What does it stand for?
JBIG2 stands for Joint Bi-level Image Experts Group.
What is the difference between JBIG and JBIG2?
JBIG2 is a more advanced version of JBIG, offering improved compression efficiency, broader image support, and more improved features including progressive transmission and lossy compression. JBIG is also mainly used for bi-level images whereas this format supports grayscale and colour images, in addition to bi-level.
How does JBIG2 compress data?
It achieves data compression by using symbol substitution. Additionally, it encodes the image data compactly using arithmetic coding. Overall, it focuses on identifying and encoding repetitive elements in bi-level images to achieve high compression ratios.
How do I use this image format?
JBIG2 is mainly used for lossless compression of bi-level images, resulting in smaller file sizes without sacrificing image quality. It is often used for compressing scanned documents within PDF files, optimising efficient storage and transmission while maintaining image quality.
How is JBIG2 Compression Used?
It is also widely used in document management systems for organisations handling large amounts of scanned paperwork. It is also used as a tool for preserving historical documents and manuscripts in digital formats.
Other common use cases can include:
- Reducing size of scanned documents in PDF workflows (lossless JBIG2 encoding via tools like OCRmyPDF)
- Faster transmission and storage of bi-level (black-and-white) images compared to older fax/G4 standards
- Embedding JBIG2-encoded images in document viewer/SDKs (for render/decode in .NET, Java etc.)
- Archiving of documents (text, line art, halftone content) using JBIG2 to achieve much smaller files with acceptable quality
- Multipage document compression using shared symbol dictionaries and pattern matching to exploit repetition across pages
You can read this article to learn how JBig2 is used to display images on a PDF file. You can also learn more about this compression standard on the JPEG website.
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.
