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/*
* This file is part of JGrasstools (http://www.jgrasstools.org)
* (C) HydroloGIS - www.hydrologis.com
*
* JGrasstools is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see .
*/
package org.jgrasstools.gears.modules.r.houghes;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSHYDRO_DRAFT;
import static org.jgrasstools.gears.i18n.GearsMessages.OMSHYDRO_LICENSE;
import java.util.ArrayList;
import java.util.List;
import javax.media.jai.iterator.RandomIter;
import oms3.annotations.Author;
import oms3.annotations.Description;
import oms3.annotations.Execute;
import oms3.annotations.In;
import oms3.annotations.Keywords;
import oms3.annotations.Label;
import oms3.annotations.License;
import oms3.annotations.Name;
import oms3.annotations.Status;
import oms3.annotations.Unit;
import org.geotools.coverage.grid.GridCoverage2D;
import org.geotools.coverage.grid.GridGeometry2D;
import org.geotools.data.simple.SimpleFeatureCollection;
import org.geotools.feature.DefaultFeatureCollection;
import org.jgrasstools.gears.io.rasterreader.OmsRasterReader;
import org.jgrasstools.gears.io.vectorreader.OmsVectorReader;
import org.jgrasstools.gears.io.vectorwriter.OmsVectorWriter;
import org.jgrasstools.gears.libs.modules.JGTConstants;
import org.jgrasstools.gears.libs.modules.JGTModel;
import org.jgrasstools.gears.libs.modules.ThreadedRunnable;
import org.jgrasstools.gears.modules.r.summary.OmsZonalStats;
import org.jgrasstools.gears.utils.coverage.CoverageUtilities;
import org.jgrasstools.gears.utils.features.FeatureUtilities;
import org.opengis.feature.simple.SimpleFeature;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.Point;
import com.vividsolutions.jts.geom.Polygon;
import com.vividsolutions.jts.geom.prep.PreparedGeometry;
import com.vividsolutions.jts.geom.prep.PreparedGeometryFactory;
import com.vividsolutions.jts.index.strtree.STRtree;
@Description(OmsHoughCirclesRasterCleaner.DESCRIPTIO)
@Author(name = OmsHoughCirclesRasterCleaner.AUTHORS, contact = "")
@Keywords(OmsHoughCirclesRasterCleaner.KEYWORDS)
@Label(JGTConstants.RASTERPROCESSING)
@Name(OmsHoughCirclesRasterCleaner.NAME)
@Status(OMSHYDRO_DRAFT)
@License(OMSHYDRO_LICENSE)
public class OmsHoughCirclesRasterCleaner extends JGTModel {
@Description(inVector_DESCR)
@In
public SimpleFeatureCollection inVector;
@Description(inRaster_DESCR)
@In
public GridCoverage2D inRaster;
@Description(pMaxOverlapCount_DESCR)
@In
public int pMaxOverlapCount = 3;
@Description(pMaxOverlap_DESCR)
@Unit("%")
@In
public Double pMaxOverlap;
@Description(outCircles_DESCR)
@In
public SimpleFeatureCollection outCircles;
// VARS DESCR START
public static final String NAME = "houghcirclesrastercleaner";
public static final String KEYWORDS = "Hough, circle, cleaner";
public static final String AUTHORS = "Andrea Antonello (www.hydrologis.com)";
public static final String DESCRIPTIO = "Module to remove circles after the HoughCirclesRaster module.";
public static final String inVector_DESCR = "The input circles vector.";
public static final String inRaster_DESCR = "The raster from which the circles where generated.";
public static final String pMaxOverlap_DESCR = "The maximum permitted overlap.";
public static final String pMaxOverlapCount_DESCR = "The maximum permitted overlap count.";
public static final String outCircles_DESCR = "The leftover circles.";
// VARS DESCR END
@SuppressWarnings("unchecked")
@Execute
public void process() throws Exception {
checkNull(inVector, pMaxOverlap, inRaster);
