downsampling methods

Posted by Aviva Vaknin on Nov 16, 2009; 6:07am
URL: http://imagej.273.s1.nabble.com/downsampling-methods-tp3690444.html

Hello all!

I have implemented a Lanczos8 kernel convolution to downsample images
which works well for 30-40 iterations.

After that ringing artifacts enter, even if I reduce a 1600x1200 image one
pixel
each iteration.

Should this be occurring ? Is there a way around it ?
Is there a better down sampling method for this type of problem ?

thanks,
aviva