clear
close all

load('My_UFPR.mat')
trainimage=trainimages;
trainlabel=trainlabels;
load('LPALIC_Latin.mat')
trainlabel(trainlabel=="I")=categorical(1); % in Brazil the class I and 1 has the same font
trainlabel=removecats(trainlabel);
trainimages=cat(4,trainimage,trainimages);
trainlabels=[trainlabel;trainlabels,];



%% Define the Network Layers

layers = [
    imageInputLayer([28 28 1],'Normalization','none','Name','input')
    convolution2dLayer(5,64,'Name','conv1')
    batchNormalizationLayer('Name','BN1')
    reluLayer('Name','relu1')
% 24x24
    convolution2dLayer(5,128,'Name','conv2')
    batchNormalizationLayer('Name','BN2')
    reluLayer('Name','relu2')
% 20x20
    maxPooling2dLayer(2,'Stride',2,'Name','max1')
% 10x10 
    convolution2dLayer(5,176,'Name','conv3')
    batchNormalizationLayer('Name','BN3')
    reluLayer('Name','relu3')
% 6x6 
    convolution2dLayer(5,208,'Name','conv4')
    batchNormalizationLayer('Name','BN4')
    reluLayer('Name','relu4')
% 2x2   
    maxPooling2dLayer(2,'Stride',2,'Name','max2')
  
    fullyConnectedLayer(34,'Name','fc')
    softmaxLayer('Name','softmax')
    classificationLayer('Name','classOutput')];

%% Specify the Training Options

options = trainingOptions('sgdm','LearnRateSchedule','piecewise',...
      'MiniBatchSize',120,'LearnRateDropFactor',0.7,... 
      'LearnRateDropPeriod',2,... 
      'MaxEpochs',20, ...
	'InitialLearnRate',0.01,...
    'Shuffle','every-epoch');  

   convnet = trainNetwork(trainimages,trainlabels,layers,options);

   % load('UFPR_result_LPALIC_train_test_20397.mat')
   
YTest = classify(convnet,testimages);
accuracy = sum(YTest == testlabels)/numel(testlabels);
Error=(1-accuracy)*100