My students had some success with DStretch, as Dennis recommended:
https://www.dstretch.com/
It won’t help with recovering color, but it might help with seeing the image.
Best,
Tim

> On Oct 14, 2021, at 10:24 PM, Denis Gojak <[log in to unmask]> wrote:
> 
> 
> Hi Susan
> I had some luck in enhancing faded markings on ceramic and other
> surfaces with a phone app aimed mainly at looking at degraded rock art
> pigments in poor light conditions - BinaryEarth - Rock Art Enhancer
> [1] - for Android.  IDStretch, which I've not tried, is a similar
> app for IPhones.  
> This was to improve legibility, not to render the original design as
> say a complete image.  In my case, because the surfaces were curved
> and never evenly lit, it was a process of trying to get the best
> resolution of a small part of one segment before moving on to the next
> bit of the image and compiling it in my head.  It works by altering
> spectrum characteristics, so not sure you'd be able to recover a
> 'true' colour.
> Because its an app it is easy to play with, and more experienced users
> may have a whole bag of tricks to get better results from it.
> cheers
> denis
> 
> 	- - - - - - - - - - - - - - - - - - - - 
> Denis Gojak 
> 
> 	PO Box 457
> Newtown NSW 2042
> Australia
> 
> 	e    [log in to unmask] [2]
> 
> 	m    0489 944 822 - private
>       0400 474 405 - work
> 
> 	 - - - - - - - - - - - - - - - - - - - - 
> 
> ----- Original Message -----
> From: "Susan Wlater" 
> To:
> Cc:
> Sent:Wed, 13 Oct 2021 15:36:05 -0700
> Subject:fugitive exposure
> 
> Hi All,
> 
> I have Chinese and English enameled wares that have surface designs
> that 
> have gone away.
> Does anyone know how to make the paints reappear?
> I have the ghosts/fugitives/shadows but was wondering if there's
> anything 
> that would expose the former colors.
> 
> Thanks as always,
> S. Walter 
> 
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