/**
* Perform decomposition for given tile.
*
* @param targetBand The target band.
* @param targetTile The current tile associated with the target band to be computed.
* @throws OperatorException If an error occurs during computation of the filtered value.
*/
public void computeTile(final Band targetBand, final Tile targetTile) {
PolBandUtils.PolSourceBand srcBandList = bandMap.get(targetBand);
if (!clusterCentersComputed) {
computeTerrainClusterCenters(srcBandList, op);
}
final Rectangle targetRectangle = targetTile.getRectangle();
final int x0 = targetRectangle.x;
final int y0 = targetRectangle.y;
final int w = targetRectangle.width;
final int h = targetRectangle.height;
final int maxY = y0 + h;
final int maxX = x0 + w;
final ProductData targetData = targetTile.getDataBuffer();
final TileIndex trgIndex = new TileIndex(targetTile);
// System.out.println("x0 = " + x0 + ", y0 = " + y0 + ", w = " + w + ", h = " + h);
for (int y = y0; y < maxY; ++y) {
trgIndex.calculateStride(y);
for (int x = x0; x < maxX; ++x) {
targetData.setElemIntAt(trgIndex.getIndex(x), getOutputClusterIndex(x, y));
}
}
}
@Override
public void computeTile(Band band, Tile targetTile, ProgressMonitor pm) throws OperatorException {
ProductData dataBuffer = targetTile.getRawSamples();
Rectangle rectangle = targetTile.getRectangle();
try {
productReader.readBandRasterData(
band, rectangle.x, rectangle.y, rectangle.width, rectangle.height, dataBuffer, pm);
targetTile.setRawSamples(dataBuffer);
} catch (IOException e) {
throw new OperatorException(e);
}
}
/**
* Called by the framework in order to compute the stack of tiles for the given target bands.
*
* <p>The default implementation throws a runtime exception with the message "not implemented".
*
* @param targetTiles The current tiles to be computed for each target band.
* @param targetRectangle The area in pixel coordinates to be computed (same for all rasters in
* <code>targetRasters</code>).
* @param pm A progress monitor which should be used to determine computation cancelation
* requests.
* @throws OperatorException if an error occurs during computation of the target rasters.
*/
@Override
public void computeTileStack(
Map<Band, Tile> targetTiles, Rectangle targetRectangle, ProgressMonitor pm)
throws OperatorException {
final int x0 = targetRectangle.x;
final int y0 = targetRectangle.y;
final int w = targetRectangle.width;
final int h = targetRectangle.height;
// System.out.println("x0 = " + x0 + ", y0 = " + y0 + ", w = " + w + ", h = " + h);
double[] tileOverlapPercentage = {0.0, 0.0};
try {
if (!isElevationModelAvailable) {
getElevationModel();
}
computeTileOverlapPercentage(x0, y0, w, h, tileOverlapPercentage);
// System.out.println("x0 = " + x0 + ", y0 = " + y0 + ", w = " + w + ", h = " + h +
// ", tileOverlapPercentageMin = " + tileOverlapPercentage[0] +
// ", tileOverlapPercentageMax = " + tileOverlapPercentage[1]);
} catch (Exception e) {
throw new OperatorException(e);
}
final Tile latTile = targetTiles.get(targetProduct.getBand(LATITUDE_BAND_NAME));
final Tile lonTile = targetTiles.get(targetProduct.getBand(LONGITUDE_BAND_NAME));
final ProductData latData = latTile.getDataBuffer();
final ProductData lonData = lonTile.getDataBuffer();
final double[][] latArray = new double[h][w];
final double[][] lonArray = new double[h][w];
for (int r = 0; r < h; r++) {
Arrays.fill(latArray[r], noDataValue);
Arrays.fill(lonArray[r], noDataValue);
}
final int ymin = Math.max(y0 - (int) (tileSize * tileOverlapPercentage[1]), 0);
final int ymax = y0 + h + (int) (tileSize * Math.abs(tileOverlapPercentage[0]));
final int xmax = x0 + w;
final PositionData posData = new PositionData();
final GeoPos geoPos = new GeoPos();
try {
if (reGridMethod) {
final double[] latLonMinMax = new double[4];
computeImageGeoBoundary(x0, xmax, ymin, ymax, latLonMinMax);
final double latMin = latLonMinMax[0];
final double latMax = latLonMinMax[1];
final double lonMin = latLonMinMax[2];
final double lonMax = latLonMinMax[3];
final int nLat = (int) ((latMax - latMin) / delLat) + 1;
final int nLon = (int) ((lonMax - lonMin) / delLon) + 1;
final double[][] tileDEM = new double[nLat + 1][nLon + 1];
double alt;
for (int i = 0; i < nLat; i++) {
final double lat = latMin + i * delLat;
for (int j = 0; j < nLon; j++) {
double lon = lonMin + j * delLon;
if (lon >= 180.0) {
lon -= 360.0;
}
geoPos.setLocation(lat, lon);
alt = dem.getElevation(geoPos);
if (alt == demNoDataValue) {
continue;
}
tileDEM[i][j] = alt;
if (!getPosition(lat, lon, alt, x0, y0, w, h, posData)) {
continue;
}
final int ri = (int) Math.round(posData.rangeIndex);
final int ai = (int) Math.round(posData.azimuthIndex);
if (ri < x0 || ri >= x0 + w || ai < y0 || ai >= y0 + h) {
continue;
}
latArray[ai - y0][ri - x0] = lat;
lonArray[ai - y0][ri - x0] = lon;
}
}
} else {
final double[][] localDEM = new double[ymax - ymin + 2][w + 2];
final TileGeoreferencing tileGeoRef =
