Hanning filter
Moderators: helmut, XnTriq, xnview
Hanning filter
There is a resizing filter called Hanning which does an excellent job, especially when reducing images with text. Original screen was 800x600, reduced to 500x375. Even without sharpening, the text is still completely readable. With sharpening, it looks quite good.
Note: There are 2 filters with similar names, haMMing is not very good, but haNNing is.
Note: There are 2 filters with similar names, haMMing is not very good, but haNNing is.
Beautiful !


• Wha ! The one with sharpening is really beautiful !
- I would like really to use it for my screen-shots jobs… but what about the (KB) output file-size, regarding the original one ?

Claude
Clo
Old user ON SELECTIVE STRIKE till further notice •
Shouldn't be any licensing issues, the filter's available in one freeware prog that I know of (uniview) and one open source one (image magick). Both of these have about 16 different filters (the same 8 as xnview, plus about 8 more). Most of the other filters really aren't worth mentioning though. They are really "bad", they just aren't noticeably "good" either.
Filesize comparisons:
original-truecolor.png 93.6k
original-256.png 31.9k
resized-truecolor.png 102k
resized-256.png 28.5k
resized-sharpened-truecolor.png 122k
resized-sharpened-256.png 32.4k
original.jpg 111.2k
resized.jpg 47.5k
resized-sharpened.jpg 56.5k
Filesize comparisons:
original-truecolor.png 93.6k
original-256.png 31.9k
resized-truecolor.png 102k
resized-256.png 28.5k
resized-sharpened-truecolor.png 122k
resized-sharpened-256.png 32.4k
original.jpg 111.2k
resized.jpg 47.5k
resized-sharpened.jpg 56.5k
Nice filter !


• Thank you to add this good stuff !


• The sizes you show here are very good !


Claude
Clo
Old user ON SELECTIVE STRIKE till further notice •
The uniview by andrek? (There's at least 2 different programs called uniview. One is freeware by andrek, the other one I know of is commercial. Funny thing is that I like the freeware one better than the commercial one. :-\ ) I use it primarily for the variety of formats it can save, and especially the advanced features of some of those formats (jpeg2000 for example).
The free, indeed !

{ Just read the "About… for the tester and translator... }

Claude
Clo
Old user ON SELECTIVE STRIKE till further notice •
btw You should remind him to update his own web address in the about screen. It still says http://www.gymrk.sk/andrek/uniview/, which just comes up 404. For those who see this thread and are curious, the current address is http://andrek.wz.cz/uniview/
[OT] URL


Claude
Clo
Old user ON SELECTIVE STRIKE till further notice •