[Paraview] Fast-LIC implementation - where are we?

Mon Sep 14 12:45:33 EDT 2009

You should use the LIC implementation provided in VTKEdge (which will
move to VTK shortly). It is unlikely that the FastLIC implementation
you are referring to is going to be part of VTK due to several reason:
it is not complete, it is not maintained, it does not work in parallel
and it has a GPL license.

-berk

On Mon, Sep 14, 2009 at 11:00 AM, Fred Fred <stan1313 at hotmail.fr> wrote:
> Let me come back to this topic, I wonder if there is something news on it or
> implementing LIC on ParaView is still a "challenge"?
>
> [Paraview] FastLIC implementation
>
> Simone Crippa crippa at kth.se
> Tue Oct 3 10:15:35 EDT 2006
>
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>
> ________________________________
>
> Dear list,
>
>
> sorry for the long posting to come, but I'd like to introduce to all of
> you the result of a MSc. thesis performed here at KTH by Markus
> Ringlander, the result is a:
>
> 		FASTLIC ALGORITHM CODED IN C++/VTK
> 	(... with the goal to be included in ParaView as a filter.)
>
> As opposed to the LEA implementation by Jean Favre, this program can
> deal with unstructured (ultimately: triangles), 3D surfaces. For more
> details, see:
>
> http://www.ave.kth.se/staff/aero/crippa/lic.html
>
> As of today, the program can't be incorporated in ParaView, due to a
> missing texture mapping actor, see:
>
> http://www.ave.kth.se/staff/aero/crippa/lic.html#remaining_issues
>
> Is there somebody at Kitware, or elsewhere that has spent a thought on
> how to get this actor into ParaView?
>
> Just to point out that I/we are not the only ones interested in having
> LIC in ParaView, I searched the vtkusers/paraview mailing lists and
> found a hit as far back as Dec. 2000 ... where Berk said something about
> incorporating LIC implementations made available to him :-) (see below)
>
> Well ... here's our shot:
>
> http://www.ave.kth.se/staff/aero/crippa/info_staff_files/lic-source-1-2.tar.gz
>
> http://www.ave.kth.se/staff/aero/crippa/info_staff_files/lic-source-1-2.zip
>
>
> Regards, Simone Crippa
>
>
>
>
> =========================================================================
> [vtkusers]/[Paraview]
>
> Markus Ringlander; Sat May 27 20:19:15 EDT 2006
>
> Hi vtk-users,
>
> I will do my MSc thesis in scientific visualization, and specifically
> the task is to do Line Integral Convolution (LIC) on unstructured
> surface grids in 3D. I am supposed to use VTK for this task. After
> having studied the online documentation for VTK, and done searches on
> this mailing list, I have a few wonderings I hope someone can shed a
> light on. Let me try to explain them.
>
> The basic technique I will use for this 3D surface LIC is to generate
> a texture for each polygon in the grid. I have seen examples on a few
> texture mappings, where one can assign texture coordinates to vertices
> of the polygons building up the grid. In the end one uses
> actor-SetTexture(...). But all examples I have seen refer to one
> sample image/texture as source.
>
> In my case, I am going to traverse the elements in the grid, and
> generate a 2D texture/image for each element. So I will have many
> separate textures.
>
> A bit simplified, I was thinking something like this:
>
> 1) Read my unstructured grid from a file.
> 2) Iterate through each polygon in the grid.
> 3) For each polygon in the iteration, perform the LIC algorithm on it,
> which here gives a texture as output for each polygon.
> 4) Map texture coordinates from this specific image/texture to the
> corresponding real world polygon.
> 5) Back to 3)
> 6) Output the whole textured grid on the screen.
>
> As I stated earlier, I have only seen examples of a single actor for
> texturing, refering to a single image/texture file. In my case I am
> wondering if I need to set up an actor for each texture I create? It
> can then be over 10,000 textures...
>
> Please help me with some information wheather this is doable in VTK,
> and if so, any helpful code snippet for the assignment of the textures
> to each polygon.
>
> Thanks!
>
> /Mark
>
> ==========================================================================
>
> Jean M. Favre; Mon Sep 13 02:39:01 EDT 2004
>
> Christpher Auer wrote:
>> Hello everyone!
>>
>> can someone tell me please, if there is currently some development on
>> the implementation of "LIC Algorithm" and/or "Unstructured grid volume
>> rendering"? Or do you know someone who might know this?
>>
>
> We have an implementation of the Lagrangian Eulerian Advection algorithm
> published at IEEE Vis 2001. It produces LIC images for steady fields and
> time-dependent LIC-like textures with spatial and temporal continuity
> for un-steady fields.
>
> Source code, Makefile and test routines are provided for VTK and ParaView.
>
> http://www.cscs.ch/~jfavre/Projects/vtkLEA/vtklea.htm
>
> ==========================================================================
>
> Thomas Brandner; Sun Jan 9 05:53:52 EST 2000
>
> Dear  vtk users,
>
> I`m currently working on a study project about line integral convolution
> (LIC).
> This is a texture-based technique for effectively displaying 2D and 3D
> vector fields.
>
> Has anyone managed to implement this type of filter in vtk ?
>
> As it is to be used  in VR-applications, the focus  is not so much on
> accuracy but rather on efficiency to maintain interactivity.
>
> Thanks very much in advance for any help,
> Thomas Brandner
>
> ==========================================================================
>
> And as far back as Mon Dec 11 10:16:19 EST 2000, Berk said:
>
> LIC, FLIC and spot noise are in my to-do list. I don't know when I can
> get to them though. If someone has implementations, I will be happy to
> incorporate them to vtk.
>
> 	Berk
>
> "David P. Munich" wrote:
>>
>> Does anyone know of an available implementation of Line Integral
>> Convolution(LIC) in VTK?
>>
>> Thanks,
>> Dave
>>
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> --
> Simone Crippa
> Research assistant, Dipl.-Ing.
> Royal Institute of Technology (KTH)
> Aeronautical and Vehicle Engineering
> Division of Aerodynamics
> Teknikringen 8
> SE-10044 Stockholm, Sweden
> +46 (0)8 790 6465
>
>
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