: Tool that will do a circular blur/convolution I'm primarily a gimp user, but I want something to blur an image similarly to the way a lens would blur an out of focus background. AFAIK this

I'm primarily a gimp user, but I want something to blur an image similarly to the way a lens would blur an out of focus background. AFAIK this is essentially a circular blur/convolution (assuming circular aperture and ignoring diffraction).

The operation is very straight forward, but I've been searching for a while and the only thing I can come up with is ImageMagick:

convert image.png -define convolve:scale=! -morphology Convolve Disk:20 blurred-image.png

This is great for automating tasks, but is rather cumbersome with trial and error edits. I'd also like an alternative just to double check results. Does anyone know of a tool that does circular blur?

If someone with rep could add more tags, please do: convolution, depth-of-field

[EDIT]
An example...

Custom convolutions give quite a small matrix (for example nothing close to 30x30) and I can't be bothered typing in weights. I'm also very much a fan of live previews with easy adjustments.

10.02% popularity Vote Up Vote Down

: What to do with negative Values in HSV? in my c#-application, I use an RGB to HSV (and back) converter for changing a specified color-spectrum to another. In the actual case: rgb1=5,122,255

@Margaret771

Posted in: #Color #ColorConversion #ColorTheory

1 Comments

: Is it legal to use a commercial font on a T-Shirt to re-sell? I am designing a t-shirt based off of the keep calm and carry on poster. I want to use Avenir Next because it comes with my

@Margaret771

Posted in: #Apparel #FontLicensing

3 Comments

: Good slab font with Polytonic Greek support to go with Caecilia I am typesetting a book in a combination of PMN Caecilia (body text) and FF Clan (headings and other minor things). In this

@Margaret771

Posted in: #FontRecommendation

3 Comments

: How was this mosaic graphic of Jimi Hendrix created? I found this image long time ago, even if I search with the google images search I could not find the creator to ask him/her how this

@Margaret771

Posted in: #AdobeIllustrator #Illustration #Vector

3 Comments

Login to post a comment!

2 Comments

Sorted by latest first Latest Oldest Best

@Eichhorn212

The Focus Blur GIMP plug-in does exactly this:

If you're using Debian / Ubuntu Linux, you can get this and a whole bunch of other useful GIMP plugins (including the totally awesome Resynthesizer) by installing the gimp-plugin-registry package.

10% popularity Vote Up Vote Down

@Heady304

Quite a versatile tool to generate a circular blur comes from the GREY's Magic for Image Computing (G'MIC) plugin for Gimp.

After installation we have access to this tool through G'MIC > Degradations > Blur [depth-of-field] with many convenient settings to control the blur effect:

10% popularity Vote Up Vote Down

Feed

: Tool that will do a circular blur/convolution I'm primarily a gimp user, but I want something to blur an image similarly to the way a lens would blur an out of focus background. AFAIK this

More posts by @Margaret771

: What to do with negative Values in HSV? in my c#-application, I use an RGB to HSV (and back) converter for changing a specified color-spectrum to another. In the actual case: rgb1=5,122,255

: Is it legal to use a commercial font on a T-Shirt to re-sell? I am designing a t-shirt based off of the keep calm and carry on poster. I want to use Avenir Next because it comes with my

: Good slab font with Polytonic Greek support to go with Caecilia I am typesetting a book in a combination of PMN Caecilia (body text) and FF Clan (headings and other minor things). In this

: How was this mosaic graphic of Jimi Hendrix created? I found this image long time ago, even if I search with the google images search I could not find the creator to ask him/her how this

Login to post a comment!

2 Comments

Back to top | Use Dark Theme