[vtkusers] Re : WebGL 3D Viewer Demo

Tue Jan 17 08:58:38 EST 2012

All these works are really interesting and promising.

Thank you to report this here.

On my side, I'm working with VTK and recently I was trying WebGL. Despite compatibility issues, WebGL works great.

I have been able to load and render STL files.

I'm going to look at xTK which seems really promising.

By the way, is there any simple way to create JSON files from VTK or STL files ?

Best

James

________________________________
 De : Sathish Kumar <kingvsk at aol.com>
À : vtkusers at vtk.org 
Envoyé le : Vendredi 13 Janvier 2012 14h29
Objet : Re: [vtkusers] WebGL 3D Viewer Demo

Hi

Thats nice...

Regards,
Sathish

On Friday 13 January 2012 11:42 AM, Daniel Haehn wrote:
> Hi guys,
>
> this is all very exciting and looks great!
>
> Also, checkout XTK: http://goXTK.com
>
> For example, with XTK it is possible to display a (ascii) .vtk file
> with the following javascript snippet:
>
> ...
> // create a new renderer
> var r = new X.renderer('r');
> r.init();
>
> // load a .vtk file
> var skull = new X.object();
> skull.load('skull.vtk');
>
> // add the object
> r.add(skull);
>
> // .. and render it
> r.render();
> ...
>
> Cheers,
> Daniel
>
> 2012/1/11 Sébastien Valette<sebastien.valette at creatis.insa-lyon.fr>:
>> Hi Sathish,
>>
>> Le 10/01/2012 09:06, Sathish Kumar a écrit :
>>
>> Hi Sebastien,
>>
>> Nice work. I am very much interested to get some feedback about your
>> experience.
>>
>> Are you splitting the 3D data into multiple files?
>>
>> In our case, the data is just 3 .vtk files parsed by the JavaScript client.
>> One file for the skin, one for the bones and one for the lung.
>>
>>
>> What is the size of 3D data file?
>>
>> quite small in that case : about 200kB
>>
>>
>> Is the 3D constructed at runtime?
>>
>>
>> the 3D scene is constructed by the client, there is no work on the
>> server-side, apart from serving the files. This is the simplest case of use
>> for us.
>>
>> I did not know ParaviewWeb had webGL abilities, but at the moment, it seems
>> rather complex to install and to use. Maybe future releases will improve
>> that?
>>
>>
>> Sebastien
>>
>>
>>
>>
>> Thanks,
>> Sathish
>>
>>
>> On Monday 09 January 2012 07:11 PM, Sébastien Valette wrote:
>>
>> Hi Sathish,
>>
>> interesting webpage! It's good to finally see webGL stuff reaching the VTK
>> ecosystem! We also have developed something in our lab, see:
>>
>> http://www.creatis.insa-lyon.fr/~valette/epaule/
>>
>> it is a primitive simultaneous visualization of IRM slices and extracted
>> parts of bones and lung. We've been doing this ourselves as there was no
>> practical library to do that at that time.
>>
>> Greetings,
>>
>> Sebastien
>>
>>
>> Le 06/01/2012 05:49, Sathish Kumar a écrit :
>>
>> One of the features planned for Oviyam-5 is to view 3D images from a DICOM
>> series and without a plugin using WebGL. We've just taken the first steps
>> towards reaching that goal.
>>
>> A technology preview with pre-rendered images is available at this link. Be
>> patient while loading the 3D models, it may take few minutes to load.
>>
>> Technologies used: VTK, HTML5, WebGL, JSON, Javascript, JS-Unzip...
>>
>> Features:
>> 1. Plugin-Free Design.
>> 2. Supports all major modern browsers like Chrome, Firefox, Safari and
>> Opera.(Use the latest versions available.The best performance is with Chrome
>> and Firefox.
>> 3. Supports IPhone, IPad and Android devices. However, due to the lack of
>> memory, only the cube demo works at present
>> 4. Load upto 36 MB of JSON 3D Data (Supports nearly 150 instances/slices).
>> 5. Zoom In/Out Option.
>> 6. Pan Option.
>> 7. One click Axial, Coronal, Sagittal Views.
>> 8. 2D Rotation.
>> 9. 3D Rotation.
>>
>> Upcoming features:
>> 1. Data Compression(Zip/Unzip) support for faster data transfer.
>> 2. Support for Handheld devices.
>> 3. Look-Up Table to get colour.
>> 4. Support for user-defined models.
>>
>> Source:
>> http://forums.dcm4che.org/jiveforums/thread.jspa?threadID=4233&tstart=0
>>
>> Regards,
>> Sathish
>>
>>
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