Light Effect.. from blur?

[dognose]

Hi,

I'm trying to make this image animation effect with IM:



I know I'd have to do it frame by frame, probably from a script. I'm just wondering what command I could use. Is there a directional blur that would create this?

-d

[anthony]

That type of radial blruing is currently not implemented in IM yet

what is implemented is demonstrated in IM Examples, Specialized Blurs
http://www.cit.gu.edu.au/~anthony/graph ... cial_blurs

I have a proposal for a rearangement of the special blurs that would implement this and many other blur styles....
http://www.cit.gu.edu.au/~anthony/graph ... ture/#blur

I myself would like to have this blur implemented.

[dognose]

yeah, the "radial-blur" is really rotational blur..

It would be nice to have this blur added.

[dognose]

I'm wondering if anyone has any new ideas on how to do this effect?

[fmw42]

It is one of the effects that I had planned on implementing with my scripts (basically a single frame). But right now I don't have the time.

You can try to implement it with the use of a colored (binary?) mask image and iterate -distort SRT. Then composite that over the original image.

Basically you script each frame to do a different iterated affine blur changing the direction. See some similar ones that I generated as scripts using iterated affine blurs - zoomblur (just the scale part of SRT) and recursion (varies scale, rotation and translation). You will need to iterate on zoom and rotation with SRT.

I got the ideas from some free java code I found on the web. See http://www.jhlabs.com/ip/blurring.html at the bottom where he does Casting Rays (http://www.jhlabs.com/ip/RaysFilter.java). I then reverse-engineered the effects in IM as a script using -distort SRT.

He has a lot more filter effects at http://www.jhlabs.com/ip/filters/