test.j2c used in web browser demo about openjph HOT 5 CLOSED

The test.j2c file employs with high-quality lossy compression. For lossless compression, the size would be around 471079. JPH is less efficient than J2K by a small amount, in the order of, I think, 5-7% (see the white paper), but it has significantly lower computational complexity.

I forgot what command line was used to obtain the lena image, but this command
../bin/ojph_compress -i lena.ppm -o test.j2c -num_decomps 5
should produce largely similar results. To obtain a lossless version of it, use
../bin/ojph_compress -i lena.ppm -o test.j2c -num_decomps 5 -reversible true

I agree that it can be useful to provide more usage examples than the two examples provided in README.MD; however, providing images is beyond the scope of the work. Images have their associated licences, and they should not be very large; perhaps you can help with providing images.

Cheers,
Aous.

from openjph.

I can help with images and will keep them small. How about a new folder at the root called /images that has the source images, j2c result images and a script to run ojph_compress with the right settings to generate the j2c result images?

from openjph.

This seems like a good idea. Please provide these images. I hope there are no licensing issues, and the images can be provided under the 2-clause BSD license.

Thank you Chris.

from openjph.

I have some pictures I own so will use those - no licensing issues :)

from openjph.

I extracted the RAW frames from some freely available DICOM images and converted them to J2C here:

https://github.com/chafey/openjphjs/tree/master/test/fixtures/j2c

Feel free to use them as you see fit. I don't know what license (if any) these were released under, but they were made available for the public to use

from openjph.