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本文实例为大家分享了基于神经卷积网络的人脸识别,供大家参考,具体内容如下
1.人脸识别整体设计方案
客_服交互流程图:
2.服务端代码展示
sk = socket.socket() # s.bind(address) 将套接字绑定到地址。在AF_INET下,以元组(host,port)的形式表示地址。 sk.bind(("172.29.25.11",8007)) # 开始监听传入连接。 sk.listen(True) while True: for i in range(100): # 接受连接并返回(conn,address),conn是新的套接字对象,可以用来接收和发送数据。address是连接客户端的地址。 conn,address = sk.accept() # 建立图片存储路径 path = str(i+1) + '.jpg' # 接收图片大小(字节数) size = conn.recv(1024) size_str = str(size,encoding="utf-8") size_str = size_str[2 :] file_size = int(size_str) # 响应接收完成 conn.sendall(bytes('finish', encoding="utf-8")) # 已经接收数据大小 has_size has_size = 0 # 创建图片并写入数据 f = open(path,"wb") while True: # 获取 if file_size == has_size: break date = conn.recv(1024) f.write(date) has_size += len(date) f.close() # 图片缩放 resize(path) # cut_img(path):图片裁剪成功返回True;失败返回False if cut_img(path): yuchuli() result = test('test.jpg') conn.sendall(bytes(result,encoding="utf-8")) else: print('falue') conn.sendall(bytes('人眼检测失败,请保持图片眼睛清晰',encoding="utf-8")) conn.close()
3.图片预处理
1)图片缩放
# 根据图片大小等比例缩放图片 def resize(path): image=cv2.imread(path,0) row,col = image.shape if row >= 2500: x,y = int(row/5),int(col/5) elif row >= 2000: x,y = int(row/4),int(col/4) elif row >= 1500: x,y = int(row/3),int(col/3) elif row >= 1000: x,y = int(row/2),int(col/2) else: x,y = row,col # 缩放函数 res=cv2.resize(image,(y,x),interpolation=cv2.INTER_CUBIC) cv2.imwrite(path,res)
2)直方图均衡化和中值滤波
# 直方图均衡化 eq = cv2.equalizeHist(img) # 中值滤波 lbimg=cv2.medianBlur(eq,3)
3)人眼检测
# -*- coding: utf-8 -*- # 检测人眼,返回眼睛数据 import numpy as np import cv2 def eye_test(path): # 待检测的人脸路径 imagepath = path # 获取训练好的人脸参数 eyeglasses_cascade = cv2.CascadeClassifier('haarcascade_eye_tree_eyeglasses.xml') # 读取图片 img = cv2.imread(imagepath) # 转为灰度图像 gray = cv2.cvtColor(img,cv2.COLOR_BGR2GRAY) # 检测并获取人眼数据 eyeglasses = eyeglasses_cascade.detectMultiScale(gray) # 人眼数为2时返回左右眼位置数据 if len(eyeglasses) == 2: num = 0 for (e_gx,e_gy,e_gw,e_gh) in eyeglasses: cv2.rectangle(img,(e_gx,e_gy),(e_gx+int(e_gw/2),e_gy+int(e_gh/2)),(0,0,255),2) if num == 0: x1,y1 = e_gx+int(e_gw/2),e_gy+int(e_gh/2) else: x2,y2 = e_gx+int(e_gw/2),e_gy+int(e_gh/2) num += 1 print('eye_test') return x1,y1,x2,y2 else: return False
4)人眼对齐并裁剪
# -*- coding: utf-8 -*- # 人眼对齐并裁剪 # 参数含义: # CropFace(image, eye_left, eye_right, offset_pct, dest_sz) # eye_left is the position of the left eye # eye_right is the position of the right eye # 比例的含义为:要保留的图像靠近眼镜的百分比, # offset_pct is the percent of the image you want to keep next to the eyes (horizontal, vertical direction) # 最后保留的图像的大小。 # dest_sz is the size of the output image # import sys,math from PIL import Image from eye_test import eye_test # 计算两个坐标的距离 def Distance(p1,p2): dx = p2[0]- p1[0] dy = p2[1]- p1[1] return math.sqrt(dx*dx+dy*dy) # 根据参数,求仿射变换矩阵和变换后的图像。 def ScaleRotateTranslate(image, angle, center =None, new_center =None, scale =None, resample=Image.BICUBIC): if (scale is None)and (center is None): return image.rotate(angle=angle, resample=resample) nx,ny = x,y = center sx=sy=1.0 if new_center: (nx,ny) = new_center if scale: (sx,sy) = (scale, scale) cosine = math.cos(angle) sine = math.sin(angle) a = cosine/sx b = sine/sx c = x-nx*a-ny*b d =-sine/sy e = cosine/sy f = y-nx*d-ny*e return image.transform(image.size, Image.AFFINE, (a,b,c,d,e,f), resample=resample) # 根据所给的人脸图像,眼睛坐标位置,偏移比例,输出的大小,来进行裁剪。 