京东金融需要人脸识别吗

除了softmax层构建的深度网络，Matlab还有一个简单的构建数据分类的函数，那就是patternnet，其用法类似。可以直接对图像特征数据处理，也可以对图像集处理。代码如下：

%exam1.m 用训练图像特征构建深度网络并计算测试图像得分clear;load('JDPig_mlhmslbp_spyr.mat');m = numel(classe_name);n = length(y);label = []for i=1:n label(:,i) = zeros(m,1); label(y(i),i) = 1;endtestImg = load('JDTest_mlhmslbp_spyr.mat');if ~exist('patternnet.mat') net = patternnet(1000); net = train(net,X,label); fprintf('saving netn'); save('patternnet.mat','net');else load('patternnet.mat','net'); fprintf('loading netn');endif ~exist('resPatternnet.mat') view(net); scores = net(testImg.X); save('resPatternnet.mat','scores');else load('resPatternnet.mat','scores');endfprintf('Testing images!n');load('testName.mat','imgName');for i=1:length(scores) for j=1:m indImg((i-1)*m+j) = imgName(i); plabel((i-1)*m+j) = j; prob((i-1)*m+j) = scores(j,i); endendT = table(indImg',plabel',prob');writetable(T,'resPatternnet.csv');fprintf('Image recognition finished!n'); clear;% 不用特征文件，对图像文件夹进行处理trainFolder = fullfile(pwd, 'image');testFolder = fullfile(pwd, 'query');testSet = imageSet(testFolder); %query imagetrainImds = imageDatastore(trainFolder,'IncludeSubfolders',true,'FileExtensions','.jpg','LabelSource','foldernames');testImds = imageDatastore(testFolder,'IncludeSubfolders',false);setNum = numel(qImageSets);y = trainImds.Labels;n = length(y);label = []for i=1:n label(:,i) = zeros(m,1); label(y(i),i) = 1;endfor i=1:if ~exist('patternnet1024.mat') net = patternnet(1024); net = train(net,X,label); fprintf('saving netn'); save('patternnet1024.mat','net');else load('patternnet1024.mat','net'); fprintf('loading netn');endif ~exist('resPatternnet1024.mat') view(net); scores = net(testImg.X); save('resPatternnet1024.mat','scores');else load('resPatternnet1024.mat','scores');endfprintf('Testing images!n');load('testName.mat','imgName');for i=1:length(scores) for j=1:m indImg((i-1)*m+j) = imgName(i); plabel((i-1)*m+j) = j; prob((i-1)*m+j) = scores(j,i); endendT = table(indImg',plabel',prob');writetable(T,'resPatternnet2000.csv');fprintf('Image recognition finished!n');

代码功能与上节京东金融大数据竞赛猪脸识别（6）- 识别方法之三类似，可参看其注释。

转载于:https://blog.51cto.com/8764888/2086338