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Science Forum Index » Image Processing Forum » Image Downsampling : Easy to implement methods...
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| rajesh... |
 Posted: Sun May 18, 2008 8:34 pm |
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Guest
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hi,
I urgently want some easy to implement methods/algorithms for
image downsampling. |
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| bugbear... |
| Posted: Mon May 19, 2008 5:09 am |
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Guest
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rajesh wrote:
Quote: hi,
I urgently want some easy to implement methods/algorithms for
image downsampling.
Look in imagemagick.
BugBear |
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| 4N... |
| Posted: Mon May 19, 2008 6:51 am |
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Guest
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"bugbear" <bugbear at (no spam) trim_papermule.co.uk_trim> ha scritto nel messaggio
news:p9-dnc_0ftQgzKzVRVnyjwA at (no spam) posted.plusnet...
Quote: rajesh wrote:
hi,
I urgently want some easy to implement methods/algorithms for
image downsampling.
compute a ratio based on old and new size then pick the pixels to the
transformed coordinates like:
ratiox = new_width/old_width
ratioy = new_height/old_height
x' = x*ratiox
y' = y*ratioy
fast and simple but not very accurate |
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| rajesh... |
| Posted: Mon May 19, 2008 10:36 pm |
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Guest
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On May 19, 4:51 pm, "4N" <x... at (no spam) yyy.com> wrote:
Quote: "bugbear" <bugbear at (no spam) trim_papermule.co.uk_trim> ha scritto nel messaggionews:p9-dnc_0ftQgzKzVRVnyjwA at (no spam) posted.plusnet...
rajesh wrote:
hi,
I urgently want some easy to implement methods/algorithms for
image downsampling.
compute a ratio based on old and new size then pick the pixels to the
transformed coordinates like:
ratiox = new_width/old_width
ratioy = new_height/old_height
x' = x*ratiox
y' = y*ratioy
fast and simple but not very accurate
thanks Bugbear |
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