I'm not a pro in imagemagick. I have read documentation, but it has no use if you could not understand clearly how it works. I read in the wikipedia about lanczos filter and would like to try it for image resampling. So how could I use imagemagick to resample an image with lanczos filter in its purest form, without any pre- and post- processing?
From wikipedia reading and from sources that was published in the footnote links, I made an assumption that applying lanczos filter is just like any other kernel convolution and resampling in the middle is the only difference.