Hey Jim,

I had assumed the code was for still for MRI. And in that context EXIF would 
have made more sense. My bad. Sorry for the noise.

-hendrik

> On Oct 24, 2015, at 02:29, Jim Graham <james.gra...@oracle.com> wrote:
> 
> Hi Hendrik,
> 
> The comment I was making was on the format of the command line arguments we 
> use to override DPI scaling and has nothing to do with image loading.
> 
> You are correct that we don't really deal with the EXIF tags currently, but I 
> am not sure that they represent something we should be dealing with here.  
> The current effort is to normalize the size of UI elements on various 
> displays of different display resolution, but EXIF resolution tag processing 
> would be more of a pre-press feature of an image display and layout editor.  
> That goes a bit beyond the current effort...
> 
>                       ...jim
> 
> On 10/22/2015 11:56 PM, Hendrik Schreiber wrote:
>> 
>>> The reason for this is both to have an explicit token for the regular scale 
>>> factor and also so that this matches with the default image suffix of "@2x" 
>>> so that we can add more ways to provide alternate media such as "@120dpi" 
>>> which are consistent with the values we use here.
>>> 
>>> BTW, we need to discuss ways to automate loading alternate media beyond @2x 
>>> at some point…
>> 
>> I’m not sure it’s practical, but has anybody every thought about using 
>> existing EXIF tags to determine image resolution?
>> 
>> AFAIK, both JPEG and TIFF support EXIF tags 
>> (http://www.w3.org/2003/12/exif/) and thus embedding of resolution metadata 
>> (Labels: resolution, xResolution, yResolution, resolutionUnit).
>> 
>> There could be another special tag @exif (or @native, to avoid being tied 
>> down to one particular way of embedding info), which basically means: check 
>> the embedded resolution info.
>> 
>> -hendrik
>> 

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