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Editorial Team
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Asked: 2026-05-23T04:10:11+00:00

I am thinking about embedding arbitrary integer array data into an image file. I

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I am thinking about embedding arbitrary integer array data into an image file.

I am curious to see what my data looks like 🙂

Here are the questions which come to mind:

  • What are the permissible integer ranges for conversion? (My integers are between 0 and Integer.MAX_VALUE).
    • How do I need to handle 0 to Integer.MAX_VALUE to 8-bit ARGB integer ranges?
  • Which lossless image format (png?)
  • Does such a library already exist?
  • I need to decode the data too. 🙂
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1 Answer

  1. Editorial Team

    It’s rather simple, since when you deal with a BufferedImage in Java, each pixel is stored (or at least, accessed) as an int natively. The full range of values is available, if your image is ARGB (32-bits). Any lossless image format will do.

    int[] array = new int[100];
    final BufferedImage im = new BufferedImage(array.length, 1, BufferedImage.TYPE_INT_ARGB);
    for (int i = 0; i < array.length; i++)
        im.setRGB(i, 0, array[i]); // NOTE: this is probably optimizable
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