opencv/apps/sft/sft.cpp

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// Trating application for Soft Cascades.

#include <sft/common.hpp>
#include <sft/octave.hpp>

int main(int argc, char** argv)
{
// hard coded now
    int nfeatures  = 50;
    int npositives = 10;
    int nnegatives = 10;
    int nsamples = npositives + nnegatives;
    cv::Size model(64, 128);

    sft::Octave boost;
    cv::Mat train_data(nfeatures, nsamples, CV_32FC1);

    sft::FeaturePool pool(model, nfeatures);

    cv::RNG rng;

    for (int y = 0; y < nfeatures; ++y)
        for (int x = 0; x < nsamples; ++x)
            train_data.at<float>(y, x) = rng.uniform(0.f, 1.f);

    int tflag = CV_COL_SAMPLE;
    cv::Mat responses(nsamples, 1, CV_32FC1);
    for (int y = 0; y < nsamples; ++y)
        responses.at<float>(y, 0) = (y < npositives) ? 1.f : 0.f;


    cv::Mat var_idx(1, nfeatures, CV_32SC1);
    for (int x = 0; x < nfeatures; ++x)
        var_idx.at<int>(0, x) = x;

    // Mat sample_idx;
    cv::Mat sample_idx(1, nsamples, CV_32SC1);
    for (int x = 0; x < nsamples; ++x)
        sample_idx.at<int>(0, x) = x;

    cv::Mat var_type(1, nfeatures + 1, CV_8UC1);
    for (int x = 0; x < nfeatures; ++x)
        var_type.at<uchar>(0, x) = CV_VAR_ORDERED;

    var_type.at<uchar>(0, nfeatures) = CV_VAR_CATEGORICAL;

    cv::Mat missing_mask;

    CvBoostParams params;
    {
        params.max_categories       = 10;
        params.max_depth            = 2;
        params.min_sample_count     = 2;
        params.cv_folds             = 0;
        params.truncate_pruned_tree = false;

        /// ??????????????????
        params.regression_accuracy = 0.01;
        params.use_surrogates      = false;
        params.use_1se_rule        = false;

        ///////// boost params
        params.boost_type       = CvBoost::GENTLE;
        params.weak_count       = 1;
        params.split_criteria   = CvBoost::SQERR;
        params.weight_trim_rate = 0.95;
    }

    bool update = false;

    boost.train(train_data, responses, var_idx, sample_idx, var_type, missing_mask);

    // CvFileStorage* fs = cvOpenFileStorage( "/home/kellan/train_res.xml", 0, CV_STORAGE_WRITE );
    // boost.write(fs, "test_res");

    // cvReleaseFileStorage( &fs );
}