Author Topic: binned raw  (Read 3612 times)

sandwich

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binned raw
« on: November 21, 2011, 03:36:33 am »
Is there a technical reason why binned raws cannot be supported? The D800 is coming at 36MP and you can bet there\'s an sraw option in there.

boels069

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binned raw
« Reply #1 on: November 21, 2011, 08:25:14 am »
Probably because the sRAW specs are unknown.
The same seems true for Canon\'s sRAW and mRAW.
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tapas

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binned raw
« Reply #2 on: November 21, 2011, 11:44:31 pm »
that\'s interesting. do sony do a sraw too? afaik all raw specs are unknown. only sony opened their specs after nobody wanted to write raw converters for them, just to encourage more software support.

from what I hear, sraw are not rgbg values, but each pixel is a full rgb pixel. this should make it easier, no need to antialias etc etc right?

Socrates

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« Reply #3 on: November 22, 2011, 12:19:52 am »
Quote from: sandwich;34361
Is there a technical reason why binned raws cannot be supported? The D800 is coming at 36MP and you can bet there\'s an sraw option in there.

They are not binned RAWs.
 
DXO said some time ago that they will consider supporting them but I have not seen anything new from them about this for a while.

boels069

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binned raw
« Reply #4 on: November 22, 2011, 12:20:24 am »
Quote
sRaw and sRaw2 (and surely sRaw1) are encoded in YCbCr
format, and not as CFA RGB data like full RAW !
[/COLOR]
 
See: http://lclevy.free.fr/cr2/#sraw
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OptimiseTheInterfacePLs

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« Reply #5 on: November 22, 2011, 11:17:14 pm »
Quote from: boels069;34388

See: http://lclevy.free.fr/cr2/#sraw

Isn\'t it easier to read YCbCr than to do Bayer Interpolatio on CFA?

"Gao YANG suggested on DPReview forums  these data are Y Cb Cr (luminance/chrominance blue/chrominance red) because the following transformation in Dcraw is a YCbCr to sRGB conversion:"

Why can\'t they just ask Dcraw how to do it?  How does YCbCr workw/o a green part?:confused::confused:

boels069

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« Reply #6 on: November 22, 2011, 11:28:20 pm »
There is "green" info in YCbCr because Cb and Cr are relative to the green value set to unity.
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