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Aspose.Imaging  for Java
DJVU

Binarize DJVU images via Java

Build your own Java apps to Binarize DJVU image files using server-side APIs

How to Binarize DJVU Files Using Java

The invention of color film marked a significant milestone in the realm of photography. However, classical photography is inherently linked to black and white imagery. Despite the extensive technical capabilities of cameras to capture the full spectrum of colors, many individuals opt for monochrome, transforming their pictures into black and white. In such instances, a binarization function comes into play, converting all pixels into binary values: "0" for white and "1" for black. In other scenarios, this conversion isn’t driven by artistic choices but practical ones, like preparing black and white illustrations for printing in books or newspapers. Using the Java graphics library, you can designate a pixel brightness threshold. Pixels with brightness values below this threshold will become black, while those above it will become white. Alternatively, you can employ an adaptive binarization method that considers the pixel values in the surrounding area. This approach results in smoother transitions between color boundaries in the resulting black and white image. In order to Binarize DJVU files, we’ll use Aspose.Imaging for Java API which is a feature-rich, powerful and easy to use image manipulation and conversion API for Java platform. You can download its latest version directly from Maven and install it within your Maven-based project by adding the following configurations to the pom.xml.

Repository

<repository>
<id>AsposeJavaAPI</id>
<name>Aspose Java API</name>
<url>https://repository.aspose.com/repo/</url>
</repository>

Dependency

<dependency>
<groupId>com.aspose</groupId>
<artifactId>aspose-imaging</artifactId>
<version>version of aspose-imaging API</version>
<classifier>jdk16</classifier>
</dependency>

Steps to Binarize DJVU via Java

You need the aspose-imaging-version-jdk16.jar to try the following workflow in your own environment.

  • load DJVU files with Image.Load method;
  • binarize image;
  • save binarized image to disc in the supported by Aspose.Imaging format.

System Requirements

Aspose.Imaging for Java is supported on all major operating systems. Just make sure that you have the following prerequisites.

  • JDK 1.6 or higher is installed.
 

Binarize DJVU images - Java

 
  • About Aspose.Imaging for Java API

    Aspose.Imaging API is an image processing solution to create, modify, draw or convert images (photos) within applications. It offers: cross-platform Image processing, including but not limited to conversions between various image formats (including uniform multi-page or multi-frame image processing), modifications such as drawing, working with graphic primitives, transformations (resize, crop, flip&rotate, binarization, grayscale, adjust), advanced image manipulation features (filtering, dithering, masking, deskewing), and memory optimization strategies. It’s a standalone library and does not depend on any software for image operations. One can easily add high-performance image conversion features with native APIs within projects. These are 100% private on-premise APIs and images are processed at your servers.

    Binarize DJVU via Online App

    Binarize DJVU documents by visiting our Live Demos website The live demo has the following benefits

      No need to download or setup anything
      No need to write any code
      Just upload your DJVU files and hit "Binarize now" button
      Instantly get the download link for the resultant file

    DJVU What is DJVU File Format

    DjVu, pronounced as “déjà vu”, is a graphics file format intended for scanned documents and books especially those which contain the combination of text, drawings, images and photographs. It was developed by AT&T Labs. It uses multiple techniques like image layer separation of text and background images, progressive loading, arithmetic coding and lossy compression for bitonal images. Since DJVU file can contain compressed yet high-quality colour images, photographs, text, and drawings and can be saved in less space therefore, it's used on web as eBooks, manuals, newspapers, ancient documents, etc.

    Read More

    Other Supported Binarize Formats

    Using Java, you can easily Binarize different formats including:

    APNG (Animated Portable Network Graphics)
    BMP (Bitmap Picture)
    ICO (Windows icon)
    JPG (Joint Photographic Experts Group)
    JPEG (Joint Photographic Experts Group)
    DIB (Device Independent Bitmap)
    DICOM (Digital Imaging & Communications)
    DNG (Digital Camera Image)
    EMF (Enhanced Metafile Format)
    EMZ (Windows Compressed Enhanced Metafile)
    GIF (Graphical Interchange Format)
    JP2 (JPEG 2000)
    J2K (Wavelet Compressed Image)
    PNG (Portable Network Graphics)
    TIFF (Tagged Image Format)
    TIF (Tagged Image Format)
    WEBP (Raster Web Image)
    WMF (Microsoft Windows Metafile)
    WMZ (Compressed Windows Media Player Skin)
    TGA (Targa Graphic)
    SVG (Scalable Vector Graphics)
    EPS (Encapsulated PostScript Language)
    CDR (Vector Drawing Image)
    CMX (Corel Exchange Image)
    OTG (OpenDocument Standard)
    ODG (Apache OpenOffice Draw Format)