[magick-users] blur part of image

[John Hauf]

Thank you! That's exact what I want!

John

Anthony Thyssen wrote:
> John Hauf on  wrote...
> | Thanks for the answer - it worked. Is it also possible to have diffuse
> | edges of a region?
> |
> For that the best way is to blur the image than use a mask to
> select what parts should come from what image.
> 
> That is
>   load image
>   create a blured image
>   create a seletion mask  (white on black) (also blurred)
>   and do a masked 3 image composition...
> 
>   convert logo:  \( -clone 0 -blur 5x2 \) \
>           \( -clone 0 -gamma 0  -fill white \
>              -draw 'rectangle 220 180 320 280'  -blur 10x5 \
>           \) -composite   logo.png
> 
> 
> A better solution however is to somehow do a variable blur, where
> some mask is used to control the overall amount of bluring.
> However this is not currently posible with IM, though it is a feature
> that I myself have been wanting.
> 
> Fred Weinhaus has however developed a multi-level composition blur
> script called "variableblur" to do this in a rough way until some type
> of better  masked blur operator can be developed.
>    http://www.fmwconcepts.com/imagemagick/variableblur/index.php
> 
> 
> You can also pixelate the image area instead of blurring....
> Like they do to fuzz out 'naugthy bits' and faces on TV news.
> In this case lets try to protect anonymity of the IM wizard. :-)
> 
>   convert logo:  \( -clone 0 -scale 10%  -scale 1000% \) \
>           \( -clone 0 -gamma 0  -fill white \
>              -draw 'circle 400,200 440,200'  -blur 10x5 \
>           \) -composite   logo.png
> 
> Again the drawn mask (a blurred circle this time) is used to
> definate and limit the area that should be pixelated.
> 
>   Anthony Thyssen ( System Programmer )    <A.Thyssen at griffith.edu.au>
>  -----------------------------------------------------------------------------
>   "We learned dwarves are not ment to fly."
>   came a voice from the edge of the circle.   -- Rick Cook, "Wizardry Cursed"
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>      Anthony's Home is his Castle     http://www.cit.gu.edu.au/~anthony/
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