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Graphics > Scientific visualization > Re: DirectX vol...
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Re: DirectX volume rendering SDK

by "stefanbanev@[EMAIL PROTECTED] " <stefanbanev@[EMAIL PROTECTED] > Jan 27, 2008 at 06:16 PM

On Jan 26, 8:43 am, "Roger Rowland" <roger.rowl...@[EMAIL PROTECTED]
>
wrote:
> Hi,
>
> I would appreciate it if anyone who has experience withvolume rendering
> applications (e.g. VTK based etc.) would take a look at the first beta
of a
> newvolume renderinglibrary we are currently developing.
>
> Since we made our noddy "3DView" app publicly available on our web site,
it
> has attracted a lot of interest so we have been redeveloping everything
> under DirectX 9 instead of OpenGL to make it easier for Vista
integration
> and have developed everything as an SDK rather than a standalone app.
>
> To download the VxV SDK Beta version 0.1, click the following link -
>
> http://www.rmrsystems.co.uk/download/vxv_b01_setup.exe
>
> By executing the above installer, the VxV SDK will install itself onto
your
> computer. By default, it will reside in C:\Program Files\VxV and will be
> self contained. No other changes will be made to your system apart from
> those necessary for eventual uninstallation (via Add/Remove Programs in
> Control Panel).
>
> Shortcuts to the VxV do***entation and demonstration application will be
> created in your Start menu. Please refer to the do***entation for
further
> instructions.
>
> To re****t bugs or other issues, please use the online forum
athttp://www.rmrsystems.co.uk/forum/index.php?board=3.0or
- if you prefer
-
> email details to vxvb...@[EMAIL PROTECTED]
>
> If anyone does have a serious look at it, please send us a quick email
at
> vxvb...@[EMAIL PROTECTED]
 so we can keep track of how many beta users we
> have.
>
> Thanks in advance.
>
> Dr Roger Rowland
> RMR Systems Limitedhttp://www.rmrsystems.co.uk

Good Job.

I've noticed several issues:

1) Surface-mesh based image looks very "Lego like" (cubical
appearance).
Iso-surface threshold can not be changed interactively and it takes a
long time to change it.

2) I could not get gradient based lighting in VR mode.
I could see only fake lighting via black/white TF setting.
Does it sup****t true lighting (gradient based) in volume rendering
mode?
Apparently it does in surface-mesh mode but my question
about lighting in VR mode.

3) Also, I've noticed _very_ profound
under-sampling (black and white stripes) artifacts when
I tried to see bone tissue or skin tissue. Basically any mid-range
opacity settings cause this artifact. Are you going
to eliminate this artifacts in later releases or you
see it as an inevitable property of your VR technique?

One suggestion: It would be great to see an image gallery on your web
sight. It helps people to get an advance idea about VR image quality
they may expect using your rendering engine.

Thanks,
Stefan
 




 4 Posts in Topic:
DirectX volume rendering SDK
"Roger Rowland"  2008-01-26 16:43:49 
Re: DirectX volume rendering SDK
serg271 <serg271@[EMAI  2008-01-27 04:51:26 
Re: DirectX volume rendering SDK
"Roger Rowland"  2008-01-27 14:12:53 
Re: DirectX volume rendering SDK
"stefanbanev@[EMAIL   2008-01-27 18:16:02 

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tan12V112 Sat Nov 22 14:31:12 CST 2008.