How do I create a BufferedImage from array containing pixels?

Question

I get the pixels from BufferedImage using the method getRGB(). The pixels are stored in array called data[]. After some manipulation o

Answer 1

I get the pixels from the BufferedImage using the method getRGB(). The pixels are stored in array called data[].

Note that this can possibly be terribly slow. If your BufferedImage supports it, you may want to instead access the underlying int[] and directly copy/read the pixels from there.

For example, to fastly copy your data[] into the underlying int[] of a new BufferedImage:

BufferedImage bi = new BufferedImage( w, h, BufferedImage.TYPE_INT_ARGB );
final int[] a = ( (DataBufferInt) res.getRaster().getDataBuffer() ).getData();
System.arraycopy(data, 0, a, 0, data.length);

Of course you want to make sure that your data[] contains pixels in the same representation as your BufferedImage (ARGB in this example).