RandomIter rasterIter = CoverageUtilities.getRandomIterator(inRaster);
GridGeometry2D gridGeometry = inRaster.getGridGeometry();
double[] tm_utm_tac = new double[3];
STRtree circlesTree = FeatureUtilities.featureCollectionToSTRtree(inVector);
List circlesList = FeatureUtilities.featureCollectionToList(inVector);
DefaultFeatureCollection outFC = new DefaultFeatureCollection();
for( SimpleFeature circleFeature : circlesList ) {
Geometry geometry = (Geometry) circleFeature.getDefaultGeometry();
Polygon circle = (Polygon) geometry.getGeometryN(0);
PreparedGeometry preparedCircle = PreparedGeometryFactory.prepare(circle);
List circlesAround = circlesTree.query(circle.getEnvelopeInternal());
List intersectedCircles = new ArrayList();
for( SimpleFeature circleAround : circlesAround ) {
if (circleAround.equals(circleFeature)) {
continue;
}
Geometry circleAroundGeometry = (Geometry) circleAround.getDefaultGeometry();
if (preparedCircle.intersects(circleAroundGeometry)) {
intersectedCircles.add(circleAroundGeometry);
}
}
Point centroid = circle.getCentroid();
int intersectionsCount = intersectedCircles.size();
if (intersectionsCount != 0) {
// check how many circles overlapped
if (intersectionsCount > pMaxOverlapCount) {
continue;
}
// check if the circles overlap too much, i.e. cover their baricenter
boolean intersected = false;
for( Geometry intersectedCircle : intersectedCircles ) {
if (intersectedCircle.intersects(centroid)) {
intersected = true;
break;
}
}
if (intersected) {
continue;
}
}
// check if the center has a raster value, i.e. is not empty
double value = CoverageUtilities.getValue(inRaster, centroid.getCoordinate());
if (!JGTConstants.isNovalue(value)) {
continue;
}
// check if the inner part of the circle is indeed rather empty
// min, max, mean, var, sdev, activeCellCount, passiveCellCount
double[] stats = OmsZonalStats.polygonStats(circle, gridGeometry, rasterIter, false, tm_utm_tac, 0, pm);
// if we have many more active cells than passive cells, that is not a circle
double activeCells = stats[5];
double novalues = stats[6];
if (activeCells * 1.5 > novalues) {
continue;
}
// take it as valid circle
outFC.add(circleFeature);
}
outCircles = outFC;
rasterIter.done();
}
@SuppressWarnings("rawtypes")
public static void main( String[] args ) throws Exception {
ThreadedRunnable< ? > runner = new ThreadedRunnable(8, null);
int[] i = {2, 4, 6, 8, 10, 12, 14, 16, 18, 20, 22, 24, 26, 28, 30};
for( int index : i ) {
final int _index = index;
runner.executeRunnable(new Runnable(){
public void run() {
try {
String inRaster = "/home/hydrologis/data/rilievo_tls/avgres/las/vertical_slices/slice_" + _index
+ ".0.asc";
String inShp = "/home/hydrologis/data/rilievo_tls/avgres/las/vertical_slices/slice_vector_" + _index
+ ".0.shp";
String outShp = "/home/hydrologis/data/rilievo_tls/avgres/las/vertical_slices/slice_vector_cleaned_"
+ _index + ".0.shp";
GridCoverage2D src = OmsRasterReader.readRaster(inRaster);
OmsHoughCirclesRaster h = new OmsHoughCirclesRaster();
h.inRaster = src;
h.pMinRadius = 0.1;
h.pMaxRadius = 0.5;
h.pRadiusIncrement = 0.01;
h.pMaxCircleCount = 500;
h.process();
OmsVectorWriter.writeVector(inShp, h.outCircles);
SimpleFeatureCollection inVector = OmsVectorReader.readVector(inShp);
OmsHoughCirclesRasterCleaner hCleaner = new OmsHoughCirclesRasterCleaner();
hCleaner.inRaster = src;
hCleaner.inVector = inVector;
hCleaner.pMaxOverlap = 0.1;
hCleaner.pMaxOverlapCount = 5;
hCleaner.process();
OmsVectorWriter.writeVector(outShp, hCleaner.outCircles);
} catch (Exception e) {
e.printStackTrace();
}
}
});
}
runner.waitAndClose();
}
}
