Dithering no longer seems to work under 1.4.2_03

Question

I am trying to convert a jpeg to a 1 bit per pixel Buffered image.
The current implementation is working fine under 1.3.1_05 but not under any of the 1.4.2 JVM's that I have tried. Any tips on what I am doing wrong?
Here is a snippet of the the code:
// input stream is from a jpeg file:
JPEGImageDecoder jpgDecoder = JPEGCodec.createJPEGDecoder(src);
// decompress to a AWT buffered image. this will be our source image in the color
// space of the original jpg.
BufferedImage srcImg = jpgDecoder.decodeAsBufferedImage();
// create an output buffered image in the color space that we need. in this case
// one bit binary.
BufferedImage destImage =null;
Graphics2D graphics=null;
int bufferedImageType = BufferedImage.TYPE_BYTE_BINARY;
// cols and rows are passed in as parameters
destImage = new BufferedImage(cols,rows,bufferedImageType);
// create a Graphics2D context out of the Output buffered image and draw the
// source image to it. This will convert the color space for us. At least it does under 1.3.1
graphics=destImage.createGraphics();
// the following commented line has the effect of inverting the color for us.
// this would be nice except it seems to have the effect of hanging 1.3.1 JVM.
//graphics.setXORMode(Color.WHITE);
graphics.drawImage(srcImg,null,0,0);
// get the data buffer from the destImage and send it back to the caller
DataBufferByte dataBuffer = (DataBufferByte)destImage.getData().getDataBuffer();
return dataBuffer;
This works great under 1.3.1 The returned data buffer is merged with some other images and the result is a nicely dithered 1 bpp output image. (I am currently generating either tiff or png at 1bpp).
Under 1.4.2 it seems that instead of dithering I get some sort of thresholding that looks awfull. No attempt to emulate grayscale is made at all.
Has anyone encounterd this problem? I have looked through the forum but nothing similar seems to be posted.
If you need a more concrete example I can post a main that reads the jpg, converts it to 1bpp and saves it as a tiff.
Thanks
Richard Seabright.

Answer 1

I think this is 2D issue. Try to ask in 2D forum.