int dnbands = dest.getNumBands();
int destType = dest.getTransferType();
PixelAccessor d = new PixelAccessor(dest.getSampleModel(), null);
UnpackedImageData dimd = d.getPixels(dest,
destRect, //liney,
destType,
true);
double[][] dstdata = (double[][])dimd.data;
for ( int sindex = 0, db = 0; sindex < nSrcs; sindex++ ) {
UnpackedImageData simd =
colorModels[sindex] instanceof IndexColorModel ?
pas[sindex].getComponents(sources[sindex],
destRect,
sources[sindex].getSampleModel().getTransferType()) :
pas[sindex].getPixels(sources[sindex],