Legacy ImageMagick Discussions Archive

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

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.

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

It would be nice to have this blur added.

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

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/