[vtkusers] WebGL 3D Viewer Demo

[Sebastien Jourdain]

Hi Sathish,

thanks for your answer. So you are saying that the time consuming part
is on the server or do you need also to optimize the client/server
communication? In ParaViewWeb, for the webgl renderer, we've
implemented a streaming mechanism that allow the client to fetch the
geometry by pieces and therefore allow a better feed back in the
loading process. At the end we reach a decent update rate when the
geometry model is huge and is changing due to different filtering
parameter...
But it is nice to see more and more interest in that domain and
several implementations..

Good luck for your release,

Seb

On Sat, Jan 7, 2012 at 3:10 AM, Sathish Kumar <kingvsk at aol.com> wrote:
> Hi Sebastien,
>
> I already tested the dynamic construction of 3D models from the dicom files.
> But it takes a lot of time to construct 3D and load. Currently am trying to
> optimize the overall performance. It will be released soon.
>
> Thanks,
> Sathish
>
>
>
> On Friday 06 January 2012 07:08 PM, Sathish Kumar wrote:
>
> Hi Sabastien,
>
> The models are precomputed from CT Dicom images using VTK and Java.
>
> Well. I already checked the ParaViewWeb. Thanks for the links.
>
> Another good library. http://voxelent.com/
>
> Thanks,
> Sathish
>
> On Friday 06 January 2012 06:22 PM, Sebastien Jourdain wrote:
>
> Hi Sathish,
>
> Nice work !
>
> I was wondering if you took a chance to try ParaViewWeb with its WebGL
> renderer ? I know that the technology underneath is slightly different
> but I'd be really interested to get some feed back from you about your
> experience and especially if your data is precomputed or if they are
> generated at runtime ?
>
> If you are interested, you can give a look at some of our "WebGL
> static export" done inside a ParaViewWeb sample application here:
> - http://paraviewweb.kitware.com/PWApp/WebGL?name=mummy-state
> - http://paraviewweb.kitware.com/PWApp/WebGL?name=Stream-state
> - http://paraviewweb.kitware.com/PWApp/WebGL?name=technicalexpertise-state
> - http://paraviewweb.kitware.com/PWApp/WebGL?name=Bunny-state
>
> Thanks,
>
> Seb
>
> On Thu, Jan 5, 2012 at 11:49 PM, Sathish Kumar <kingvsk at aol.com> wrote:
>
> 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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