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OTHER2017/EvalWiFiSigStrength.h
2017-04-18 18:03:31 +02:00

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6.3 KiB
C++

#ifndef EVALWIFISIGSTRENGTH_H
#define EVALWIFISIGSTRENGTH_H
#include "Indoor/sensors/radio/setup/WiFiOptimizer.h"
#include "Indoor/sensors/radio/setup/WiFiFingerprint.h"
#include "Indoor/sensors/radio/setup/WiFiFingerprints.h"
#include "Indoor/sensors/radio/setup/WiFiOptimizer.h"
#include "Indoor/sensors/radio/VAPGrouper.h"
#include "Indoor/sensors/offline/FileReader.h"
#include "Indoor/floorplan/v2/Floorplan.h"
#include "Indoor/floorplan/v2/FloorplanReader.h"
#include "Indoor/floorplan/v2/FloorplanHelper.h"
#include "Indoor/floorplan/v2/FloorplanCeilings.h"
#include <KLib/misc/gnuplot/Gnuplot.h>
#include <KLib/misc/gnuplot/GnuplotSplot.h>
#include <KLib/misc/gnuplot/GnuplotSplotElementPoints.h>
#include <KLib/misc/gnuplot/GnuplotSplotElementColorPoints.h>
#include <KLib/misc/gnuplot/GnuplotSplotElementLines.h>
#include <KLib/misc/gnuplot/GnuplotPlot.h>
#include <KLib/misc/gnuplot/GnuplotPlotElementHistogram.h>
#include <KLib/math/statistics/Statistics.h>
#include "Structs.h"
#include "plots/Plotty.h"
#include "CSV.h"
#include "Helper.h"
#include <unordered_set>
/**
* read path
* fetch wifi
* use given model to estimate the most likely location
* -> WIFI ONLY
*/
class EvalWiFiSigStrength {
private:
Floorplan::IndoorMap* map;
BBox3 mapBBox;
WiFiFingerprints calib;
public:
/** ctor with map and fingerprints */
EvalWiFiSigStrength(const std::string& mapFile, const std::string& fpFile) {
// load floorplan
map = Floorplan::Reader::readFromFile(mapFile);
// estimate bbox
mapBBox = FloorplanHelper::getBBox(map);
// load fingerprints
calib = WiFiFingerprints(fpFile);
// remove some stuff
LeHelper::removeNonFHWS(calib);
}
float scale(const float val, const float min, const float max) {
return (val - min) / (max-min);
}
void forAP_avg(Plotty* p, const MACAddress& mac) {
VAPGrouper vap(VAPGrouper::Mode::LAST_MAC_DIGIT_TO_ZERO, VAPGrouper::Aggregation::AVERAGE);
// get AP/floor
std::pair<Floorplan::AccessPoint*, Floorplan::Floor*> _ap = FloorplanHelper::getAP(map, mac);
const Floorplan::Floor* floor = _ap.second;
const Floorplan::AccessPoint* ap = _ap.first;
// copy
WiFiFingerprints calib = this->calib;
for (WiFiFingerprint& fp : calib.getFingerprints()) {
fp.measurements = vap.group(fp.measurements);
}
// plot
std::cout << ap->mac << std::endl;
const Point3 apPos3 = ap->getPos(floor);
K::GnuplotPoint3 apPos(apPos3.x, apPos3.y, apPos3.z);
p->points.add(apPos);
// process every fingerprint location
for (const WiFiFingerprint& fp : calib.getFingerprints()) {
// either 0 entries [ap not seen here] or 1 entry due to vap grouping [ap seen here]
std::vector<WiFiMeasurement> mes = fp.getAllForMAC(mac);
if (!mes.empty()) {
const float rssi = mes.front().getRSSI();
const float s = scale(rssi, -100, -40);
const Color c = Color::fromHSV(s*100, 255, 255);
p->addFloorRect(fp.pos_m, 1, c);
}
}
}
/** SPECIAL PAPER_PLOT OUTPUT */
void forPaperNN(Plotty* p, const MACAddress& mac) {
