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Req GUI: improved image scaling algorithm
#76
(2015-11-18, 13:40)axbmcuser Wrote:
(2015-11-18, 09:12)fritsch Wrote: I nominate Torben for doing it. Sounds like exactly your job.

+9000 from me, too!

I would sit at the edge of the seat and wait, but its gonna be a long wait...

-8999
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#77
I hoped that he's ready by holiday season. Damn.

Anyone else? Smile
⬅️⬅️ Leave 👍 on useful posts  ·  axbmcuser REPO (Easy install)  ·  Confluence ZEITGEIST (intuitive UI for Kodi)
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#78
any news here and changes in jarvis?
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#79
Nothing for Jarvis as its feature frozen, but this is certainly still a problem.

The new sports scores screensaver shows it up particularly.

Image

Here is how one of the exact 512x512 png icons shows in chrome scaled.

Image
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#80
(2016-02-13, 20:51)zag Wrote: Nothing for Jarvis as its feature frozen, but this is certainly still a problem.

The new sports scores screensaver shows it up particularly.

Image

Here is how one of the exact 512x512 png icons shows in chrome scaled.

Image

and yet you still have it listed as completed even though i pm'd you two weeks ago ago about it Wink
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#81
obviously you've misread that post...
AppleTV4/iPhone/iPod/iPad: HowTo find debug logs and everything else which the devs like so much: click here
HowTo setup NFS for Kodi: NFS (wiki)
HowTo configure avahi (zeroconf): Avahi_Zeroconf (wiki)
READ THE IOS FAQ!: iOS FAQ (wiki)
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#82
So to be clear the imagescalingalgorithm in as.xml still doesn't do anything visible in Kodi itself ?
Image
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#83
(2016-03-14, 05:06)Japaja Wrote: So to be clear the imagescalingalgorithm in as.xml still doesn't do anything visible in Kodi itself ?

I'm not entirely sure myself, but I think it's possible to have the good scaling in Kodi itself, but only if you also change the thumbnail size in as.xml to the final size that is used in the skin, which might (maybe?) skip the skin-level scaling.

At least we're closer to a solution, but we're not there yet.
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#84
I'm really confused. So is this implemented if I set the scaling algorithm I want in AS.xml?
Image
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#85
I might be wrong, so keep that in mind, but Kodi can scale an image twice. Once for the original image to the normal thumbnail size, which by default I think is 1080 high for fanart and 720 high for posters. That is the one with the improved scaling.

Then an image might be scaled down again, like for a few where a poster is just an icon and not presented full screen. That scaling is the same as before (maybe?).

This does improve both situations, since the second scaling has a better copy to scale from. ... I think.
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#86
I can confirm that it works how Ned described. All in all it's a great improvement having better quality/scaled images for KODI to work with.

The KODI-GUI-on-the-fly scaling still as "bad" as it was before (especially for the mentioned larger decimation factors), but it's still good progress which is clearly visible on large screens and above all while using projectors!

Of course i would love to see better KODI GUI scaling some day. Until then. I'm quite happy with this progress.
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#87
What do I have to change in as.xml? What to set for projector usage for my case...

Thanks for any help. (I am using Jarvis).
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#88
For now, imho you'd be best off with:

Quote:<advancedsettings>
<imagescalingalgorithm>lanczos</imagescalingalgorithm>
<imageres>720</imageres>
</advancedsettings>

imageres 1080 should be avoided as it creates even more problems with larger decimation factors. 720 (afaik default) is good for now.


Of course you may have to remove the old saved graphics and rescan. ...and you should not have a low performance device running KODI...
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#89
How much slower are we talking, with that lanczos algorithm?
I've recently had an issue with image quality in Kodi 17 (just thought the fanart rendering in a particular skin (EMINENCE 2 MOD REVIVED) could look better).

I'd like to try something to result in clearer resizing (downsizing I believe) , what is Kodi's default? (is it bilinear as the OP guessed?)

The wiki page on advancedsettings.xml is very detailed these days (haven't looked at it in years) but there isn't much info on there comparing the various algorithms.

For the record I am running Kodi on an rPi2 model b.
I am prepared to wait a little longer for initial thumb resizing if it looks better in the end.  (2,3,4,5x longer if necessary).
I have been discussing it with skin creator Alanon over here:  Eminence 2 Mod Revived thread
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#90
Hello everybody ! To illustrate the problem :
FYI, the current trend of pockets/jackets on TMDB : on average 1000x1500 p ; max 2000x3000
(LibreElec Devel 04/09/18 - Beelink GT1 Ultimate S912 3go)
 
Kodi Devel 04-09 VS TMDBImage
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