1

Up and Down Sampling wihtout Gaussian Blur

asked 2014-03-23 16:42:12 -0600

1045 ●1 ●11 ●29 http://il.linkedin.com...

Is there a function to up/down sample an image without Gaussian blurring, or using a custom separable kernel (besides direct pixel copying)? Like pyrUp() and pyrDown()?
If not, then does anyone have recommendations for an ultra efficient sub-sampling implementation?

edit retag flag offensive close merge delete

1 answer

Sort by » oldest newest most voted

0

answered 2014-03-25 13:01:52 -0600

xaffeine
829 ●2 ●12 ●25

Just use resize with interpolation=INTER_NEAREST

edit flag offensive delete link

Comments

That'll work for down sampling, and it's what I did. But what about up sampling that leaves zeros in empty rows and columns?

Adi ( 2014-03-25 13:41:24 -0600 )edit

I usually use INTER_LINEAR, but I thought nearest would work for that. Does it not?

xaffeine ( 2014-03-25 14:05:35 -0600 )edit

Links

Question Tools

Stats

Asked: 2014-03-23 16:42:12 -0600

Seen: 817 times

Last updated: Mar 25 '14

Related questions

Copyright OpenCV foundation, 2012-2018. Content on this site is licensed under a Creative Commons Attribution Share Alike 3.0 license.

Powered by Askbot version 0.10.2

here is how