def CropFace(image, eye_left=(0,0), eye_right=(0,0), offset_pct=(0.2,0.2), dest_sz = (70,70)): # calculate offsets in original image 计算在原始图像上的偏移。 offset_h = math.floor(float(offset_pct[0])*dest_sz[0]) offset_v = math.floor(float(offset_pct[1])*dest_sz[1]) # get the direction 计算眼睛的方向。 eye_direction = (eye_right[0]- eye_left[0], eye_right[1]- eye_left[1]) # calc rotation angle in radians 计算旋转的方向弧度。 rotation =-math.atan2(float(eye_direction[1]),float(eye_direction[0])) # distance between them # 计算两眼之间的距离。 dist = Distance(eye_left, eye_right) # calculate the reference eye-width 计算最后输出的图像两只眼睛之间的距离。 reference = dest_sz[0]-2.0*offset_h # scale factor # 计算尺度因子。 scale =float(dist)/float(reference) # rotate original around the left eye # 原图像绕着左眼的坐标旋转。 image = ScaleRotateTranslate(image, center=eye_left, angle=rotation) # crop the rotated image # 剪切 crop_xy = (eye_left[0]- scale*offset_h, eye_left[1]- scale*offset_v) # 起点 crop_size = (dest_sz[0]*scale, dest_sz[1]*scale) # 大小 image = image.crop((int(crop_xy[0]),int(crop_xy[1]),int(crop_xy[0]+crop_size[0]),int(crop_xy[1]+crop_size[1]))) # resize it 重置大小 image = image.resize(dest_sz, Image.ANTIALIAS) return image def cut_img(path): image = Image.open(path) # 人眼识别成功返回True;否则,返回False if eye_test(path): print('cut_img') # 获取人眼数据 leftx,lefty,rightx,righty = eye_test(path) # 确定左眼和右眼位置 if leftx > rightx: temp_x,temp_y = leftx,lefty leftx,lefty = rightx,righty rightx,righty = temp_x,temp_y # 进行人眼对齐并保存截图 CropFace(image, eye_left=(leftx,lefty), eye_right=(rightx,righty), offset_pct=(0.30,0.30), dest_sz=(92,112)).save('test.jpg') return True else: print('falue') return False
4.用神经卷积网络训练数据
# -*- coding: utf-8 -*- from numpy import * import cv2 import tensorflow as tf # 图片大小 TYPE = 112*92 # 训练人数 PEOPLENUM = 42 # 每人训练图片数 TRAINNUM = 15 #( train_face_num ) # 单人训练人数加测试人数 EACH = 21 #( test_face_num + train_face_num ) # 2维=>1维 def img2vector1(filename): img = cv2.imread(filename,0) row,col = img.shape vector1 = zeros((1,row*col)) vector1 = reshape(img,(1,row*col)) return vector1 # 获取人脸数据 def ReadData(k): path = 'face_flip/' train_face = zeros((PEOPLENUM*k,TYPE),float32) train_face_num = zeros((PEOPLENUM*k,PEOPLENUM)) test_face = zeros((PEOPLENUM*(EACH-k),TYPE),float32) test_face_num = zeros((PEOPLENUM*(EACH-k),PEOPLENUM)) # 建立42个人的训练人脸集和测试人脸集 for i in range(PEOPLENUM): # 单前获取人 people_num = i + 1 for j in range(k): #获取图片路径 filename = path + 's' + str(people_num) + '/' + str(j+1) + '.jpg' #2维=>1维 img = img2vector1(filename) #train_face:每一行为一幅图的数据;train_face_num:储存每幅图片属于哪个人 train_face[i*k+j,:] = img/255 train_face_num[i*k+j,people_num-1] = 1 for j in range(k,EACH): #获取图片路径 filename = path + 's' + str(people_num) + '/' + str(j+1) + '.jpg' #2维=>1维 img = img2vector1(filename) # test_face:每一行为一幅图的数据;test_face_num:储存每幅图片属于哪个人 test_face[i*(EACH-k)+(j-k),:] = img/255 test_face_num[i*(EACH-k)+(j-k),people_num-1] = 1 return train_face,train_face_num,test_face,test_face_num # 获取训练和测试人脸集与对应lable