www.gusucode.com > Adaboost算法训练人脸图像和非人脸图像,通过迭代得到由多个弱分类器组合而成的强分类器,实现图片里的人脸检测。 > Adaboost算法训练人脸图像和非人脸图像,通过迭代得到由多个弱分类器组合而成的强分类器,实现图片里的人脸检测。/myfacedet02/threshold_te.m
function [L,hits,error_rate] = threshold_te(model,test_set,sample_weights,true_labels) % % TESTING THRESHOLD CLASSIFIER % % Testing of the basic linear classifier where seperation hyperplane is % perpedicular to one dimension. % % [L,hits,error_rate] = threshold_te(model,test_set,sample_weights,true_labels) % % model: the model that is outputed from threshold_tr. It consists of % 1) min_error: training error % 2) min_error_thr: threshold value % 3) pos_neg: whether up-direction shows the positive region (label:2, 'pos') or % the negative region (label:1, 'neg') % test_set: an NxD-matrix, each row is a testing sample in the D dimensional feature % space. % sample_weights: an Nx1-vector, each entry is the weight of the corresponding test sample % true_labels: Nx1 dimensional vector, each entry is the corresponding label (either 1 or 2) % % L: an Nx2-matrix showing likelihoods of each class % hits: the number of hits % error_rate: the error rate with the sample weights % % % Bug Reporting: Please contact the author for bug reporting and comments. % % Cuneyt Mertayak % email: cuneyt.mertayak@gmail.com % version: 1.0 % date: 21/05/2007 feat = test_set(:,model.dim); if(strcmp(model.pos_neg,'pos')) ind = (feat>model.min_error_thr)+1; else ind = (feat<model.min_error_thr)+1; end hits = sum(ind==true_labels); error_rate = sum(sample_weights(ind~=true_labels)); L = zeros(length(feat),2); L(ind==1,1) = 1; L(ind==2,2) = 1;