DC can be captalised as it the initials of the, continuining, author
Dave Coffin.

http://en.wikipedia.org/wiki/Dcraw

Where did you get the file from? The definitive (?) place is

http://www.cybercom.net/~dcoffin/dcraw/

It provides no UI, only file IO, as a good unix citizen ... and is
therefore supported by all platforms. When it is compiled a available
to a platform with a good UI it is perhaps superior to even the
various camera manufacturers proprietary converters, and certainly
more permanent and encompasing.

Computational photography (http://u.tgu.ca/levoy+cam2) can be obtained
in J ... with an IO to sources and a UI to the user.

my primary concern now is with the N900 which has a Maemo OS, a Linux
type. As the only available Frankencamera
(http://u.tgu.ca/Frankencamera_lite) it is a major step for the
computational photography community. Is it possible to put J on the
N900?

Can DCraw be added in the media/platimg addon ?

greg
~krsnadas.org

--

from    Tikkanz <[email protected]>
to      Programming forum <[email protected]>
date    1 February 2011 11:37
subject Re: [Jprogramming] Fractals Visualization and J

The media/platimg addon (available on J6 but not yet J7) provides
native platform support for reading and writing many common image
formats (not raw though).

--

from    David Mitchell <[email protected]>
to      Programming forum <[email protected]>
date    1 February 2011 11:28
subject Re: [Jprogramming] Fractals Visualization and J

I could not find a DCRaw library.

I found dcraw.c and compiled it:

C:\Users\me\Downloads\dcraw>cl dcraw.c /DNO_JPEG /DNO_LCMS /O2b2 /Gry

Microsoft (R) C/C++ Optimizing Compiler Version 16.00.30319.01 for x64
Copyright (C) Microsoft Corporation.  All rights reserved.

dcraw.c(360) : warning C4133: 'function' : incompatible types - from 'UshORt *'
to 'char *'
dcraw.c(360) : warning C4133: 'function' : incompatible types - from 'UshORt *'
to 'char *'
dcraw.c(8607) : warning C4133: 'function' : incompatible types - from 'UshORt *'
 to 'char *'
dcraw.c(8607) : warning C4133: 'function' : incompatible types - from 'UshORt *'
 to 'char *'
Microsoft (R) Incremental Linker Version 10.00.30319.01
Copyright (C) Microsoft Corporation.  All rights reserved.

/out:dcraw.exe
dcraw.obj

I put in in my path and ran it from J7:

   f=:'Z:\My Pictures\2011\2011 01 29\_MG_1078.CR2'
   spawn_jtask_ 'dcraw -6 -T -o 3 -w -v "',f,'"'
Loading Canon EOS DIGITAL REBEL XT image from Z:\My Pictures\2011\2011 01
29\_MG_1078.CR2 ...
Scaling with darkness 257, saturation 4095, and
multipliers 2.351670 1.000000 1.350688 1.001965
AHD interpolation...
Converting to WideGamut D65 colorspace...
Writing data to Z:\My Pictures\2011\2011 01 29\_MG_1078.tiff ...

It seems to work fine this way, but it does not seem to provide general image
support, only raw image conversion.

--

from    greg heil <[email protected]>
to      Programming forum <[email protected]>
date    31 January 2011 20:58
subject Re: [Jprogramming] Fractals Visualization and J

Perhaps an interface to the DCRaw library would be MUCH more useful as
a general tool..

greg
~krsnadas.org

--

from    Devon McCormick <[email protected]>
to      Programming forum <[email protected]>
date    31 January 2011 18:58
subject Re: [Jprogramming] Fractals Visualization and J

I think reading and writing images are all I use from image3, so this
may be sufficient for my purposes.  I'll have to try some conversions
to see if this is the case.
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