【人臉識別】基於matlab ksvd字典學習人臉表情識別【含Matlab原始碼 460期】
阿新 • • 發佈:2021-06-28
一、簡介
二、原始碼
% % % Main Program of KSVD-NN based facial expression recognition. % % Ziyang Zhang clear datadim='37x30'; %datadim='50x40'; %datadim='gabor_all'; testmethod='unfamiliar'; % prepare image data [data,label] = PrepareData(datadim,testmethod,9); % direct nearest neighbor classification testresult = nearestNeighbor( data.train , label.train , data.test ); rate = length( find( ( testresult - label.test ) == 0 ) ) / length(label.test); clear testresult; fprintf('\n Direct nearest neighbot on pixel values: rec rate: %f \n',rate); % training process using KSVD param.L = 12; param.K = 90; param.numIteration = 20; param.errorFlag = 0; param.preserveDCAtom = 0; param.InitializationMethod = 'DataElements'; param.displayProgress = 1; disp('Starting to train the dictionary'); tt=cputime; [Dictionary,KSVDout] = KSVD(data.train,param); fprintf('\ntime of K-SVD: %f\n\n' , cputime - tt); %I=showdict(Dictionary,[37,30],10,8,'lines') ; %imshow(I); %KSVDout.CoefMatrix = full( KSVDout.CoefMatrix ); tt=cputime; % Using OMP to find the sparse coefficients for test samples coeftest = OMP(Dictionary,data.test,param.L); %coeftest = full( coeftest ); % nearest neighbor classification testresult = nearestNeighbor( KSVDout.CoefMatrix , label.train , coeftest ); fprintf('\ntime of testing: %f\n\n' , cputime - tt); rate = length( find( ( testresult - label.test ) == 0 ) ) / length(label.test); fprintf('\n The result when image dimension: %s test-method: %s \n' , datadim, testmethod ); fprintf(' L(sparsity of coef) = %d, K(number of atoms) = %d : recognition rate: %f \n\n\n',param.L , param.K , rate); % direct pixal values testresult = nearestNeighbor( data.train , label.train , data.test ); rate = length( find( ( testresult - label.test ) == 0 ) ) / length(label.test);
三、備註
版本:2014a
完整程式碼或代寫加1564658423