Interpolation like this?

[anton_foy]

Just read a little about this program called DCRAW which seem to bring out a lot of detail and sharpness from a quite soft source.
http://www.aim-dtp.net/aim/digicam/dcraw/

Seems like a good interpolation is done to the image, would this be possible to use on video source or maybe there is a similar filter for avisynth already?

[foxyshadis]

Same basic idea as LimitedSharpen, SeeSaw, and IIP, really, except that DCRAW causes very bad aliasing to the point of becoming noise artifacts. (You could even simulate that with LS, not that you'd want to.)

If your source is very soft you can use much stronger settings on Didée's filters to bring out the extra detail (at the cost of amplifying noise somewhat), without nearly so much aliasing.

[Pookie]

Look at the example on this page.

http://forum.doom9.org/showthread.php?t=104701&highlight=seesaw

[quake74]

DCRAW is a very good program (and probably the only one which does RAW conversion for free, I use it with GIMP via http://ufraw.sourceforge.net/) but the examples on that page are not representative of the difference in quality btw dcraw and other raw conversion packages, like adobe camera raw or others. All raw images appear very soft and with color/exposure problems, but it's just because they NEED to be processed correctly, like an old negative.

[Mug Funky]

DCraw doesn't do anything amazing with its interpolation, really. what makes it special is what it doesn't do - it gives you the image as the CCD sees it, giving you the most control over how the image looks.

of course 12 bit linear looks dull and dark as hell. human vision is logarithmic where "CCD vision" is linear (this is also the reason why 3D CG images look dull or plain fake - they're also rendered as linear, and without massive tweaking look incredibly boring). however, a linear scale is also the beauty of digital cameras - no other devices really give you this. it's a shame that so many cameras out there don't support RAW.

i'd actually like to see some edge direction going into DCraw - that'd be cool. sort of like predicting the red and blue channels off the green, or even using all pixels to find edges (after performing a "de-screen" on the raw data or some such thing) and using that for interpolation. if EEDI2 were hacked into DCraw we'd be seeing some interesting things.