private void copyBand(String name) {
Band sourceBand = getSourceProduct().getBand(name);
Band targetBand = ProductUtils.copyBand(name, getSourceProduct(), getTargetProduct());
targetBand.setSourceImage(sourceBand.getSourceImage());
maybeCopyFlagCoding(sourceBand, targetBand);
maybeCopyIndexCoding(sourceBand, targetBand);
}
/** Calls the given handler for all frames of the product the operator executor product. */
public Object execute(Handler handler) throws Exception {
int parallelism = Runtime.getRuntime().availableProcessors();
System.out.println("parallelism = " + parallelism);
JAI.getDefaultInstance().getTileScheduler().setParallelism(parallelism);
Dimension frameSize = getFrameSize();
int numXFrames = 1 + (product.getSceneRasterWidth() - 1) / frameSize.width;
int numYFrames = 1 + (product.getSceneRasterHeight() - 1) / frameSize.height;
Rectangle sceneRegion =
new Rectangle(product.getSceneRasterWidth(), product.getSceneRasterHeight());
for (int frameY = 0; frameY < numYFrames; frameY++) {
for (int frameX = 0; frameX < numXFrames; frameX++) {
Rectangle frameRegion =
new Rectangle(
frameX * frameSize.width,
frameY * frameSize.height,
frameSize.width,
frameSize.height)
.intersection(sceneRegion);
int numBands = product.getNumBands();
Band[] bandArray = new Band[numBands];
ProductData[] dataArray = new ProductData[numBands];
for (int b = 0; b < numBands; b++) {
Band band = product.getBandAt(b);
PlanarImage planarImage = band.getSourceImage();
Point[] indices = planarImage.getTileIndices(null);
System.out.println("indices = " + indices.length);
TileRequest tileRequest = planarImage.queueTiles(indices);
Raster raster = planarImage.getData();
System.out.println("raster = " + raster);
ProductData data = band.createCompatibleRasterData(frameRegion.width, frameRegion.height);
band.readRasterData(
frameRegion.x, frameRegion.y, frameRegion.width, frameRegion.height, data);
bandArray[b] = band;
dataArray[b] = data;
}
MyFrame frame = new MyFrame(frameRegion, bandArray, dataArray);
handler.frameComputed(frame);
}
}
return new Object();
}
/**
* This method provides a real tie point grid from a 'tie point band'.
*
* @param band - the 'tie point band'
* @return TiePointGrid
*/
public static TiePointGrid getTpgFromBand(Band band) {
final DataBuffer dataBuffer = band.getSourceImage().getData().getDataBuffer();
float[] tpgData = new float[dataBuffer.getSize()];
for (int i = 0; i < dataBuffer.getSize(); i++) {
tpgData[i] = dataBuffer.getElemFloat(i);
}
return new TiePointGrid(
band.getName(),
band.getSceneRasterWidth(),
band.getSceneRasterHeight(),
0.0f,
0.0f,
1.0f,
1.0f,
tpgData);
}
/**
* This method downscales a band by a given factor
*
* @param inputBand - the input band
* @param scalingFactor - the scaling factor
* @return Band - the downscaled band
*/
public static Band downscaleBand(Band inputBand, float scalingFactor) {
final RenderedImage sourceImage = inputBand.getSourceImage();
final RenderedOp downscaledImage =
ScaleDescriptor.create(
sourceImage,
1.0f / scalingFactor,
1.0f / scalingFactor,
0.0f,
0.0f,
Interpolation.getInstance(Interpolation.INTERP_NEAREST),
null);
Band downscaledBand =
new Band(
inputBand.getName(), inputBand.getDataType(),
downscaledImage.getWidth(), downscaledImage.getHeight());
downscaledBand.setSourceImage(downscaledImage);
return downscaledBand;
}
/**
* This method provides a rescaled tie point grid from a 'tie point band'.
*
* @param band - the 'tie point band'
* @param rescaledWidth - width of the rescaled TPG
* @param rescaledHeight - height of the rescaled TPG
* @return TiePointGrid
*/
public static TiePointGrid getRescaledTpgFromBand(
Band band, int rescaledWidth, int rescaledHeight) {
final DataBuffer dataBuffer = band.getSourceImage().getData().getDataBuffer();
float[] tpgData = new float[rescaledWidth * rescaledHeight];
if (rescaledWidth * rescaledHeight > band.getSceneRasterWidth() * band.getSceneRasterHeight()) {
throw new OperatorException("Cannot create TPG - width*height too large.");
}
int tpgIndex = 0;
for (int j = 0; j < rescaledHeight; j++) {
for (int i = 0; i < rescaledWidth; i++) {
tpgData[rescaledWidth * j + i] = dataBuffer.getElemFloat(tpgIndex);
tpgIndex++;
}
for (int i = rescaledWidth; i < band.getSceneRasterWidth(); i++) {
tpgIndex++;
}
}
return new TiePointGrid(
band.getName(), rescaledWidth, rescaledHeight, 0.0f, 0.0f, 1.0f, 1.0f, tpgData);
}
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);
}