Hanning filter

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Drahken
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Hanning filter

Post by Drahken » Thu Oct 06, 2005 7:33 pm

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.

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Clo
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Beautiful !

Post by Clo » Thu Oct 06, 2005 9:37 pm

:arrow: Drahken

:) Hello !

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 ?

:mrgreen: KR
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ouistiti
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Post by ouistiti » Thu Oct 06, 2005 9:57 pm

2 Drahken

Sounds really good !......


2 Pierre

Pierre, please, add it - if there is no patent / licence issue - of course...

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L'important n'est pas de convaincre, mais de donner à réfléchir.
The important thing is not to convince, but to incite to think.

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Post by xnview » Fri Oct 07, 2005 6:37 am

ouistiti wrote: 2 Pierre

Pierre, please, add it - if there is no patent / licence issue - of course...
Ok, i'll add it
Pierre.

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helmut
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Post by helmut » Fri Oct 07, 2005 6:44 am

xnview wrote:
ouistiti wrote: 2 Pierre

Pierre, please, add it - if there is no patent / licence issue - of course...
Ok, i'll add it
Good stuff. Thank you, Drahken, for pointing us to this filter! :-)

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Drahken
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Post by Drahken » Fri Oct 07, 2005 1:11 pm

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

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Clo
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Nice filter !

Post by Clo » Fri Oct 07, 2005 6:44 pm

:arrow: Pierre

:) Hello !
• Thank you to add this good stuff !

:arrow: Drahken

:) Hello !

• The sizes you show here are very good !

Image I know Uniview so well, I'm even ß-tester and the French translator… but I missed this filter ! I use it mainly for the painting retouchs now… waiting to get the same in XnView (promised)

:mrgreen: K R
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Drahken
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Post by Drahken » Fri Oct 07, 2005 7:10 pm

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).

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The free, indeed !

Post by Clo » Fri Oct 07, 2005 8:15 pm

:D Indeed, the freeware Uniview by Andrej Krutak-friend from Sovakia !

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

:mrgreen: KR
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Drahken
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Post by Drahken » Fri Oct 07, 2005 8:19 pm

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/

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Clo
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[OT] URL

Post by Clo » Fri Oct 07, 2005 8:34 pm

:) Right about the address, I have to write him (that I did not for a while…), hoping he'll restart the development which is sleeping for two years and more…

:mrgreen: K R
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