Why do SGI Images cause issues for Java Developers?
ImageIO cannot read SGI file types by default so existing Java Applications will not work with them. If you have an existing Java Application using ImageIO you will find it cannot process these images.
In this post, I will cover how to upgrade ImageIO to support SGI files so existing Java Applications which use ImageIO will work (often without having to make any code changes) and how to read SGI files in JDeli directly.
What options are there for reading SGI files in Java?
Java does not read SGI images by default however JDeli offers pure Java support for SGI files and can be added as an ImageIO plugin, which we will be using for this tutorial.
If you are looking for a free solution, there is SGI support in the Twelve Monkeys ImageIO plugin. In this article we will be using our JDeli pure Java library to read SGI files.
How to upgrade ImageIO to read SGI files
It’s actually very simple and can be done without rewriting your existing code!
For example, the code below does not work with ImageIO for SGI images
// Read SGI image into Java with ImageIO
BufferedImage bufferedImage = ImageIO.read(new File("ImageFile.sgi"));
Steps to fix with JDeli:
- Download the JDeli trial jar with our ImageIO plugin
- Follow the support documentation to install
How to read an SGI image in Java with JDeli
- Add JDeli to your class or module path. (download the trial jar).
- Create a File handle, InputStream pointing to the raw SGI image. You can also use a byte[] containing the image data.
- Read the SGI image into a BufferedImage
and the Java code to read SGI with JDeli…
File file = new File("/path/to/image.sgi"));
BufferedImage image = JDeli.read(file);
Other useful SGI links
- JDeli SGI support
- Related articles on our support site.
- What is SGI?
Are you a Java Developer working with Image files?
// Read an image
BufferedImage bufferedImage = JDeli.read(avifImageFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(dicomImageFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(heicImageFile);
// Write an image
JDeli.write(bufferedImage, "heic", outputStreamOrFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(jpegImageFile);
// Write an image
JDeli.write(bufferedImage, "jpeg", outputStreamOrFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(jpeg2000ImageFile);
// Write an image
JDeli.write(bufferedImage, "jpx", outputStreamOrFile);
// Write an image
JDeli.write(bufferedImage, "pdf", outputStreamOrFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(pngImageFile);
// Write an image
JDeli.write(bufferedImage, "png", outputStreamOrFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(tiffImageFile);
// Write an image
JDeli.write(bufferedImage, "tiff", outputStreamOrFile);
// Read an image
BufferedImage bufferedImage = JDeli.read(webpImageFile);
// Write an image
JDeli.write(bufferedImage, "webp", outputStreamOrFile);
What is JDeli?
JDeli is a commercial Java Image library that is used to read, write, convert, manipulate and process many different image formats.
Why use JDeli?
To handle many well known formats such as JPEG, PNG, TIFF as well as newer formats like AVIF, HEIC and JPEG XL in java with no calls to any external system or third party library.
What licenses are available?
We have 3 licenses available:
Server for on premises and cloud servers, Distribution for use in a named end user applications, and Custom for more demanding requirements.
How does JDeli compare?
We work hard to make sure JDeli performance is better than or similar to other java image libraries. Check out our benchmarks to see just how well JDeli performs.
As ImageIO is plugin based, I have written a plugin for the SGI format, that allows ImageIO to read SGI images as easy as:
BufferedImage image = ImageIO.read(sgiFile);