|2.1 Please describe the proposed Specification:
The Java Advanced Imaging API is a standard extension to the Java
platform, and is currently in public release at version 1.0. The Java
Advanced Imaging API allows the implementation of applications which
perform complex, high-performance digital imaging operations.
This JSR proposes the revision of the Java Advanced Imaging API 1.0
specification to version 1.1. The purpose of this revision is to add
functionality which has been requested by customers, revise existing
functionality in the light of customer feedback, and improve the
interoperability of the Java Advanced Imaging API with other Java
standard extensions (e.g., Java 3D).
|2.2 What is the target Java platform? (i.e., desktop, server, personal,
embedded, card, etc.)
Desktop and server.
|2.3 What need of the Java community will be addressed by the proposed
This revision will provide new imaging capabilities requested by
customers beyond those of the first release.
|2.4 Why isn't this need met by existing specifications?
The Java Advanced Imaging API is the current standard for
high-performance digital imaging on the Java platform.
|2.5 Please give a short description of the
underlying technology or technologies:
In the 1.1 revision, the following functional areas will be
- Volumetric imaging. True three-dimensional images and data
structures will be added to the API. A standard mechinism for
implementing operators for processing three-dimensional images will be
defined. A number of sample operators will be specified and included as
part of the core functionality.
- Image analysis. Image analysis is a subset of the discipline
generally known as image understanding, machine vision,
or pattern recognition. Image analysis provides the
fundamental framework for extracting features of interest from an
image, creating data structures to describe those features, and
operating on those data structures to extract meaningful information.
It excludes the higher-level processes which are used for formulating
an overall synthesis of image content based on the feature information
The 1.1 specification will standardize a framework for the
development of image analysis prototypes and applications, allowing
workers in this area to count on a standard set of concepts,
terminology, and features. Developing a more detailed description of
the work to be done in this area will be part of the architectural
- Interoperabilty between the Java Advanced Imaging API and the
Java 3D API. Although the 1.0 API was designed with interoperability
with Java 2D and Java 3D in mind, the integration of the Java Advanced
Imaging API and the Java 3D API is incomplete. In the 1.1 API, the
necessary architectural concepts and operators will be introduced to
allow Java 3D and the Java Advanced Imaging API to smoothly
In particular, it is assumed that the Java Advanced Imaging API will
most often be used as a 'back-end' engine by Java 3D to process an image
data set for inclusion in a Java 3D scene graph. Joint work between the
Java Advanced Imaging API and Java 3D API teams will define the necessary
- Enhanced Network imaging. The 1.0 API provides for
distributed processing of image data sets and operators anywhere on the
network. In the 1.1 API, these capabilities will be enhanced to include
the ability to more easily utilize additional compute resources and to
define arbitrary wire protocols and compression techniques for the
exchange of image tiles. These additions will also ease the
implementation requirements for the input/output of certain image file
formats. This work will be carried out in close coordination with the
image file i/o standard extension work.
- New image operator specifications. New image operators. The
core image operator functionality in the 1.0 API was chosen to address
the most common and widely useful methods. In the 1.1 API, additional
operators will be added to the core and some previous operators modified
in light of the feedback we have received from customers.
- Core modifications. Some aspects of the 1.0 API core
architecture may need to be modified in light of the new 1.1
functionality. Feedback from customers has also indicated some
desirable additions to the architecture which will enhance potential
performance and ease the implementation of new operators by application
developers and third parties. Backward compatibility of
1.1 with 1.0 is a major goal; imcompatible changes will be made only
when their advantages are overwhelming.
This JSR specifically excludes modifications to areas of the
architecture not named above.
|2.6 Is there a proposed package name for the
The Java Advanced Imaging 1.0 API uses the package name
javax.media.jai. The proposed 1.1 revision will lie entirely
within this package tree.
|2.7 Does the proposed specification have any dependencies on specific
operating systems, CPUs, or I/O devices that you know of?
The 1.1 specification has no software or hardware dependencies.
|2.8 Are there any security issues that cannot be
addressed by the current security model?
|2.9 Are there any internationalization or localization issues?
There are no I18N issues. The localization strategy has not yet been determined.
|2.10 Are there any existing specifications
that might be rendered obsolete, deprecated, or in need of revision as a
result of this work?
It is anticipated that this revision will be done in close cooperation
with the teams for the Java 3D API and the proposed Image File I/O
standard extension (currently in the specification process). Any
necessary revisions of those APIs to increase interoperability will be
negotiated directly with the teams.
It is possible that the revisions to the Java Advanced Imaging API
may make revisions in the Java 2D API desirable; any such revisions will
be negotiated with the Java 2D API team in the proper timeframe.