Java^TM Advanced Imaging Image I/O Tools

JAI Image I/O Tools provides reader, writer, and stream plug-ins for the Java^TM Image I/O Framework and Image I/O-based read and write operations for Java^TM Advanced Imaging. Reader-writer plug-ins are supplied for the BMP, JPEG, JPEG 2000, PNG, PNM, Raw, TIFF, and WBMP image formats; a writer plug-in is supplied for the GIF image format (a GIF reader plug-in is supplied de facto by J2SE). The supplied streams and associated service providers use the New I/O APIs. Please refer to the JAI Image I/O Tools API documentation for more information.

Limitations

Some reader/writer plug-ins have known limitations which are described in this section.

BMP

Can decode bmp images with version 3-5. Can encode only version 3 images.

JPEG

Cannot decode or encode progressive JPEG images: the J2SE core JPEG reader and writer plug-ins should be used respectively to read or write progressive JPEG images.
Neither the reader nor writer plug-in supports metadata: the J2SE core JPEG plug-ins should be used for this purpose. Support for metadata may be ascertained by querying the appropriate methods of the ImageReaderSpi or ImageWriterSpi which provides the reader or writer. These ServiceProviders are themselves obtained from the IIORegistry.

JPEG 2000

Supports bilevel images, multi-band images with a type of byte/ushort/short (including gray-scale, RGB, RGBA, and GA (gray-alpha) images), and color-indexed images with 256 colors.

PNG

Does not support data having 2 or 4 bits per sample. The core J2SE PNG plug-ins should be used for these bit depths.

PNM

Supports bilevel, color-indexed (writer only), grayscale, and RGB images.

Raw

Supports any data defined by ComponentSampleModel, SinglePixelPackedSampleModel and bilevel MultiPixelPackedSampleModel.

TIFF

The writer plug-in does not support old-style (TIFF 6.0) JPEG compression.

Installation

Please refer to the INSTALL-jai_imageio.html file.

Recent Changes

Please refer to the RELEASE-jai_imageio.html file for the current release.

Issues

The list of bugs and requests for enhancement (RFEs) for JAI Image I/O Tools is maintained in the community Bug Database. Search for bugs with category Java Advanced Imaging and keyword codec_imageio or codeclib.

Feedback

Comments may be submitted via the JAI feedback form or posted to the jai-interest or java-imageio-interest mailing lists. Users are encouraged to participate in these lists.

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JavaTM Advanced Imaging Image I/O Tools