/** Transform the colormap according to the rescaling parameters. */
protected void transformColormap(byte[][] colormap) {
byte byteTable[][] = lut.getByteData();
for (int b = 0; b < 3; b++) {
byte[] map = colormap[b];
byte[] luTable = byteTable[b >= byteTable.length ? 0 : b];
int mapSize = map.length;
for (int i = 0; i < mapSize; i++) {
map[i] = luTable[(map[i] & 0xFF)];
}
}
}
private void computeRectByte(Raster[] sources, WritableRaster dest, Rectangle destRect) {
lut.lookup(sources[0], dest, destRect);
}