[Paraview] Question about the ImageResampling Filter

Fri May 20 10:27:43 EDT 2016

Hi Utkarsh,

I am always building Paraview from source on Linux with all the features I need, but there is no rush, I can wait for the next release or if I badly need this functionality I will pull it from the “master”.

A little background:
I was actually playing around when I came across the issue, what I want to achieve is to do fast volume rendering on unstructured meshes. The volume rendering algorithms in Paraview are ultrafast with VTK image files but painfully slow with unstructured grids. I constantly have an idea in mind to map unstructured meshes to image files and then do the volume rendering. Simple as it sounds I could not find an automatic way to achieve this, in the end I had to manually generate image files in a text editor. I also tried with the Gaussian Resampling, but this filter fails in parallel, each process generates its own image file but there is no communication between them, it is not possible to resample data onto these images nor is it possible to save them (Paraview saves data from just one process). I am still hoping to find some smart way of generating image files, ideally automatically refined based on some flow variables of interest and then map the unstructured grid data on the generated VTK images for fast volume rendering.

Regards,
Lukasz

[Beschreibung: Beschreibung: Description : cid:image001.png at 01CF0B8F.DB7831F0]
Łukasz Paluszek
Airbus Helicopters
Aerodynamics Department (ETGA)
86607 Donauwörth
Germany
Tel.: +49 (90) 671 8231
Fax.: +49 (90) 671 9122
Lukasz.Paluszek at airbus.com<mailto:Lukasz.Paluszek at airbus.com>

From: Utkarsh Ayachit [mailto:utkarsh.ayachit at kitware.com]
Sent: 20 May 2016 15:38
To: Paluszek, Lukasz
Cc: paraview at paraview.org
Subject: Re: [Paraview] Question about the ImageResampling Filter

Lukasz,

I'd suggest not to use 'ImageResampling' filter, it was a temporary fix and clearly is buggy. A new filter has been added to ParaView "master", name "Resample To Image". That would do what you want to do more reliably. What platform are you running on? I can send you links to the nightly binaries for the same.

Utkarsh

On Fri, May 20, 2016 at 3:17 AM, Paluszek, Lukasz <lukasz.paluszek at airbus.com<mailto:lukasz.paluszek at airbus.com>> wrote:
Hello All,

Is the Image Resampling filter applicable to all datasets or only VTK Images? Each time I try to use this filter on any other dataset than a uniform image file, Paraview crashes. In Paraview Help it is written: “Accepts input of following types: vtkDataSet vtkCompositeDataSet”. I am using Paraview 5.0.0.

Regards,
Lukasz

[Beschreibung: Beschreibung: Description : cid:image001.png at 01CF0B8F.DB7831F0]
Łukasz Paluszek
Airbus Helicopters
Aerodynamics Department (ETGA)
86607 Donauwörth
Germany
Tel.: +49 (90) 671 8231<tel:%2B49%20%2890%29%20671%208231>
Fax.: +49 (90) 671 9122
Lukasz.Paluszek at airbus.com<mailto:Lukasz.Paluszek at airbus.com>

AIRBUS HELICOPTERS DEUTSCHLAND GmbH

Sitz der Gesellschaft / Registered Office: Donauwörth

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AIRBUS HELICOPTERS DEUTSCHLAND GmbH

Sitz der Gesellschaft / Registered Office: Donauwörth

Registergericht / Registration Court: Amtsgericht Augsburg HRB 16508

Vorsitzender des Aufsichtsrates / Chairman of the Supervisory Board: Guillaume Faury

Geschäftsführung / Board of Management: Dr. Wolfgang Schoder, Vorsitzender / CEO; Thomas Hundt; Johannes Kleidorfer; Dr. Klaus Przemeck; Martin Schübel; Stefan Thomé

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