Hello!
When I resample a picture .. which method is the best?
Where are the pros/cons?
Is there an overview? (Gaussian, Nearest neighbour,...)
Regards,
Lasse
Resampling - which algorithm is best?
Moderators: XnTriq, helmut, xnview
Check that one
In addition to making an excellent Editing software (Picture Window Pro), Jonathan Sachs has written some excellent White Papers. Check this one about Resampling methods (PDF).
Olivier
Olivier
Re: Resampling
"Lanczos" resampling is recommended and gives best results in most cases. More details in the document Olivier pointed to.Lasse wrote:When I resample a picture .. which method is the best?
Where are the pros/cons?
Is there an overview? (Gaussian, Nearest neighbour,...)
Re: Resampling
I did some resample-examples by myself!
See it here:
http://www.lassekolb.info/gim30_vergleich.htm (2.4 MB, Description in German)
Some more examples (other images, shrinking) will follow.
Regards,
Lasse
See it here:
http://www.lassekolb.info/gim30_vergleich.htm (2.4 MB, Description in German)
Some more examples (other images, shrinking) will follow.
Regards,
Lasse
Re: Resampling
Lasse,
The important bit of your tests is that you do Upsizing, which means enlarging an existing image. The algorithms will surely do that, but for all I know they work better for downsizing. When downsizing (making the image smaller) the results may differ and I think that Lanczos should be one of the best, then.
Greetings, Helmut
thank you for testing this and providing this info to other people!Lasse wrote:I did some resample-examples by myself!
The important bit of your tests is that you do Upsizing, which means enlarging an existing image. The algorithms will surely do that, but for all I know they work better for downsizing. When downsizing (making the image smaller) the results may differ and I think that Lanczos should be one of the best, then.
Greetings, Helmut
Re: Resampling
Can any one update the link? ThanksLasse wrote: ↑Sun Jan 16, 2005 10:27 pm I did some resample-examples by myself!
See it here:
http://www.lassekolb.info/gim30_vergleich.htm (2.4 MB, Description in German)
Some more examples (other images, shrinking) will follow.
Regards,
Lasse
Re: Resampling
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