java.lang.OutOfMemoryError processing large multi page PDF to TIFF about icafe

[dragon66]

@reecefenwick: yes, you could have a look at issue #23 which for animated GIF but there is a similar function inside TIFFTweaker.

TIFFWriter writer = new TIFFWriter();
List<IFD> ifds = new ArrayList<IFD>();
FileOutputStream fout = new FileOutputStream("NEW.tif");
RandomAccessOutputStream rout = new FileCacheRandomAccessOutputStream(fout);
int writeOffset = TIFFTweaker.prepareForWrite(rout);
// Grab BufferedImage one by one and write them
BufferedImage bi = aBufferedImage;//
writeOffset = TIFFTweaker.writePage(bi, rout, ifds, writeOffset, writer);
// Keep writing until done, then finish up
TIFFTweaker.finishWrite(rout, ifds);
rout.close();

With this approach, you can set image parameters to TIFFWriter instance to control what kind of TIFF image you want to write - Full color, indexed, black and white etc.. You can even set different color types for different pages of the output multipage TIFF image.

[reecefenwick]

Thanks @dragon66 ! Solved my memory problems with your suggestion and it's very stable now