Parameters Setting:
General Parameters: nOrient = 16; sizeTemplatex=60;
sizeTemplatey=80;
GaborScaleList=[0.7, 0.4, 0.2]; useDoG = true; isLocalNormalize = false; DoGScale = 10;
HMC Parameters: lambdaLearningRate = 0.01;
epsilon = 0.01;
L = 10; nIteraton =6; 12x12 chains
Clustering Parameters: #EM iteration = 10; #clusters = 4; isSoftClassification = false.