Image and Video Processing Libraries in Ptolemy II by ... - CiteSeerX
Image and Video Processing Libraries in Ptolemy II by ... - CiteSeerX
Image and Video Processing Libraries in Ptolemy II by ... - CiteSeerX
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Chapter 3<br />
JAI Actor Library<br />
The follow<strong>in</strong>g actors are all dependent on the JAI API, which is why the actor<br />
names are all prefixed.<br />
3.1 File I/O<br />
One of the ma<strong>in</strong> reasons JAI was chosen to implement the image process<strong>in</strong>g<br />
platform was the ease that images could be loaded <strong>and</strong> saved <strong>in</strong> a variety of<br />
different file types.<br />
3.1.1 JAI<strong>Image</strong>Reader<br />
All file load<strong>in</strong>g, regardless of file type, <strong>in</strong> the platform is done <strong>in</strong> the JAI<strong>Image</strong>Reader<br />
actor. It has one parameter, FileOrURL, that po<strong>in</strong>ts to an appropriate<br />
image file. The follow<strong>in</strong>g file types are supported.<br />
Bitmap (BMP)<br />
The Bitmap file format was developed <strong>by</strong> Microsoft. It is commonly used on<br />
their operat<strong>in</strong>g systems (for example, the desktop background). Version 2 <strong>and</strong><br />
Version 3 bitmaps can be read with no problems. Version 4 bitmaps can be<br />
specified with an alpha value (which controls transparency) <strong>and</strong> a gamma value<br />
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