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Commons:Featured picture candidates/File:Centaur mosaic - Google Art Project.jpg

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File:Centaur mosaic - Google Art Project.jpg, featured

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Voting period is over. Please don't add any new votes.Voting period ends on 30 Apr 2019 at 14:43:54 (UTC)
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*  Support —Martin Falbisoner (talk) 20:30, 21 April 2019 (UTC)[reply]

Moving to   Oppose due to how dark it is--BoothSift 02:13, 22 April 2019 (UTC)[reply]

Alternative

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I agree--BoothSift 04:32, 22 April 2019 (UTC)[reply]
ZoomViewer is not currently working here either. From the source and considering the resolution I suppose of course a professional quality, but what about the access to the file ? Impossible to display it larger than 4000 px width. What can we do ? -- Basile Morin (talk) 04:40, 22 April 2019 (UTC)[reply]
Fortunately, we can have files bigger than 100 MB. This bug is phab:T218089. Should we stop promoting images because MediaWiki software is broken? I don't think so... Yann (talk) 04:59, 22 April 2019 (UTC)[reply]
Ok -- Basile Morin (talk) 05:05, 22 April 2019 (UTC)[reply]
  • IMO, the point to such a huge resolution is not to see the whole file in a browser, but to be able to crop out some details. You can still see the original resolution in the set of tiles. Regards, Yann (talk) 08:10, 22 April 2019 (UTC)[reply]
  • Still doesn't work for me. The best thing is usually to "tile" the big image. The original is presented in four tiles, but they are of uneven size making two of them too large anyway. If this version (not the 50% jpeg) could be tiled into 6 or 8 tiles, I think anybody could view/download it and if necessary re-assemble the image in their computer. --Cart (talk) 11:24, 22 April 2019 (UTC)[reply]
80Mpixels Habitator terrae 🌍 18:21, 22 April 2019 (UTC)[reply]
Good. Now the zoom works with that version. Thanks, Yann (talk) 18:36, 22 April 2019 (UTC)[reply]
  •   Support Habitator terrae 🌍 11:15, 22 April 2019 (UTC)[reply]
    Habitator terrae while I think the GAP original is a bit dark, you should not change the colour balance. You have no reference and can't just pick a grey tile and say "make that neutral grey". If the tiles have a warm hue then that may be quite natural: this isn't a computer image printed on Xerox copy paper. It is likely the GAP professionals had a colour checker card to ensure their equipment/process was calibrated. Also your file size seems a bit extreme at 592MB. Photoshop with maximum quality 12 gives 436MB but the original was only 207MB so there is little point in saving any higher quality than that. For example Photoshop level 10 is 198MB which is a considerable saving and likely to make the image more accessible. On my PC I have a version with a +1ev exposure increase, a slightly more generous crop (27993×18139), original colour balance (a little warmer) and an sRGB profile so folks all see the same colours. I can stick on Dropbox or upload here if there is interest. -- Colin (talk) 15:43, 22 April 2019 (UTC)[reply]
    @Colin: I don't change the clam; I look at the color levels and change for every RGB channel the max and min input to the real max an min color (defined by a minimun level with my eyes). So this wasn't real color balance. This all was done by GIMP, and saved with 100% JPEG quality, without using the original quality, because that remove data for future edits. Habitator terrae 🌍 17:22, 22 April 2019 (UTC)[reply]
  • @Habitator terrae and Yann: I don't understand your first bit about "the clam"? But it sounds like what you've done is not really an acceptable adjustment. Most images not not reach min and max for RGB and many do not reach min and/or max at all. I would really not expect an old mosaic to be bright white and each colour saturated -- generally they have low contrast and saturation. I did suspect you had effectively increased the global contrast. I have to   Oppose for now because this is an artwork scanned by professionals. Btw, the way to save a copy that avoids removing data for future edits is to save as PNG then generate any JPG copies you need from that. I can upload a version I mentioned above. If you both have no objections I could overwrite this "retouched" file and ping folk, or I could upload separately to a different file (but then need Yann's permission to create a third alt and it gets a bit messy). If folk really want the highest-quality version, I could download the four higher-resolution tiles and recreate this sized image from those. -- Colin (talk) 17:55, 22 April 2019 (UTC)[reply]
@Colin: You can upload a separate file, and I will eventually replace the alternative. Regards, Yann (talk) 18:41, 22 April 2019 (UTC)[reply]
Yann, ok, it will this evening before I can do this. -- Colin (talk) 07:41, 23 April 2019 (UTC)[reply]
Hopefully there is a size for everyone there. -- Colin (talk) 23:23, 23 April 2019 (UTC)[reply]
The ZoomViewer works for all sizes including the gigapixel one! (FYI when you first access ZoomViewer for a new image, it creates a cache of image tiles to use, which for very large images takes so long you get an error message. But if you are patient, the cache gets created eventually, and when you try again it works). Yann since the gigapixel version can be viewed with ZoomViewer and is the highest quality/resolution image we have, and is identical but for size with the two others, I would propose that we should feature as "finest" the gigapixel image.. -- Colin (talk) 09:34, 24 April 2019 (UTC)[reply]
This is very weird. The ZoomViewer works here, even for the biggest one, but not for the current nomination, and even for smaller ones. :oSSS Yann (talk) 17:05, 24 April 2019 (UTC)[reply]
  • Ok, I admit, I was sloppy here. I was pinged by Colin (about the new versions) who now reprimanded me on my talk page. I looked at the versions he uploaded and assumed one of them had also been uploaded onto this alternative version as Yann indicated he would do once they were available. I hope that offer still stands and I will leave my support vote here in the meantime. --Cart (talk) 09:45, 24 April 2019 (UTC)[reply]
  • I'm not sure what Yann intends to do. Yann, please don't overwrite or delete files (for now). Hope we can agree on the optimal file to nominate. Perhaps it would be cleaner to start a new nom? -- Colin (talk) 10:15, 24 April 2019 (UTC)[reply]
  •   Support Great resolution and no issues for me. I recommend downloading the image and using a decent image viewer, nomacs for example can handle this just fine. – Lucas 11:10, 30 April 2019 (UTC)[reply]
Confirmed results:
Result: 19 support, 1 oppose, 0 neutral → featured. /--Basile Morin (talk) 00:30, 1 May 2019 (UTC)[reply]
This image will be added to the FP gallery: Non-photographic media
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