OpenELEC Testbuilds for RaspberryPi Part 2
(2014-04-01, 08:38)M3Rocket Wrote:
(2014-03-31, 16:21)popcornmix Wrote: It is likely there will be a change to the default scaling kernel soon as 0.14 does seem preferred (it was my favourite too).
Ideally we should stretch the shape of the kernel with the scaling ratio.

These were the kernels:

0.00 Sinc over the range +-3*PI with Hamming window applied,
0.02 Sinc with Hamming window applied,
0.04 Sinc over the range +-2.5*PI with Hamming window applied,
0.06 Sinc,
0.08 Sinc with Blackmann window applied,
0.10 Sinc with no side lobes,
0.12 Sinc with half the first side lobe
0.14 Mitchell Netravali (with B=1/3,C=1/3)
0.16 nearest_neighbour,

Here's another suggested by the image scaling guy (you can just enter that while video is playing):
Code:
vcgencmd scaling_kernel   0  -4  -8 -14 -18 -19 -16  -8   9  39  77 122 166 206 237 255 255 237 206 166 122  77  39   9  -8 -16 -19 -18 -14  -8  -4   0
It's a cubic with A=-0.5.

To my eyes (TV sharpness at zero), 0.08 exaggerated compression artifacts more than 0.14. My preference is for 0.14. Although I would be really curious about comparing it to Lanzcos3.

Yes please, another vote for Lanczos3 if possible... no idea on how to do it myself. Confused


Messages In This Thread
RE: OpenELEC Testbuilds for RaspberryPi Part 2 - by ajp2k14 - 2014-04-01, 11:51
AW: RE: - by DieterLumpen - 2013-07-29, 20:50
include guires switch? - by hpbaxxter - 2013-08-01, 21:46
RE: dual audio?? - by pootler - 2013-08-03, 17:13
Help, watch 3D Film on Non 3D TV - by unix72 - 2013-08-09, 12:39
Remote Controllers - by tfft - 2013-08-14, 09:11
rbej repeatable crash - by RichG - 2013-08-19, 12:43
New Tester - by theneverstill - 2013-10-03, 17:16