JAI - How to convert PNG to TIFF

[Armin Gajda]

Hi,

JAI can be used to convert PNG images files to TIFF:


String source = "c:/tmp/1.png";
FileOutputStream out = new FileOutputStream ("c:/tmp/2.tiff");
RenderedOp src = JAI.create("fileload", source);
TIFFImageEncoder encoder = new TIFFImageEncoder (out, null);
encoder.encode (src);

1. I don't want to run it file based, so I was wondering how to pass the
source file as a stream.

2. A 15K PNG file is blown up to 2.5 MB TIFF. How can I use a compression?

thank you

Armin

 

[Armin Gajda]

Hi,

JAI can be used to convert PNG images files to TIFF:


String source = "c:/tmp/1.png";
FileOutputStream out = new FileOutputStream ("c:/tmp/2.tiff");
RenderedOp src = JAI.create("fileload", source);
TIFFImageEncoder encoder = new TIFFImageEncoder (out, null);
encoder.encode (src);

1. I don't want to run it file based, so I was wondering how to pass the
source file as a stream.

Just found out the magic word is 'stream' and works together with a
ByteArraySeekableStream.

But what about the compression?

 

[Thomas Weidenfeller]

1. I don't want to run it file based, so I was wondering how to pass the
source file as a stream.

http://java.sun.com/products/java-m.../jai1_0_1guide-unc/Acquisition.doc.html#74172