train_face,train_face_num,test_face,test_face_num = ReadData(TRAINNUM) # 计算测试集成功率 def compute_accuracy(v_xs, v_ys): global prediction y_pre = sess.run(prediction, feed_dict={xs: v_xs, keep_prob: 1}) correct_prediction = tf.equal(tf.argmax(y_pre,1), tf.argmax(v_ys,1)) accuracy = tf.reduce_mean(tf.cast(correct_prediction, tf.float32)) result = sess.run(accuracy, feed_dict={xs: v_xs, ys: v_ys, keep_prob: 1}) return result # 神经元权重 def weight_variable(shape): initial = tf.truncated_normal(shape, stddev=0.1) return tf.Variable(initial) # 神经元偏置 def bias_variable(shape): initial = tf.constant(0.1, shape=shape) return tf.Variable(initial) # 卷积 def conv2d(x, W): # stride [1, x_movement, y_movement, 1] # Must have strides[0] = strides[3] = 1 return tf.nn.conv2d(x, W, strides=[1, 1, 1, 1], padding='SAME') # 最大池化,x,y步进值均为2 def max_pool_2x2(x): # stride [1, x_movement, y_movement, 1] return tf.nn.max_pool(x, ksize=[1,2,2,1], strides=[1,2,2,1], padding='SAME') # define placeholder for inputs to network xs = tf.placeholder(tf.float32, [None, 10304])/255. # 112*92 ys = tf.placeholder(tf.float32, [None, PEOPLENUM]) # 42个输出 keep_prob = tf.placeholder(tf.float32) x_image = tf.reshape(xs, [-1, 112, 92, 1]) # print(x_image.shape) # [n_samples, 112,92,1] # 第一层卷积层 W_conv1 = weight_variable([5,5, 1,32]) # patch 5x5, in size 1, out size 32 b_conv1 = bias_variable([32]) h_conv1 = tf.nn.relu(conv2d(x_image, W_conv1) + b_conv1) # output size 112x92x32 h_pool1 = max_pool_2x2(h_conv1) # output size 56x46x64 # 第二层卷积层 W_conv2 = weight_variable([5,5, 32, 64]) # patch 5x5, in size 32, out size 64 b_conv2 = bias_variable([64]) h_conv2 = tf.nn.relu(conv2d(h_pool1, W_conv2) + b_conv2) # output size 56x46x64 h_pool2 = max_pool_2x2(h_conv2) # output size 28x23x64 # 第一层神经网络全连接层 W_fc1 = weight_variable([28*23*64, 1024]) b_fc1 = bias_variable([1024]) # [n_samples, 28, 23, 64] - [n_samples, 28*23*64] h_pool2_flat = tf.reshape(h_pool2, [-1, 28*23*64]) h_fc1 = tf.nn.relu(tf.matmul(h_pool2_flat, W_fc1) + b_fc1) h_fc1_drop = tf.nn.dropout(h_fc1, keep_prob) # 第二层神经网络全连接层 W_fc2 = weight_variable([1024, PEOPLENUM]) b_fc2 = bias_variable([PEOPLENUM]) prediction = tf.nn.softmax((tf.matmul(h_fc1_drop, W_fc2) + b_fc2)) # 交叉熵损失函数 cost = tf.reduce_mean(tf.nn.softmax_cross_entropy_with_logits(logits = tf.matmul(h_fc1_drop, W_fc2)+b_fc2, labels=ys)) regularizers = tf.nn.l2_loss(W_fc1) + tf.nn.l2_loss(b_fc1) +tf.nn.l2_loss(W_fc2) + tf.nn.l2_loss(b_fc2) # 将正则项加入损失函数 cost += 5e-4 * regularizers # 优化器优化误差值 train_step = tf.train.AdamOptimizer(1e-4).minimize(cost) sess = tf.Session() init = tf.global_variables_initializer() saver = tf.train.Saver() sess.run(init) # 训练1000次,每50次输出测试集测试结果 for i in range(1000): sess.run(train_step, feed_dict={xs: train_face, ys: train_face_num, keep_prob: 0.5}) if i % 50 == 0: print(sess.run(prediction[0],feed_dict= {xs: test_face,ys: test_face_num,keep_prob: 1})) print(compute_accuracy(test_face,test_face_num)) # 保存训练数据 save_path = saver.save(sess,'my_data/save_net.ckpt')
5.用神经卷积网络测试数据
