Re: Ma a parte il setup...
Citazione:
Marlenio ha scritto:
...quali sono le percepibili differenze e vantaggi rispetto agli altri filtri di FFDShow in qualche modo analoghi?
La teoria e' spiegata a pagina 1 del post:
LimitedSharpen() can be used like a traditional sharpener, but producing much less artefacts. It can be used as a replacement for the common "resize(x4)-XSharpen-resize(x1)" combo, with very similar results (perhaps even better) - but at least 2 times faster, since it requires much less oversampling. And by chaining several instances, it can even be used for something like a "[very] poor man's deconvolution" - but only if one knows how to battle the noise
What's the problem with "normal" sharpening?
Traditional sharpeners like sharpen() or UnsharpMask() compare each pixel against the average of its neighborhood, and emphasize the difference between them. The results (something like "per-pixel contrast enhancement") are good as long as the strength is kept low enough. But artefacts will arise very soon.
XSharpen, being a non-linear sharpener, replaces each pixel with either its darkest or brightest neighbor, depending on which is nearer in range. By the nature of the method, XSharpen produces edges with maximal possible aliasing (jaggyness). So one has either to reduce the percentage, thereby weakening the overall effect, or to work with big supersampling, which makes it both extremely slow and less effective.
http://www.avsforum.com/avs-vb/showt...4&page=1&pp=30
http://forum.doom9.org/showthread.php?s=&threadid=84196
In pratica prova ;)
Re: Re: Ma a parte il setup...
Citazione:
ciuchino ha scritto:
La teoria e' spiegata a pagina 1 del post:
[...]
In pratica prova ;)
OK, ma a parte quanto riportato nella teoria, chi lo ha provato nella pratica che cosa ha riscontrato?
Re: Re: Re: Ma a parte il setup...
Citazione:
Marlenio ha scritto:
OK, ma a parte quanto riportato nella teoria, chi lo ha provato nella pratica che cosa ha riscontrato?
La moglie di Aldo dice che si vede meglio , altri hanno riportato le loro impressioni.
Alla fine come al solito c'e' chi ne parlera' bene e chi ne parlera' male.
Ciao :)