281 lines
7.7 KiB
C++
281 lines
7.7 KiB
C++
#ifndef NAV_MESH_FILTER_H
|
|
#define NAV_MESH_FILTER_H
|
|
|
|
#include "mesh.h"
|
|
#include "../Settings.h"
|
|
#include <omp.h>
|
|
|
|
#include <Indoor/geo/Heading.h>
|
|
#include <Indoor/math/Distributions.h>
|
|
|
|
#include <Indoor/smc/Particle.h>
|
|
#include <Indoor/smc/filtering/ParticleFilter.h>
|
|
#include <Indoor/smc/filtering/ParticleFilterInitializer.h>
|
|
#include <Indoor/smc/filtering/resampling/ParticleFilterResamplingSimple.h>
|
|
#include <Indoor/smc/filtering/resampling/ParticleFilterResamplingKLD.h>
|
|
#include <Indoor/smc/filtering/estimation/ParticleFilterEstimationBoxKDE.h>
|
|
#include <Indoor/smc/filtering/estimation/ParticleFilterEstimationWeightedAverage.h>
|
|
#include <Indoor/smc/filtering/estimation/ParticleFilterEstimationMax.h>
|
|
#include <Indoor/navMesh/walk/NavMeshWalkSimple.h>
|
|
#include <Indoor/navMesh/walk/NavMeshWalkEval.h>
|
|
#include <Indoor/sensors/radio/WiFiMeasurements.h>
|
|
#include <Indoor/data/Timestamp.h>
|
|
#include <Indoor/sensors/radio/WiFiProbabilityFree.h>
|
|
#include <Indoor/sensors/activity/ActivityDetector.h>
|
|
|
|
struct MyState {
|
|
|
|
/** the state's position (within the mesh) */
|
|
MyNavMeshLocation pos;
|
|
|
|
/** the state's heading */
|
|
Heading heading;
|
|
|
|
MyState() : pos(), heading(0) {;}
|
|
|
|
MyState(Point3 p) : pos(p, nullptr), heading(0){;}
|
|
|
|
MyState& operator += (const MyState& o) {
|
|
pos.tria = nullptr; // impossible
|
|
pos.pos += o.pos.pos;
|
|
return *this;
|
|
}
|
|
|
|
MyState& operator /= (const double val) {
|
|
pos.tria = nullptr; // impossible
|
|
pos.pos /= val;
|
|
return *this;
|
|
}
|
|
|
|
MyState operator * (const double val) const {
|
|
MyState res;
|
|
res.pos.pos = pos.pos * val;
|
|
return res;
|
|
}
|
|
|
|
float getX(){
|
|
return pos.pos.x;
|
|
}
|
|
|
|
float getY() {
|
|
return pos.pos.y;
|
|
}
|
|
|
|
float getBinValue(const int dim) const {
|
|
switch (dim) {
|
|
case 0: return this->pos.pos.x;
|
|
case 1: return this->pos.pos.y;
|
|
case 2: return this->pos.pos.z;
|
|
case 3: return this->heading.getRAD();
|
|
}
|
|
throw "cant find this value within the bin";
|
|
}
|
|
|
|
};
|
|
|
|
struct MyControl {
|
|
|
|
int numStepsSinceLastEval = 0;
|
|
float headingChangeSinceLastEval = 0;
|
|
|
|
void afterEval() {
|
|
numStepsSinceLastEval = 0;
|
|
headingChangeSinceLastEval = 0;
|
|
}
|
|
|
|
|
|
};
|
|
|
|
struct MyObservation {
|
|
|
|
// pressure
|
|
float sigmaPressure = 0.10f;
|
|
float relativePressure = 0;
|
|
|
|
//wifi
|
|
WiFiMeasurements wifi;
|
|
|
|
//time
|
|
Timestamp currentTime;
|
|
|
|
//activity
|
|
Activity activity;
|
|
|
|
};
|
|
|
|
class MyPFInitUniform : public SMC::ParticleFilterInitializer<MyState> {
|
|
|
|
const MyNavMesh* mesh;
|
|
|
|
public:
|
|
|
|
MyPFInitUniform(const MyNavMesh* mesh) : mesh(mesh) {
|
|
;
|
|
}
|
|
|
|
virtual void initialize(std::vector<SMC::Particle<MyState>>& particles) override {
|
|
|
|
/** random position and heading within the mesh */
|
|
Distribution::Uniform<float> dHead(0, 2*M_PI);
|
|
MyNavMeshRandom rnd = mesh->getRandom();
|
|
for (SMC::Particle<MyState>& p : particles) {
|
|
p.state.pos = rnd.draw();
|
|
p.state.heading = dHead.draw();
|
|
p.weight = 1.0 / particles.size();
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
class MyPFInitFixed : public SMC::ParticleFilterInitializer<MyState> {
|
|
|
|
const MyNavMesh* mesh;
|
|
const Point3 pos;
|
|
|
|
public:
|
|
|
|
MyPFInitFixed(const MyNavMesh* mesh, const Point3 pos) : mesh(mesh), pos(pos) {
|
|
;
|
|
}
|
|
|
|
virtual void initialize(std::vector<SMC::Particle<MyState>>& particles) override {
|
|
|
|
/** random position and heading within the mesh */
|
|
Distribution::Uniform<float> dHead(0, 2*M_PI);
|
|
for (SMC::Particle<MyState>& p : particles) {
|
|
p.state.pos = mesh->getLocation(pos);
|
|
p.state.heading = dHead.draw();
|
|
p.weight = 1.0 / particles.size();
|
|
}
|
|
}
|
|
|
|
};
|
|
|
|
|
|
