/**
* This method copies selected tie point grids to a rescaled target product
*
* @param sourceProduct - the source product
* @param targetProduct - the target product
* @param xScalingFactor - scaling factor in x-direction
* @param yScalingFactor - scaling factor in y-direction
*/
public static void copyRescaledTiePointGrids(
Product sourceProduct, Product targetProduct, int xScalingFactor, int yScalingFactor) {
// Add tie point grids for sun/view zenith/azimuths. Get data from AATSR bands.
final Band szaBand =
sourceProduct.getBand("sun_elev_nadir_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band saaBand =
sourceProduct.getBand("sun_azimuth_nadir_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band latitudeBand =
sourceProduct.getBand("latitude_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band longitudeBand =
sourceProduct.getBand("longitude_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final Band altitudeBand =
sourceProduct.getBand("altitude_" + SynergyConstants.INPUT_BANDS_SUFFIX_AATSR);
final TiePointGrid szaTpg = getRescaledTpgFromBand(szaBand, xScalingFactor, yScalingFactor);
targetProduct.addTiePointGrid(szaTpg);
final TiePointGrid saaTpg = getRescaledTpgFromBand(saaBand, xScalingFactor, yScalingFactor);
targetProduct.addTiePointGrid(saaTpg);
final TiePointGrid latTpg =
getRescaledTpgFromBand(latitudeBand, xScalingFactor, yScalingFactor);
targetProduct.addTiePointGrid(latTpg);
final TiePointGrid lonTpg =
getRescaledTpgFromBand(longitudeBand, xScalingFactor, yScalingFactor);
targetProduct.addTiePointGrid(lonTpg);
final TiePointGrid altTpg =
getRescaledTpgFromBand(altitudeBand, xScalingFactor, yScalingFactor);
targetProduct.addTiePointGrid(altTpg);
}
protected void addTiePointGridsToProduct(final Product product) {
final GeoCoding geoCoding = getSourceProduct().getGeoCoding();
final String latGridName;
final String lonGridName;
if (geoCoding instanceof TiePointGeoCoding) {
final TiePointGeoCoding tiePointGeoCoding = (TiePointGeoCoding) geoCoding;
final TiePointGrid latGrid = tiePointGeoCoding.getLatGrid();
final TiePointGrid lonGrid = tiePointGeoCoding.getLonGrid();
latGridName = latGrid.getName();
lonGridName = lonGrid.getName();
} else {
latGridName = null;
lonGridName = null;
}
for (int i = 0; i < getSourceProduct().getNumTiePointGrids(); i++) {
final TiePointGrid sourceTiePointGrid = getSourceProduct().getTiePointGridAt(i);
final String gridName = sourceTiePointGrid.getName();
if (isNodeAccepted(gridName)
|| (gridName.equals(latGridName) || gridName.equals(lonGridName))) {
final TiePointGrid tiePointGrid =
TiePointGrid.createSubset(sourceTiePointGrid, getSubsetDef());
if (isFullScene(getSubsetDef()) && sourceTiePointGrid.isStxSet()) {
copyStx(sourceTiePointGrid, tiePointGrid);
}
product.addTiePointGrid(tiePointGrid);
copyImageInfo(sourceTiePointGrid, tiePointGrid);
}
}
}
private static Product createProduct() throws Exception {
Product product = new Product("p", "t", 32, 256);
final TiePointGrid lat =
new TiePointGrid("lat", 2, 2, 0f, 0f, 32f, 256f, new float[] {+40f, +40f, -40f, -40f});
final TiePointGrid lon =
new TiePointGrid("lon", 2, 2, 0f, 0f, 32f, 256f, new float[] {-80f, +80f, -80f, +80f});
product.addTiePointGrid(lat);
product.addTiePointGrid(lon);
product.setGeoCoding(new TiePointGeoCoding(lat, lon));
product.setPreferredTileSize(32, 16);
product.setStartTime(ProductData.UTC.parse("2003-01-01", "yyyy-MM-dd"));
product.setEndTime(ProductData.UTC.parse("2003-01-02", "yyyy-MM-dd"));
return product;
}
private static void addTpg(Product targetProduct, Band scaledBand, String name) {
DataBuffer dataBuffer;
float[] tpgData;
TiePointGrid tpg;
dataBuffer = scaledBand.getSourceImage().getData().getDataBuffer();
tpgData = new float[dataBuffer.getSize()];
for (int i = 0; i < dataBuffer.getSize(); i++) {
tpgData[i] = dataBuffer.getElemFloat(i);
}
tpg =
new TiePointGrid(
name,
scaledBand.getSceneRasterWidth(),
scaledBand.getSceneRasterHeight(),
0.0f,
0.0f,
1.0f,
1.0f,
tpgData);
targetProduct.addTiePointGrid(tpg);
}