VAPGrouper vap(VAPGrouper::Mode::LAST_MAC_DIGIT_TO_ZERO, VAPGrouper::Aggregation::AVERAGE);
// get AP/floor
std::pair<Floorplan::AccessPoint*, Floorplan::Floor*> _ap = FloorplanHelper::getAP(map, mac);
const Floorplan::Floor* floor = _ap.second;
const Floorplan::AccessPoint* ap = _ap.first;
// copy
WiFiFingerprints calib = this->calib;
for (WiFiFingerprint& fp : calib.getFingerprints()) {
fp.measurements = vap.group(fp.measurements);
}
const Point3 apPos3 = ap->getPos(floor);
K::GnuplotPoint3 apPos(apPos3.x, apPos3.y, apPos3.z);
p->points.add(apPos);
p->points.setPointSize(1.5); // The AP
// get all positions
struct Entry {
Point3 pos;
float rssi;
Entry(Point3 pos, float rssi) : pos(pos), rssi(rssi) {;}
};
std::vector<Entry> entries;
// process every fingerprint location
for (const WiFiFingerprint& fp : calib.getFingerprints()) {
// either 0 entries [ap not seen here] or 1 entry due to vap grouping [ap seen here]
std::vector<WiFiMeasurement> mes = fp.getAllForMAC(mac);
if (!mes.empty()) {
const float rssi = mes.front().getRSSI();
Entry e(fp.pos_m - Point3(0,0,1.3), rssi);
// only floor 0!!!!!
if (e.pos.z != 0) {continue;}
entries.push_back(e);
}
}
const float ss = 1.0;
for (const Floorplan::Floor* f : map->floors) {
// only floor 0!!!!!
if (f->atHeight != 0) {continue;}
BBox3 bb = FloorplanHelper::getBBox(f);
for (float y = bb.getMin().y; y < bb.getMax().y; y += ss) {
for (float x = bb.getMin().x; x < bb.getMax().x; x += ss) {
const Point3 pos(x,y,f->atHeight);
// float rssi = 0; float distSum = 0.01;
// for (const Entry& e : entries) {
// const float dist = e.pos.getDistance(pos);
// const float imp = 1.0 / std::pow((dist), 4);
// rssi += e.rssi * imp;
// distSum += imp;
// if (dist < 5) {rssi = e.rssi; distSum = 1;}
// }
// rssi /= distSum;
auto comp = [&] (const Entry& e1, const Entry& e2) {return e1.pos.getDistance(pos) < e2.pos.getDistance(pos);};
const auto& it = std::min_element(entries.begin(), entries.end(), comp);
if (it->pos.getDistance(pos) > 2.99) {continue;}
// const float rssi = it->rssi;
// const float s = scale(rssi, -100, -40);
// const Color c = Color::fromHSV(s*100, 255, 255);
// p->addFloorRect(pos, ss/2, c);
}
}
}
for (Entry e : entries) {
// FIX ONE FP NEAR THE AP
if (e.pos.xy().getDistance(Point2(67.2,32.1)) < 0.1) {
e.pos.y += 0.75;
}
p->gp << "set label '\\scriptsize{" << std::round(e.rssi) << "}' front at " << (e.pos.x-2) << "," << e.pos.y << "\n";
const float rssi = e.rssi;
const float s = scale(rssi, -100, -40);
const Color c = Color::fromHSV(s*100, 255, 255);
p->addFloorRect(e.pos, 2.6, c, 1.4);
}
}
void perAP_avg() {
std::vector<std::pair<Floorplan::AccessPoint*, Floorplan::Floor*>> aps = FloorplanHelper::getAPs(map);
for (const auto& it : aps) {
const Floorplan::Floor* floor = it.second;
const Floorplan::AccessPoint* ap = it.first;
const MACAddress mac(ap->mac);
Plotty* p = new Plotty(map);
p->setTitle(ap->mac);
p->buildFloorplan();
forAP_avg(p, mac);
p->plot();
int i = 0; (void) i;
// MACs:
// d8:84:66:4a:23:d0 <<<< BEST
// d8:84:66:4a:25:c0
// d8:84:66:4a:4c:60
}
}
};
#endif // EVALWIFISIGSTRENGTH_H