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dangermouse

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Everything posted by dangermouse

  1. :arrow: Can we get any "official" info if this has at least made it onto the roadmap ? There is no real hurry for this feature, but it would be nice to see this planned for some future release. All the best, Dangermouse
  2. I have added a screenshot of The GIMP's Save as JPEG dialogue. There you can see the options for saving Jpegs as progressive and for selecting the subsampling factor. I think these would make *really* nice and overdue additions to Paint-NET's JPEG export. here is some additional Info on progressive JPEGs: Note: There is an additional benefit not mentioned the following explanation: As I said above, progressive JPEGs usually have a slightly smaller filesize with identical quality when compared to "normal" JPEGs. -------------------------------------------------------------------------- A simple or "baseline" JPEG file is stored as one top-to-bottom scan of the image. Progressive JPEG divides the file into a series of scans. The first scan shows the image at the equivalent of a very low quality setting, and therefore it takes very little space. Following scans gradually improve the quality. Each scan adds to the data already provided, so that the total storage requirement is roughly the same as for a baseline JPEG image of the same quality as the final scan. (Basically, progressive JPEG is just a rearrangement of the same data into a more complicated order.) The advantage of progressive JPEG is that if an image is being viewed on-the-fly as it is transmitted, one can see an approximation to the whole image very quickly, with gradual improvement of quality as one waits longer; this is much nicer than a slow top-to-bottom display of the image. The disadvantage is that each scan takes about the same amount of computation to display as a whole baseline JPEG file would. So progressive JPEG only makes sense if one has a decoder that's fast compared to the communication link. (If the data arrives quickly, a progressive-JPEG decoder can adapt by skipping some display passes. Hence, those of you fortunate enough to have T1 or faster net links may not see any difference between progressive and regular JPEG; but on a modem-speed link, progressive JPEG is great.) Except for the ability to provide progressive display, progressive JPEG and baseline JPEG are basically identical, and they work well on the same kinds of images. It is possible to convert between baseline and progressive representations of an image without any quality loss. (But specialized software is needed to do this; conversion by decompressing and recompressing is *not* lossless, due to roundoff errors.) -----------------------------------------------------------------------------------
  3. *BUMP* Come on guys, who's with me on that one IMHO this is a quite desirable feature which should be at least put on the roadmap.
  4. It would be nice if support for saving progressive JPEGs was added. Progressive JPEGs are nice for webpages on slow connections, as they get gradually sharper wen being loaded. On top of that,. they are usually a tad smaller than normal (baseline) JPEGs And while we're at it ... it would also be nice if the subsampling factor could be chosen in the "Save as JPEG" Dialog. Right now the JPEG export is quite basic, as only the quality (0-100) could be selected. These two improvements would make it MUCH nicer Best regards, dangermouse
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