Resampling - which algorithm is best?

Lasse · Post by **Lasse** » Tue Jan 11, 2005 5:07 pm

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

Olivier_G · Post by **Olivier_G** » Tue Jan 11, 2005 5:59 pm

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

helmut · Post by **helmut** » Tue Jan 11, 2005 8:42 pm

Lasse wrote:When I resample a picture .. which method is the best?
Where are the pros/cons?

Is there an overview? (Gaussian, Nearest neighbour,...)

"Lanczos" resampling is recommended and gives best results in most cases. More details in the document Olivier pointed to.

Lasse · Post by **Lasse** » 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

helmut · Post by **helmut** » Mon Jan 17, 2005 6:50 am

Lasse,

Lasse wrote:I did some resample-examples by myself!

thank you for testing this and providing this info to other people!

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

wfa · Post by **wfa** » Fri Sep 13, 2019 6:48 pm

Lasse 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

Can any one update the link? Thanks

Post by **XnTriq** » Fri Sep 13, 2019 8:30 pm

wfa wrote: ↑Fri Sep 13, 2019 6:48 pmCan any one update the link? Thanks

XnView Software

Resampling - which algorithm is best?

Resampling - which algorithm is best?

Check that one

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