class MyPFTrans : public SMC::ParticleFilterTransition<MyState, MyControl> {
|
|
|
|
using MyNavMeshWalk = NM::NavMeshWalkSimple<MyNavMeshTriangle>;
|
|
MyNavMeshWalk walker;
|
|
|
|
public:
|
|
|
|
MyPFTrans(MyNavMesh& mesh) : walker(mesh) {
|
|
|
|
// how to evaluate drawn points
|
|
walker.addEvaluator(new NM::WalkEvalHeadingStartEndNormal<MyNavMeshTriangle>(0.04));
|
|
walker.addEvaluator(new NM::WalkEvalDistance<MyNavMeshTriangle>(0.1));
|
|
//walker.addEvaluator(new NM::WalkEvalApproachesTarget<MyNavMeshTriangle>(0.9)); // 90% for particles moving towards the target
|
|
|
|
}
|
|
|
|
void transition(std::vector<SMC::Particle<MyState>>& particles, const MyControl* control) override {
|
|
|
|
Distribution::Normal<float> dStepSizeFloor(0.70, 0.1);
|
|
Distribution::Normal<float> dStepSizeStair(0.35, 0.1);
|
|
Distribution::Normal<float> dHeading(0.0, 0.1);
|
|
|
|
#pragma omp parallel for num_threads(3)
|
|
for (int i = 0; i < particles.size(); ++i) {
|
|
SMC::Particle<MyState>& p = particles[i];
|
|
|
|
// how to walk
|
|
MyNavMeshWalkParams params;
|
|
params.heading = p.state.heading + control->headingChangeSinceLastEval + dHeading.draw();
|
|
params.numSteps = control->numStepsSinceLastEval;
|
|
params.start = p.state.pos;
|
|
|
|
params.stepSizes.stepSizeFloor_m = dStepSizeFloor.draw();
|
|
params.stepSizes.stepSizeStair_m = dStepSizeStair.draw();
|
|
|
|
if(params.stepSizes.stepSizeFloor_m < 0.1 || params.stepSizes.stepSizeStair_m < 0.1){
|
|
params.stepSizes.stepSizeFloor_m = 0.1;
|
|
params.stepSizes.stepSizeStair_m = 0.1;
|
|
}
|
|
|
|
// walk
|
|
MyNavMeshWalk::ResultEntry res = walker.getOne(params);
|
|
|
|
// assign back to particle's state
|
|
p.weight *= res.probability;
|
|
p.state.pos = res.location;
|
|
p.state.heading = res.heading;
|
|
|
|
}
|
|
|
|
// reset the control (0 steps, 0 delta-heading)
|
|
//control->afterEval();
|
|
|
|
}
|
|
|
|
|
|
};
|
|
|
|
class MyPFEval : public SMC::ParticleFilterEvaluation<MyState, MyObservation> {
|
|
|
|
WiFiModel& wifiModel;
|
|
WiFiObserverFree wifiProbability;
|
|
|
|
//TODO: add this to transition probability
|
|
double getStairProb(const SMC::Particle<MyState>& p, const Activity act) {
|
|
|
|
const float kappa = 0.75;
|
|
|
|
switch (act) {
|
|
|
|
case Activity::WALKING:
|
|
if (p.state.pos.tria->getType() == (int) NM::NavMeshType::FLOOR_INDOOR) {return kappa;}
|
|
if (p.state.pos.tria->getType() == (int) NM::NavMeshType::DOOR) {return kappa;}
|
|
if (p.state.pos.tria->getType() == (int) NM::NavMeshType::STAIR_LEVELED) {return kappa;}
|
|
{return 1-kappa;}
|
|
|
|
case Activity::WALKING_UP:
|
|
case Activity::WALKING_DOWN:
|
|
if (p.state.pos.tria->getType() == (int) NM::NavMeshType::STAIR_SKEWED) {return kappa;}
|
|
if (p.state.pos.tria->getType() == (int) NM::NavMeshType::STAIR_LEVELED) {return kappa;}
|
|
if (p.state.pos.tria->getType() == (int) NM::NavMeshType::ELEVATOR) {return kappa;}
|
|
{return 1-kappa;}
|
|
}
|
|
return 1.0;
|
|
}
|
|
|
|
public:
|
|
|
|
MyPFEval(WiFiModel& wifiModel) : wifiModel(wifiModel), wifiProbability(Settings::WiFiModel::sigma, wifiModel){}
|
|
|
|
virtual double evaluation(std::vector<SMC::Particle<MyState>>& particles, const MyObservation& observation) override {
|
|
|
|
double sum = 0;
|
|
const WiFiMeasurements wifiObs = Settings::WiFiModel::vg_eval.group(observation.wifi);
|
|
|
|
|
|
#pragma omp parallel for num_threads(3)
|
|
for (int i = 0; i < particles.size(); ++i) {
|
|
SMC::Particle<MyState>& p = particles[i];
|
|
|
|
double pWifi = wifiProbability.getProbability(p.state.pos.pos, observation.currentTime, wifiObs);
|
|
double pStair = getStairProb(p, observation.activity);
|
|
|
|
//HACK HACK HACK HACK
|
|
double prob = 1.0;
|
|
if(observation.currentTime.ms() > 20801){
|
|
prob = pWifi * pStair;
|
|
}
|
|
|
|
p.weight *= prob;
|
|
|
|
#pragma omp atomic
|
|
sum += prob;
|
|
}
|
|
|
|
return sum;
|
|
|
|
}
|
|
|
|
};
|
|
|
|
|
|
using MyFilter = SMC::ParticleFilter<MyState, MyControl, MyObservation>;
|
|
|
|
|
|
#endif
|