[Accessibility] HaptoRender as Master's Degree

[Peter Wendorff]

Hi.

For the haptorender project I'm still working on a 
rapid-and-cheap-prototyping solution, more on that probably soon.

But some thoughts about the rendering rules:

I think, that general purpose rendering rules are not possible for 
tactile maps. Such things are impossible for graphical maps - different 
special maps would collide due to restrictions in the overall count of 
distinguishable patterns.

The number of patterns a user can distinguish and, more important, 
identify, is significantly smaller in haptics, I'm pretty sure (although 
it's only an unprooved claim here).
Therefore it's more or less useless to discuss about "the rendering rules".
Depending on the content of the (specific) map, the selection of 
attributes to render and the resulting density of information that has 
to be displayed, it has to be decided which haptical signatures are used 
for which information.

Of course, a standard rendering style for common objects is useful, but 
I would not concentrate too much on that for now.

IMHO the better approach would be to define an interface how arbitrary 
reliefs can be transferred to the haptical renderer, be it as a (well 
defined) vector graphic or as a (e.g. grayscale) pixel matrix.

If there are hardware restrictions like resolution, minimum size of 
extruded areas (stability), minimum size of lower areas ("melting 
material"), then these are the interesting parameters.

regards
Peter

Am 02.03.2012 18:44, schrieb Dr. Thomas Bremer:
> Hello group, hello Daniel,
> great to see that there is more interest in HaptoRender!
> 2012/3/1 Daniel Hänßgen <daniel.haenssgen at stud.fh-hannover.de 
> <mailto:daniel.haenssgen at stud.fh-hannover.de>>
>
>     Design so far:
>     The software is going to be rendering the OSM-data to a b/w-image
>     which is then feed into the output device.
>     For those output devices I have several ideas, but they still need to
>     be evaluated.
>     Anyhow the B/W-image should be independend of the hardware.
>
> Well, you need some vector representation independent of the hardware. 
> The quasi standard is STL 
> <http://en.wikipedia.org/wiki/STL_%28file_format%29>. And yes, this is 
> device independent and can be used by various CAD programs.
>
>     Objective:
>     Creation of the map on paper in less than one hour. Hopefully
>     full-automatically.
>
> What does "on paper" mean for a tactile map?
> Have you already seen page Talk:HaptoRender/Rendering Rules 
> <http://wiki.openstreetmap.org/wiki/Talk:HaptoRender/Rendering_Rules>? 
> I mean all of you! Please contribute!
> Regards
> Thomas
>
>
> _______________________________________________
> Accessibility mailing list
> Accessibility at openstreetmap.org
> http://lists.openstreetmap.org/listinfo/accessibility
>
> To unsubscribe from this mailing list send an empty email to accessibility-unsubscribe at openstreetmap.org

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openstreetmap.org/pipermail/accessibility/attachments/20120302/86feaeae/attachment.html>