public double icpStep(
DoubleOrientedPoint pret, IGMap map, DoubleOrientedPoint p, double[] readings) {
int angleIndex = initialBeamsSkip;
DoubleOrientedPoint lp = new DoubleOrientedPoint(p.x, p.y, p.theta);
lp.x += Math.cos(p.theta) * laserPose.x - Math.sin(p.theta) * laserPose.y;
lp.y += Math.sin(p.theta) * laserPose.x + Math.cos(p.theta) * laserPose.y;
lp.theta += laserPose.theta;
int skip = 0;
double freeDelta = map.getDelta() * freeCellRatio;
List<DoublePointPair> pairs = new ArrayList<DoublePointPair>();
for (int rIndex = initialBeamsSkip; rIndex < readings.length; rIndex++, angleIndex++) {
skip++;
skip = skip > likelihoodSkip ? 0 : skip;
if (readings[rIndex] > usableRange || readings[rIndex] == 0.0) continue;
if (skip != 0) continue;
DoublePoint phit = new DoublePoint(lp.x, lp.y);
phit.x += readings[rIndex] * Math.cos(lp.theta + laserAngles[angleIndex]);
phit.y += readings[rIndex] * Math.sin(lp.theta + laserAngles[angleIndex]);
IntPoint iphit = map.world2map(phit);
DoublePoint pfree = new DoublePoint(lp.x, lp.y);
pfree.x +=
(readings[rIndex] - map.getDelta() * freeDelta)
* Math.cos(lp.theta + laserAngles[angleIndex]);
pfree.y +=
(readings[rIndex] - map.getDelta() * freeDelta)
* Math.sin(lp.theta + laserAngles[angleIndex]);
pfree.x = pfree.x - phit.x;
pfree.y = pfree.y - phit.y;
IntPoint ipfree = map.world2map(pfree);
boolean found = false;
DoublePoint bestMu = new DoublePoint(0., 0.);
DoublePoint bestCell = new DoublePoint(0., 0.);
for (int xx = -kernelSize; xx <= kernelSize; xx++)
for (int yy = -kernelSize; yy <= kernelSize; yy++) {
IntPoint pr = new IntPoint(iphit.x + xx, iphit.y + yy);
IntPoint pf = new IntPoint(pr.x + ipfree.x, pr.y + ipfree.y);
PointAccumulator cell = (PointAccumulator) map.cell(pr, true);
PointAccumulator fcell = (PointAccumulator) map.cell(pf, true);
if (cell.doubleValue() > fullnessThreshold && fcell.doubleValue() < fullnessThreshold) {
DoublePoint mu = DoublePoint.minus(phit, cell.mean());
if (!found) {
bestMu = mu;
bestCell = cell.mean();
found = true;
} else if (DoublePoint.mulD(mu, mu) < DoublePoint.mulD(bestMu, bestMu)) {
bestMu = mu;
bestCell = cell.mean();
}
}
}
if (found) {
pairs.add(new DoublePointPair(phit, bestCell));
}
}
DoubleOrientedPoint result = new DoubleOrientedPoint(0.0, 0.0, 0.0);
LOG.error("result(" + pairs.size() + ")=" + result.x + " " + result.y + " " + result.theta);
pret.x = p.x + result.x;
pret.y = p.y + result.y;
pret.theta = p.theta + result.theta;
pret.theta = Math.atan2(Math.sin(pret.theta), Math.cos(pret.theta));
return score(map, p, readings);
}
double score(IGMap map, DoubleOrientedPoint p, double[] readings) {
double s = 0;
int angleIndex = initialBeamsSkip;
DoubleOrientedPoint lp = new DoubleOrientedPoint(p.x, p.y, p.theta);
lp.x += Math.cos(p.theta) * laserPose.x - Math.sin(p.theta) * laserPose.y;
lp.y += Math.sin(p.theta) * laserPose.x + Math.cos(p.theta) * laserPose.y;
lp.theta += laserPose.theta;
int skip = 0;
double freeDelta = map.getDelta() * freeCellRatio;
for (int rIndex = initialBeamsSkip; rIndex < readings.length; rIndex++, angleIndex++) {
skip++;
skip = skip > likelihoodSkip ? 0 : skip;
if (skip != 0 || readings[rIndex] > usableRange || readings[rIndex] == 0.0) continue;
DoublePoint phit = new DoublePoint(lp.x, lp.y);
phit.x += readings[rIndex] * Math.cos(Utils.theta(lp.theta + laserAngles[angleIndex]));
phit.y += readings[rIndex] * Math.sin(Utils.theta(lp.theta + laserAngles[angleIndex]));
IntPoint iphit = map.world2map(phit);
DoublePoint pfree = new DoublePoint(lp.x, lp.y);
pfree.x +=
(readings[rIndex] - map.getDelta() * freeDelta)
* Math.cos(Utils.theta(lp.theta + laserAngles[angleIndex]));
pfree.y +=
(readings[rIndex] - map.getDelta() * freeDelta)
* Math.sin(Utils.theta(lp.theta + laserAngles[angleIndex]));
pfree.x = pfree.x - phit.x;
pfree.y = pfree.y - phit.y;
IntPoint ipfree = map.world2map(pfree);
boolean found = false;
DoublePoint bestMu = new DoublePoint(0., 0.);
for (int xx = -kernelSize; xx <= kernelSize; xx++) {
for (int yy = -kernelSize; yy <= kernelSize; yy++) {
IntPoint pr = new IntPoint(iphit.x + xx, iphit.y + yy);
IntPoint pf = new IntPoint(pr.x + ipfree.x, pr.y + ipfree.y);
