Image processing in Java

In this article I will introduce you to Java Image processing, explain why Java is a good fit and introduce our JDeli image processing library.

What is Image processing?

Image processing is the action of altering an image using an algorithm. Often this involves a kernel matrix. Image processing operations are frequently used to improve picture quality or expose details as well as just for fun.

Why use Java for Image processing?

Reason 1 ImageIO, plugins and third-party libraries such as JDeli allow Java to read and write a very wide range of Image file formats
Reason 2 Java provides a simple abstract BufferedImage class but also deep level access to pixels, rasters, colorspaces if needed
Reason 3 Graphics2D, kernels and Affine TranformOp allow a very wide range of operations to be applied to an Image.
Reason 4 Java is cross-platform, robust and well supported

Why use JDeli for Java Image processing?

JDeli simplifies image processing in Java and offers the following benefits:

• prevent heap related JVM crashes
• large selection of predefined Image processing operations
• custom() operation makes it easy to define new operations
• support for additional image formats such as Heic
• reduce output file size
• improve read/write performance
• create smaller files
• control over output
• support threading
• superior image scaling algorithms

Are there any other tutorials showing how to use JDeli to process images?

• How to resize images in Java
• Image Rotation in Java
• Image Scaling in Java
• Image Scaling options in Java

Why do developers choose JDeli over free alternatives?

1. Works with newer image formats such as AVIF, HEIC, JPEG XL, WEBP (AVIF next release) that are not supported in Java.
2. Better support than alternatives for JPEG, PNG, TIFF.
3. Process images up to 3x faster than ImageIO and other Java image libraries.
4. Prevent JVM crashes caused by native code in other image libraries such as ImageIO.
5. Image security as JDeli processes images on your servers with no calls to any external system or third party library.

// 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);