(filePath):
    # 核心就是下面這句，一般直接用這句就行，直接把圖片轉(zhuǎn)為mat數(shù)據(jù)
    cv_img = cv2.imdecode(np.fromfile(filePath, dtype=np.uint8), -1)
    # imdecode讀取的是rgb，如果后續(xù)需要opencv處理的話，需要轉(zhuǎn)換成bgr，轉(zhuǎn)換后圖片顏色會變化
    # cv_img=cv2.cvtColor(cv_img,cv2.COLOR_RGB2BGR)
    return cv_img
#############################################################################################

總結(jié)

總體而言，這是一個新人的興趣之作，但是限于GPU性能無法使用太復(fù)雜的網(wǎng)絡(luò)，最后識別的效果不佳，若讀者有興趣，也可以去替換一下網(wǎng)絡(luò)，改善一下數(shù)據(jù)集，嘗試提升識別性能。更多相關(guān)人臉識別內(nèi)容請搜索腳本之家以前的文章或繼續(xù)瀏覽下面的相關(guān)文章,希望大家以后多多支持腳本之家！

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