'If
you have contributed to a paper that is already published, can you use
the same title, abstract, and images for a poster presentation?'
Yes, provided you have permission from the other authors of that paper and provided the meeting abstract submission policies allow submission of a published paper. For example, having clarified these two issues, I have presented posters of papers that were under review or already accepted for publication.
'Does it depend on whether I wrote it in the first place?'
No, but the poster that you plan to present should retain the list of authors from the published paper as is, of course, with those authors' permission. On the poster, you could put an asterisk after your name with the explanation of the asterisk noting you as the poster presenter. Under no circumstances should the poster list only your name as the author.
'Do people rewrite this info or just use the info from the paper? … I'm guessing it's frowned upon to literally copy/paste the abstract, but I really doubt I could write a better version that says the exact same thing'.
Tending to stricter word limits, usually poster abstracts are shorter compared to those of journal papers so you may not be able to use the exact same abstract anyway. Remember though that if you end up re-writing some phrases or sentences to conform to a strict word limit, you should get approval of the re-worded abstract from all the other authors. Your poster should also indicate that it's based on a published paper by clearly referencing it, i.e., title, list of authors, journal (year, volume, issue, page numbers), on the poster itself.
https://www.quora.com/If-you-have-contributed-to-a-paper-that-is-already-published-can-you-use-the-same-title-abstract-and-images-for-a-poster-presentation/answer/Tirumalai-Kamala
Yes, provided you have permission from the other authors of that paper and provided the meeting abstract submission policies allow submission of a published paper. For example, having clarified these two issues, I have presented posters of papers that were under review or already accepted for publication.
'Does it depend on whether I wrote it in the first place?'
No, but the poster that you plan to present should retain the list of authors from the published paper as is, of course, with those authors' permission. On the poster, you could put an asterisk after your name with the explanation of the asterisk noting you as the poster presenter. Under no circumstances should the poster list only your name as the author.
'Do people rewrite this info or just use the info from the paper? … I'm guessing it's frowned upon to literally copy/paste the abstract, but I really doubt I could write a better version that says the exact same thing'.
Tending to stricter word limits, usually poster abstracts are shorter compared to those of journal papers so you may not be able to use the exact same abstract anyway. Remember though that if you end up re-writing some phrases or sentences to conform to a strict word limit, you should get approval of the re-worded abstract from all the other authors. Your poster should also indicate that it's based on a published paper by clearly referencing it, i.e., title, list of authors, journal (year, volume, issue, page numbers), on the poster itself.
https://www.quora.com/If-you-have-contributed-to-a-paper-that-is-already-published-can-you-use-the-same-title-abstract-and-images-for-a-poster-presentation/answer/Tirumalai-Kamala