JPEG artifacts detection

[klo uo]

Hi,

I was wondering if it's possible by using scikits-image to detect if
arbitrary image suffers from compression artifacts.
I mean artifacts in common sense, like saving original image in 80
quality JPEG is fine, but reencoding it over and over again, possibly
resizing etc is something I would like to detect - visible color
distorsion, edge noise, blockness...

Is there efficient method that scikits-image can provide

Thanks

[klo uo]

Of course, I mean without looking at the image or intermediate plots,
but fully automated detection within some accuracy

[klo uo]

For reference: http://stackoverflow.com/questions/11332590/jpeg-artifacts-detection

[Stéfan van der Walt]

On Tue, Jul 3, 2012 at 5:56 PM, klo uo <klo...@gmail.com> wrote:
> I was wondering if it's possible by using scikits-image to detect if
> arbitrary image suffers from compression artifacts.

The easiest may be to load the image, then save it again as JPG. If
the image size remains the same, you probably had a JPG to start with.

Stéfan