# -*- coding: utf-8 -*- # 两层神经卷积网络加两层全连接神经网络 from numpy import * import cv2 import tensorflow as tf # 神经网络最终输出个数 PEOPLENUM = 42 # 2维=>1维 def img2vector1(img): row,col = img.shape vector1 = zeros((1,row*col),float32) vector1 = reshape(img,(1,row*col)) return vector1 # 神经元权重 def weight_variable(shape): initial = tf.truncated_normal(shape, stddev=0.1) return tf.Variable(initial) # 神经元偏置 def bias_variable(shape): initial = tf.constant(0.1, shape=shape) return tf.Variable(initial) # 卷积 def conv2d(x, W): # stride [1, x_movement, y_movement, 1] # Must have strides[0] = strides[3] = 1 return tf.nn.conv2d(x, W, strides=[1, 1, 1, 1], padding='SAME') # 最大池化,x,y步进值均为2 def max_pool_2x2(x): # stride [1, x_movement, y_movement, 1] return tf.nn.max_pool(x, ksize=[1,2,2,1], strides=[1,2,2,1], padding='SAME') # define placeholder for inputs to network xs = tf.placeholder(tf.float32, [None, 10304])/255. # 112*92 ys = tf.placeholder(tf.float32, [None, PEOPLENUM]) # 42个输出 keep_prob = tf.placeholder(tf.float32) x_image = tf.reshape(xs, [-1, 112, 92, 1]) # print(x_image.shape) # [n_samples, 112,92,1] # 第一层卷积层 W_conv1 = weight_variable([5,5, 1,32]) # patch 5x5, in size 1, out size 32 b_conv1 = bias_variable([32]) h_conv1 = tf.nn.relu(conv2d(x_image, W_conv1) + b_conv1) # output size 112x92x32 h_pool1 = max_pool_2x2(h_conv1) # output size 56x46x64 # 第二层卷积层 W_conv2 = weight_variable([5,5, 32, 64]) # patch 5x5, in size 32, out size 64 b_conv2 = bias_variable([64]) h_conv2 = tf.nn.relu(conv2d(h_pool1, W_conv2) + b_conv2) # output size 56x46x64 h_pool2 = max_pool_2x2(h_conv2) # output size 28x23x64 # 第一层神经网络全连接层 W_fc1 = weight_variable([28*23*64, 1024]) b_fc1 = bias_variable([1024]) # [n_samples, 28, 23, 64] - [n_samples, 28*23*64] h_pool2_flat = tf.reshape(h_pool2, [-1, 28*23*64]) h_fc1 = tf.nn.relu(tf.matmul(h_pool2_flat, W_fc1) + b_fc1) h_fc1_drop = tf.nn.dropout(h_fc1, keep_prob) # 第二层神经网络全连接层 W_fc2 = weight_variable([1024, PEOPLENUM]) b_fc2 = bias_variable([PEOPLENUM]) prediction = tf.nn.softmax((tf.matmul(h_fc1_drop, W_fc2) + b_fc2)) sess = tf.Session() init = tf.global_variables_initializer() # 下载训练数据 saver = tf.train.Saver() saver.restore(sess,'my_data/save_net.ckpt') # 返回签到人名 def find_people(people_num): if people_num == 41: return '任童霖' elif people_num == 42: return 'LZT' else: return 'another people' def test(path): # 获取处理后人脸 img = cv2.imread(path,0)/255 test_face = img2vector1(img) print('true_test') # 计算输出比重最大的人及其所占比重 prediction1 = sess.run(prediction,feed_dict={xs:test_face,keep_prob:1}) prediction1 = prediction1[0].tolist() people_num = prediction1.index(max(prediction1))+1 result = max(prediction1)/sum(prediction1) print(result,find_people(people_num)) # 神经网络输出最大比重大于0.5则匹配成功 if result > 0.50: # 保存签到数据 qiandaobiao = load('save.npy') qiandaobiao[people_num-1] = 1 save('save.npy',qiandaobiao) # 返回 人名+签到成功 print(find_people(people_num) + '已签到') result = find_people(people_num) + ' 签到成功' else: result = '签到失败' return result
神经卷积网络入门简介
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。
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稳了!魔兽国服回归的3条重磅消息!官宣时间再确认!
昨天有一位朋友在大神群里分享,自己亚服账号被封号之后居然弹出了国服的封号信息对话框。
这里面让他访问的是一个国服的战网网址,com.cn和后面的zh都非常明白地表明这就是国服战网。
而他在复制这个网址并且进行登录之后,确实是网易的网址,也就是我们熟悉的停服之后国服发布的暴雪游戏产品运营到期开放退款的说明。这是一件比较奇怪的事情,因为以前都没有出现这样的情况,现在突然提示跳转到国服战网的网址,是不是说明了简体中文客户端已经开始进行更新了呢?