Re: EXIF support in PNG [was: Modern compressor]
Willem van Schaik <[email protected]>
| Newsgroups | gmane.comp.graphics.png.general |
|---|---|
| Message-ID | <[email protected]> |
... commenting on my own message ... if we think that the main purpose for a PNG EXIF chunk is to let cameras compress raw images in a lossless fashion, then having a lossy JPEG thumbnail in the EXIF chunk is not such a bad thing completely separately we could always request the CIPA folks to add PNG as a fourth compression method for thumbnails in the EXIF standard; which wouldn't require any change to the PNG standard, because from a PNG perspective we consider the EXIF chunk a "black box" mmm, looking at the EXIF metadata in eog, there is a chicken and egg issue: I noticed that one of the markers is "Compression" so maybe there is a need for a change in the EXIF standard, namely to add "PNG Compression" (I'm talking here about the main picture, not the thumbnail Willem On 2016-12-31 15:32, Willem van Schaik wrote: > > Problem is of course what to do with that thumbnail that can be either > JPEG or two types of TIFF. For us a PNG thumbnail would of course make > most sense, but that will likely break a lot of standardization. > > Willem > -- Willem van Schaik <[email protected]> http://www.schaik.com/ ------------------------------------------------------------------------------ Check out the vibrant tech community on one of the world's most engaging tech sites, SlashDot.org! http://sdm.link/slashdot