Using JPEG-XR for binary image compression?

[Sahil-5111998]

Hi,

I am using jxrlib for binary image compression, but it gives me a problem.
By binary image, I mean an image by 1bpp (1-bit depth).

I am not using the Java one, but I am using the one written in C++.
For that, I am using the following command:

JXREncApp -i Image3_3.bmp -o output.jxr -c 1

I am asking you a question because I cannot get any help. So if you have any idea about it, please let me know.

[melissalinkert]

@Sahil-5111998 : as far as I know, JxrEncApp and JxrDecApp will not support 1-bit images at all. These tools do not completely implement the JPEG-XR specification, despite usage instructions that suggest otherwise.

Opening the 1-bit BMP file in Windows Photos should allow you to save as .jxr, and the output file should still be 1-bit. JxrDecApp will not be able to read that though. You might try other applications listed here as well:

https://en.wikipedia.org/wiki/JPEG_XR#Software_support

but note that anything which relies upon jxrlib (e.g. ImageMagick) will have the same problems as using JxrEncApp/JxrDecApp directly.

We're very unlikely to add 1-bit image support here in the foreseeable future, but hopefully that helps a bit.