intervenidos

00:14 Apr 6, 2016 

To be honest, I wish I could have split the points, or rather give four points to each of you, Charles and Marcelo. In fact, I used 'manipulated' and 'artist-intervened' in different parts of the text as both are absolutely appropriate.

23:44 Apr 5, 2016 

Though an explanation could be helpful, it's not as if evidence did not exist suggesting the appropriacy of literal options (véase p.ej., 'Fotograbados e intervención'); indeed, in this context of (art) intervention----which appears to be broad in both languages----evidence would also suggest that 'manipulation' might be an appropriate rendering for 'manipulación.' In fact, it could get rather messy if certain literal renderings were not used in this context (see e.g., 'language origin transparency' in "Metaphor and Agency" [2014]), as the likelihood of multiple versions of quotations circulating simultaneously would almost certainly increase. In this context, a literal approach is probably the safest. Cheers from the Mariana islands :-)

22:15 Apr 5, 2016 

And NOT any kind of comment on the choice!

Airbrushing, blurring, erasing and retouching are all examples of image manipulation. They are often done by computer nowadays, but they can still be done by hand, as I imagine is probably the case here. And "intervención" could refer to something done to the image either before or after printing.
Intervention certainly is an art term, but it means interaction with a previous artwork or with a space or situation; it's a term primarily belonging to conceptual art. It can mean this in Spanish too, but it has a wider range of uses in Spanish, including the one in this text.
https://en.wikipedia.org/wiki/Art_intervention

13:39 Apr 5, 2016 

Since I have not been able to find any examples of this Uruguayan artist's "Memocopias" on line, I guess I will choose the translation that most resembles the original in Spanish. A huge thanks to all of you.

10:34 Apr 5, 2016 

I'm assuming that the words "borronea" and "desdibuja" are crucial to the interpretation here of "fotograbados intervenidos". After an initial read, I'm not sure if Charles' interesting link explains this or not!
I get the impression from the context provided here that this question might be less about generally retouching, manipulating or modifying and more specifically about some sort of blurring or erasing technique such as airbrushing.
But perhaps one of the above terms does indeed cover the effect?? However, I'd need to see this explained before venturing to post a wholehearted Agree with any of the suggestions so far.

Either way, this seems to me to be highly technical - requiring also knowledge of the "Memocopias tratadas con aerógrafo", with which this term is being compared.

19:16 Apr 4, 2016 

Touched up or modified?

A photoengraver may need to be able to use hand tools to touch up or modify the engraved image as a final.