// int ss = map.getStorage().cellState(pr);
// if ((ss) > 0) {
PointAccumulator cell = (PointAccumulator) map.cell(pr, true);
PointAccumulator fcell = (PointAccumulator) map.cell(pf, true);
if (cell != null && fcell != null) {
if (cell.doubleValue() > fullnessThreshold && fcell.doubleValue() < fullnessThreshold) {
DoublePoint mu = DoublePoint.minus(phit, cell.mean());
if (!found) {
bestMu = mu;
found = true;
} else {
bestMu = DoublePoint.mulD(mu, mu) < DoublePoint.mulD(bestMu, bestMu) ? mu : bestMu;
}
}
}
// }
}
}
if (found) {
s += Math.exp(-1. / (gaussianSigma * DoublePoint.mulD(bestMu, bestMu)));
}
}
return s;
}
public void computeActiveArea(IGMap map, DoubleOrientedPoint p, double[] readings) {
if (m_activeAreaComputed) return;
// Set<IntPoint> activeArea = new HashSet<IntPoint>();
DoubleOrientedPoint lp = new DoubleOrientedPoint(p.x, p.y, p.theta);
lp.x += Math.cos(p.theta) * laserPose.x - Math.sin(p.theta) * laserPose.y;
lp.y += Math.sin(p.theta) * laserPose.x + Math.cos(p.theta) * laserPose.y;
lp.theta += laserPose.theta;
// IntPoint p0 = map.world2map(lp);
DoublePoint min = map.map2world(new IntPoint(0, 0));
DoublePoint max = map.map2world(new IntPoint(map.getMapSizeX() - 1, map.getMapSizeY() - 1));
if (lp.x < min.x) min.x = lp.x;
if (lp.y < min.y) min.y = lp.y;
if (lp.x > max.x) max.x = lp.x;
if (lp.y > max.y) max.y = lp.y;
int readingIndex;
int angleIndex = initialBeamsSkip;
for (readingIndex = initialBeamsSkip; readingIndex < laserBeams; readingIndex++, angleIndex++) {
double r = readings[readingIndex];
double angle = laserAngles[angleIndex];
if (r > laserMaxRange || r == 0.0 || r > Double.MAX_VALUE) continue;
double d = r > usableRange ? usableRange : r;
// DoublePoint phit = new DoublePoint(lp.x, lp.y);
double phitx = lp.x, phity = lp.y;
phitx += d * Math.cos(lp.theta + angle);
phity += d * Math.sin(lp.theta + angle);
if (phitx < min.x) min.x = phitx;
if (phity < min.y) min.y = phity;
if (phitx > max.x) max.x = phitx;
if (phity > max.y) max.y = phity;
}
if (!map.isInsideD(min) || !map.isInsideD(max)) {
DoublePoint lmin = map.map2world(new IntPoint(0, 0));
DoublePoint lmax = map.map2world(new IntPoint(map.getMapSizeX() - 1, map.getMapSizeY() - 1));
min.x = (min.x >= lmin.x) ? lmin.x : min.x - enlargeStep;
max.x = (max.x <= lmax.x) ? lmax.x : max.x + enlargeStep;
min.y = (min.y >= lmin.y) ? lmin.y : min.y - enlargeStep;
max.y = (max.y <= lmax.y) ? lmax.y : max.y + enlargeStep;
map.resize(min.x, min.y, max.x, max.y);
}
// readingIndex = initialBeamsSkip;
// angleIndex = initialBeamsSkip;
// for (readingIndex = initialBeamsSkip; readingIndex < laserBeams; readingIndex++,
// angleIndex++) {
// if (generateMap) {
// double d = readings[readingIndex];
// if (d > laserMaxRange || d == 0.0 || d > Double.MAX_VALUE)
// continue;
// if (d > usableRange)
// d = usableRange;
//
// DoublePoint phit = new DoublePoint(d * Math.cos(lp.theta +
// laserAngles[angleIndex]) + lp.x, d * Math.sin(lp.theta + laserAngles[angleIndex]) + lp.y);
// p0 = map.world2map(lp);
// IntPoint p1 = map.world2map(phit);
//
// d += map.getDelta();
// GridLineTraversalLine line = new GridLineTraversalLine();
// line.points = m_linePoints;
// GridLineTraversalLine.gridLine(p0, p1, line);
// for (int i = 0; i < line.numPoints - 1; i++) {
// IntPoint patch = (m_linePoints[i]);
// activeArea.add(patch);
// }
// if (d <= usableRange) {
// IntPoint patch = (p1);
// activeArea.add(patch);
// }
// } else {
// double r = readings[readingIndex];
// double angle = laserAngles[angleIndex];
// if (readings[readingIndex] > laserMaxRange || readings[readingIndex] >
// usableRange) {
// continue;
// }
//// DoublePoint phit = new DoublePoint(lp.x, lp.y);
// double phitx = lp.x;
// double phity = lp.y;
// phitx += r * Math.cos(lp.theta + angle);
// phity += r * Math.sin(lp.theta + angle);
//
// IntPoint p1 = map.world2map(phitx, phity);
// assert (p1.x >= 0 && p1.y >= 0);
// IntPoint cp = (p1);
// assert (cp.x >= 0 && cp.y >= 0);
// activeArea.add(cp);
// }
// }
// this allocates the unallocated cells in the active area of the map
// map.setActiveArea(activeArea, false);
m_activeAreaComputed = true;
}