[tei-council] facsimile - how to do stand-off facsimile markup?

[Sebastian Rahtz]

Conal Tuohy wrote:
> The coords don't relate to a specific image; they are relative to the <surface/> which represents the current page (i.e. the one linked to the preceding <pb/>). The <ab> element in the example belongs to that surface because its preceding page break is linked to it. 
hmm. "the preceding <pb/>" seems like a loose sort of way to work.
>> or what the units are?
>>     
>
> The units are implicitly pixels I suppose. In the demo I did at Berlin, I made the units explicit. In this current draft under discussion, we are using @coords borrowed from METS, which doesn't seem to have units. I don't know if this is actually an issue, since I think that facsimile images will be bitmaps and hence px is a reasonable unit. WDYT?
>   
If there are several images of a page, at different resolutions, then
the @coords is going to mean different things in different images.
That seems impossibly imprecise. No idea how METS deals with
this problem. And of course it assume bitmap images; do we
rule out ever dealing with vector graphics?
> In this case, the <area/> is relative to the <surface/> which has graphics p1.jpg and p1-thumbnail.jpg. Since the @scale of the first graphic = "1", therefore the coordinates can be interpreted to be equivalent to px in that graphic, whereas the second graphic has px which are 0.1 x that size.
>   
gurk. "the second graphic has px which are 0.1 x that size" is not
quite how I would express this. the @coords apply _after_ the scaling???

have I missed somewhere an ODD customization which encapsulate
the current proposal so that I can try it in the wild?

sebastian