What filter/effect is this?

Discuss digital image processing techniques and algorithms. We encourage its application to ImageMagick but you can discuss any software solutions here.
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Don
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What filter/effect is this?

Post by Don »

Hello everyone,

I was wondering if anyone would know what effect/filter the following image(see link) has applied to it: https://picasaweb.google.com/DonX113/Ef ... 6616229442

Appreciate it, thank you.

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fmw42
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Re: What filter/effect is this?

Post by fmw42 »

I think it might be coherence-enhancing diffusion (though not implemented in IM)

see
http://www-artemis.it-sudparis.eu/~roug ... C-1999.pdf
http://www.kyprianidis.com/p/eg2011/jkyprian-eg2011.pdf

snibgo
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Re: What filter/effect is this?

Post by snibgo »

The tendancy towards mid-tones, with the darker sky becoming haloed around the darker trees, is characteristic of techniques known as tone-mapping, HDR (High Dynamic Range) or pseudo-HDR.

There have been posts on those techniques in these forums.
snibgo's IM pages: im.snibgo.com

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fmw42
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Re: What filter/effect is this?

Post by fmw42 »

It would be nice to see the original image. Any chance you have it?

If tone mapping as snibgo says, you could try one of my tonemap scripts if on Linux/Mac or Windows w/Cygwin

Don
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Re: What filter/effect is this?

Post by Don »

fmw42 wrote:It would be nice to see the original image. Any chance you have it?

If tone mapping as snibgo says, you could try one of my tonemap scripts if on Linux/Mac or Windows w/Cygwin
Hi. No, unfortunately I do not have the original image. Tone mapping seems to be the closest to that effect.

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