[Bug 22988] New: Visible reduction in image quality
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Bug ID: 22988 Summary: Visible reduction in image quality Change sponsored?: --- Product: Koha Version: master Hardware: All OS: All Status: NEW Severity: major Priority: P5 - low Component: OPAC Assignee: oleonard@myacpl.org Reporter: magnus@libriotech.no QA Contact: testopia@bugs.koha-community.org Target Milestone: --- I have a library that is noticing a visible reduction in image and thumbnail quality after upgrading from 18.11.03 to 18.11.05. This could be a regression from bug 21987. They have a lot of scanned black and white covers. The largest text in the thumbnails used to be readable, but after the upgrade, it is not. Their scanning process has not changed, so the original image that they upload should be of the same quality as before. Old, good image: http://bibliotek.dis-danmark.dk:8080/cgi-bin/koha/catalogue/image.pl?imagenu... http://bibliotek.dis-danmark.dk:8080/cgi-bin/koha/catalogue/image.pl?imagenumber=4332&thumbnail=1 New, not so good, image: http://bibliotek.dis-danmark.dk:8080/cgi-bin/koha/catalogue/image.pl?imagenu... http://bibliotek.dis-danmark.dk:8080/cgi-bin/koha/catalogue/image.pl?imagenumber=4463&thumbnail=1 Did we reduce the quality a bit too much? -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Owen Leonard <oleonard@myacpl.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Component|OPAC |Tools Assignee|oleonard@myacpl.org |koha-bugs@lists.koha-commun | |ity.org -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Jonathan Druart <jonathan.druart@bugs.koha-community.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on| |21987 CC| |jonathan.druart@bugs.koha-c | |ommunity.org Referenced Bugs: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21987 [Bug 21987] Local cover 'thumbnail' size is bigger than 'imagefile' size in biblioimages table -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #1 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- (In reply to Magnus Enger from comment #0)
so the original image that they upload should be of the same quality as before.
They are not: 4332 is 300.54 KB (307,750 bytes) 4463 is 12.49 KB (12,785 bytes) -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #2 from Magnus Enger <magnus@libriotech.no> --- (In reply to Jonathan Druart from comment #1)
(In reply to Magnus Enger from comment #0)
so the original image that they upload should be of the same quality as before.
They are not: 4332 is 300.54 KB (307,750 bytes) 4463 is 12.49 KB (12,785 bytes)
But Koha does not store the original image as uploaded, only a scaled down version (as long as the image is larger than the max size of the full image). So the 12.49 KB size of 4463 is the result of increased data loss after the patch for bug 21987 was introduced. I think the problem might be that the original images they upload are not set as "True color" when they should be. I'll ask them to investigate that. -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Cab Vinton <bibliwho@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |bibliwho@gmail.com --- Comment #3 from Cab Vinton <bibliwho@gmail.com> --- For what it's worth, we uploaded a cover image JPEG with the following attributes (per Windows built-in file properties): 2433 x 2234 pixels 72 dpi 24 bit depth Resolution unit 2 Color representation sRGB Koha converted this a PNG w/ just the 2 following attributes: 600 x 551 pixels 8 bit depth When I ran the latter thru an online metadata viewer, I got the following: "WARNING: No color-space metadata and no embedded color profile: Windows and Mac web browsers treat colors randomly." -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Liz Rea <wizzyrea@gmail.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |wizzyrea@gmail.com --- Comment #4 from Liz Rea <wizzyrea@gmail.com> --- 100% this is caused by 21987 - we have people complaining about this as well. The workaround is, I believe, to make sure that the covers that are uploading are in true color, but doing that defeats the purpose of adding 21987 in the first place. I think we should undo 21987 and look closely at how we are storing images in Koha, generally. My controversial opinion is that it would probably be nicer to store them in the filesystem rather than the database. Cheers, Liz -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #5 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- Created attachment 92018 --> https://bugs.koha-community.org/bugzilla3/attachment.cgi?id=92018&action=edit Bug 22988: Always set trueColor for the fullsize image -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Jonathan Druart <jonathan.druart@bugs.koha-community.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |Needs Signoff --- Comment #6 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- I do not have the time right now to test this patch but I think it could fix the problem. -- You are receiving this mail because: You are the assignee for the bug. You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #7 from Magnus Enger <magnus@libriotech.no> --- Sorry Jonathan, my customer says the patch did not fix the problem. I will try and look into this some more. -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Mason James <mtj@kohaaloha.com> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |mtj@kohaaloha.com -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Owen Leonard <oleonard@myacpl.org> changed: What |Removed |Added ---------------------------------------------------------------------------- Assignee|koha-bugs@lists.koha-commun |jonathan.druart@bugs.koha-c |ity.org |ommunity.org -- You are receiving this mail because: You are watching all bug changes. You are the assignee for the bug.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Magnus Enger <magnus@libriotech.no> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|Needs Signoff |Failed QA --- Comment #8 from Magnus Enger <magnus@libriotech.no> --- Setting to FQA since the problem was not solved. -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #9 from Jonathan Druart <jonathan.druart@bugs.koha-community.org> --- I will need a step-by-step plan to recreate, as well as an image (or at least a link). While waiting for a correct fix it seems that we should consider a revert of the original patch to prevent the problem to propagate. -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Katrin Fischer <katrin.fischer@bsz-bw.de> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |katrin.fischer@bsz-bw.de --- Comment #10 from Katrin Fischer <katrin.fischer@bsz-bw.de> --- (In reply to Jonathan Druart from comment #9)
I will need a step-by-step plan to recreate, as well as an image (or at least a link).
While waiting for a correct fix it seems that we should consider a revert of the original patch to prevent the problem to propagate.
If it's doable we should consider that - leaving it that way another release woud not be good. -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #11 from Magnus Enger <magnus@libriotech.no> --- (In reply to Katrin Fischer from comment #10)
If it's doable we should consider that - leaving it that way another release woud not be good.
Agreed. -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Martin Renvoize <martin.renvoize@ptfs-europe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |23963 Referenced Bugs: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=23963 [Bug 23963] Visible reduction in image quality -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Martin Renvoize <martin.renvoize@ptfs-europe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks|23963 | Referenced Bugs: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=23963 [Bug 23963] Visible reduction in image quality -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Martin Renvoize <martin.renvoize@ptfs-europe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on|21987 |23963 CC| |martin.renvoize@ptfs-europe | |.com Referenced Bugs: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=21987 [Bug 21987] Local cover 'thumbnail' size is bigger than 'imagefile' size in biblioimages table https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=23963 [Bug 23963] Visible reduction in image quality -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #12 from Martin Renvoize <martin.renvoize@ptfs-europe.com> --- Bug 21987 reverted as per above requests whilst we work on a longer term resolution here. -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 --- Comment #13 from Martin Renvoize <martin.renvoize@ptfs-europe.com> --- Revert action recorded as bug 23963 -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Martin Renvoize <martin.renvoize@ptfs-europe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Severity|major |normal -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Martin Renvoize <martin.renvoize@ptfs-europe.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Blocks| |23984 Referenced Bugs: https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=23984 [Bug 23984] Local cover 'thumbnail' size is bigger than 'imagefile' size in biblioimages table -- You are receiving this mail because: You are watching all bug changes.
https://bugs.koha-community.org/bugzilla3/show_bug.cgi?id=22988 Marjorie Barry-Vila <marjorie.barry-vila@collecto.ca> changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |marjorie.barry-vila@collect | |o.ca -- You are receiving this mail because: You are watching all bug changes.
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