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Hi,
I'm in need of some motion blurring. I'm using Chris Colefax' Galaxy
include file for an animation (actually I will be using these images as
background composite for a LightWave animation). For some realism I need
Motion Blurring in the Galaxy scene. Does anyone have any good tips on
(simulating) motion blurring in POV-Ray (3.1g Windows).
Rob Verweij.
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From: Tony[B]
Subject: Re: Need solution for (simulating) Motion Blur.
Date: 29 Oct 2000 10:07:45
Message: <39fc3d41@news.povray.org>
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In the official POV-Ray, you have to render more frames per second,
depending on the amount of "blur samples" you need and average them
afterwards. In MegaPOV, it's easier.
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"Tony[B]" wrote:
> In the official POV-Ray, you have to render more frames per second,
> depending on the amount of "blur samples" you need and average them
> afterwards.
Warp's TGA Averager does the job -
http://www.students.tut.fi/~warp/PovUtils/
--
Bye
Pabs
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From: Tony[B]
Subject: Re: Need solution for (simulating) Motion Blur.
Date: 1 Nov 2000 10:15:33
Message: <3a003395@news.povray.org>
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> Warp's TGA Averager does the job -
> http://www.students.tut.fi/~warp/PovUtils/
Thank you Pabs.
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Hi,
Rob Verweij wrote:
> I'm in need of some motion blurring. I'm using Chris Colefax' Galaxy
> include file for an animation (actually I will be using these images as
> background composite for a LightWave animation). For some realism I need
> Motion Blurring in the Galaxy scene. Does anyone have any good tips on
> (simulating) motion blurring in POV-Ray (3.1g Windows).
>
> Rob Verweij.
Mh...in 3D Studio it is called "scene motion blur". That means, when the
camera is rotating/moving, the complete scene (=all objects) will have
motion blur. Then you only need to rotate or move the camera and the
background (here: the stars) will be blurred
Maybe Nathan K. add a scene-blurring in his code (MegaPOV).
Paul
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From: Nicolas Calimet
Subject: Re: Need solution for (simulating) Motion Blur.
Date: 3 Nov 2000 06:53:50
Message: <3A02A88C.AF5AF041@free.fr>
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> Mh...in 3D Studio it is called "scene motion blur". That means, when the
> camera is rotating/moving, the complete scene (=all objects) will have
> motion blur. Then you only need to rotate or move the camera and the
> background (here: the stars) will be blurred
>
> Maybe Nathan K. add a scene-blurring in his code (MegaPOV).
I don't think Nathan planed to do it soon.
Months ago I've implemented such a thing in my POV-Ray patch.
The camera is added two more vectors which corresponds to its previous
location and look_at vectors. "Previous" is somewhat related to an
animation. Hence the location of the camera and its look_at vector are
linearly interpolated during frame rendering, usind adaptive method
just like in focal blur. Vectors are precalculated for each frame,
depending on the samples number (at least 5 for correct results).
Linear interpolation is okay for relatively small moves. Also a
move_factor allows to tweak the effect (actually reduces it in the
0..1 range) and somewhat simulates the shutter speed (i.e. for a
25 fps animation, move_factor 0.5 will simulate a 1/50 shutter speed).
For now I've still no tutorial for it. I'm currently performing
an animation with it, and planed to include it on my pages. Yet a simple
explanation can be found in the next file (jump to bottom):
http://pov4grasp.free.fr/download/pov4grasp.txt
This is still an experimental feature since my patch is mainly
for complete different purposes.
Hope it can be useful.
*** Nicolas Calimet
*** http://pov4grasp.free.fr
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