model_fitting_demo.cpp

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/*
 * model_fitting_demo.cpp
 *
 *  Created on: Jun 8, 2010
 *      Author: sturm
 */

#include <ros/ros.h>

#include "articulation_models/models/factory.h"

#include "articulation_msgs/ModelMsg.h"
#include "articulation_msgs/TrackMsg.h"
#include "articulation_msgs/ParamMsg.h"

using namespace std;
using namespace articulation_models;
using namespace articulation_msgs;

#include <boost/random.hpp>
#include <boost/random/normal_distribution.hpp>

int main(int argc, char** argv) {
        ros::init(argc, argv, "model_fitting");
        ros::NodeHandle n;
        ros::Publisher model_pub = n.advertise<ModelMsg> ("model", 5);
        ros::Rate loop_rate(5);
        int count = 0;

        boost::normal_distribution<> nd(0.0, 0.01);
        boost::mt19937 rng;
        boost::variate_generator<boost::mt19937&, boost::normal_distribution<> >
                        var_nor(rng, nd);

        MultiModelFactory factory;

        ModelMsg model_msg;
        model_msg.name = "rotational";
        ParamMsg sigma_param;
        sigma_param.name = "sigma_position";
        sigma_param.value = 0.02;
        sigma_param.type = ParamMsg::PRIOR;
        sigma_param.name = "sigma_orientation";
        sigma_param.value = M_PI*10;
        sigma_param.type = ParamMsg::PRIOR;
        model_msg.params.push_back(sigma_param);

        model_msg.track.header.stamp = ros::Time();
        model_msg.track.header.frame_id = "/";

        while (ros::ok()) {

                geometry_msgs::Pose pose;
                pose.position.x = cos(count / 30.0)+var_nor();
                pose.position.y = sin(count / 30.0)+var_nor();
                pose.position.z = var_nor();
                pose.orientation.x = 0;
                pose.orientation.y = 0;
                pose.orientation.z = 0;
                pose.orientation.w = 1;
                model_msg.track.pose.push_back(pose);

                if(model_msg.track.pose.size()<3) continue;

                cout <<"creating object"<<endl;
                GenericModelPtr model_instance = factory.restoreModel(model_msg);
                cout <<"fitting"<<endl;
                model_instance->fitModel();
                cout <<"evaluating"<<endl;
                model_instance->evaluateModel();
                cout <<"done"<<endl;

                cout << "model class = "<< model_instance->getModelName() << endl;
                cout << "       radius = "<<model_instance->getParam("rot_radius")<< endl;
                cout << "       center.x = "<<model_instance->getParam("rot_center.x")<< endl;
                cout << "       center.y = "<<model_instance->getParam("rot_center.y")<< endl;
                cout << "       center.z = "<<model_instance->getParam("rot_center.z")<< endl;
                cout << "       log LH = " << model_instance->getParam("loglikelihood")<< endl;

                ModelMsg fitted_model_msg = model_instance->getModel();
                model_pub.publish(fitted_model_msg);

                ros::spinOnce();
                loop_rate.sleep();
                ++count;
        }
}

---

articulation_tutorials
Author(s): Juergen Sturm
autogenerated on Fri Jan 11 09:58:51 2013