new TileGeoreferencing(sourceProduct, x0, ymin, w, ymax - ymin);
final boolean valid =
DEMFactory.getLocalDEM(
dem,
demNoDataValue,
demResamplingMethod,
tileGeoRef,
x0,
ymin,
w,
ymax - ymin,
sourceProduct,
true,
localDEM);
if (!valid) {
return;
}
for (int y = ymin; y < ymax; y++) {
final int yy = y - ymin;
for (int x = x0; x < xmax; x++) {
final int xx = x - x0;
double alt = localDEM[yy + 1][xx + 1];
if (alt == demNoDataValue) {
continue;
}
tileGeoRef.getGeoPos(x, y, geoPos);
if (!geoPos.isValid()) {
continue;
}
double lat = geoPos.lat;
double lon = geoPos.lon;
if (lon >= 180.0) {
lon -= 360.0;
}
if (orbitMethod) {
double[] latlon = jOrbit.lp2ell(new Point(x + 0.5, y + 0.5), meta);
lat = latlon[0] * Constants.RTOD;
lon = latlon[1] * Constants.RTOD;
alt = dem.getElevation(new GeoPos(lat, lon));
}
if (!getPosition(lat, lon, alt, x0, y0, w, h, posData)) {
continue;
}
final int ri = (int) Math.round(posData.rangeIndex);
final int ai = (int) Math.round(posData.azimuthIndex);
if (ri < x0 || ri >= x0 + w || ai < y0 || ai >= y0 + h) {
continue;
}
latArray[ai - y0][ri - x0] = lat;
lonArray[ai - y0][ri - x0] = lon;
}
}
}
// todo should replace the following code with Delaunay interpolation
final TileIndex trgIndex = new TileIndex(latTile);
for (int y = y0; y < y0 + h; y++) {
final int yy = y - y0;
trgIndex.calculateStride(y);
for (int x = x0; x < x0 + w; x++) {
final int xx = x - x0;
final int index = trgIndex.getIndex(x);
if (latArray[yy][xx] == noDataValue) {
latData.setElemDoubleAt(index, fillHole(xx, yy, latArray));
} else {
latData.setElemDoubleAt(index, latArray[yy][xx]);
}
if (lonArray[yy][xx] == noDataValue) {
lonData.setElemDoubleAt(index, fillHole(xx, yy, lonArray));
} else {
lonData.setElemDoubleAt(index, lonArray[yy][xx]);
}
}
}
} catch (Throwable e) {
OperatorUtils.catchOperatorException(getId(), e);
}
}
/**
* Called by the framework in order to compute a tile for the given target band.
*
* <p>The default implementation throws a runtime exception with the message "not implemented".
*
* @param targetBand The target band.
* @param targetTile The current tile associated with the target band to be computed.
* @param pm A progress monitor which should be used to determine computation cancelation
* requests.
* @throws OperatorException If an error occurs during computation of the target raster.
*/
@Override
public void computeTile(Band targetBand, Tile targetTile, ProgressMonitor pm)
throws OperatorException {
try {
final Band sourceBand = sourceProduct.getBand(targetBand.getName());
final Tile srcTile = getSourceTile(sourceBand, targetTile.getRectangle());
final Stx stx = sourceBand.getStx();
double origMin = stx.getMinimum();
double origMax = stx.getMaximum();
ScalingType scaling = verifyScaling(targetScaling, dataType);
final double newMin = getMin(dataType);
final double newMax = getMax(dataType);
final double newRange = newMax - newMin;
if (origMax <= newMax
&& origMin >= newMin
&& sourceBand.getDataType() < ProductData.TYPE_FLOAT32) scaling = ScalingType.NONE;
final ProductData srcData = srcTile.getRawSamples();
final ProductData dstData = targetTile.getRawSamples();
final double srcNoDataValue = sourceBand.getNoDataValue();
final double destNoDataValue = targetBand.getNoDataValue();
if (scaling == ScalingType.LINEAR_PEAK_CLIPPED) {
final Histogram histogram = new Histogram(stx.getHistogramBins(), origMin, origMax);
final int[] bitCounts = histogram.getBinCounts();
double rightPct = 0.025;
for (int i = bitCounts.length - 1; i > 0; --i) {
if (bitCounts[i] > 10) {
rightPct = i / (double) bitCounts.length;
break;
}
}
final Range autoStretchRange = histogram.findRange(0.025, rightPct);
origMin = autoStretchRange.getMin();
origMax = autoStretchRange.getMax();
} else if (scaling == ScalingType.LINEAR_CLIPPED) {
final Histogram histogram = new Histogram(stx.getHistogramBins(), origMin, origMax);
final Range autoStretchRange = histogram.findRangeFor95Percent();
origMin = autoStretchRange.getMin();
origMax = autoStretchRange.getMax();
}
final double origRange = origMax - origMin;
final int numElem = dstData.getNumElems();
double srcValue;
for (int i = 0; i < numElem; ++i) {
srcValue = srcData.getElemDoubleAt(i);
if (srcValue == srcNoDataValue) {
dstData.setElemDoubleAt(i, destNoDataValue);
} else {
if (scaling == ScalingType.NONE) dstData.setElemDoubleAt(i, srcValue);
else if (scaling == ScalingType.TRUNC)
dstData.setElemDoubleAt(i, truncate(srcValue, newMin, newMax));
else if (scaling == ScalingType.LOGARITHMIC)
dstData.setElemDoubleAt(i, logScale(srcValue, origMin, newMin, origRange, newRange));
else {
if (srcValue > origMax) srcValue = origMax;
if (srcValue < origMin) srcValue = origMin;
dstData.setElemDoubleAt(i, scale(srcValue, origMin, newMin, origRange, newRange));
}
}
}
targetTile.setRawSamples(dstData);
} catch (Exception e) {
throw new OperatorException(e.getMessage());
}
}