[amirus] dcraw
- From: Alexey Ivanov <amis@xxxxxxxxxxxx>
- To: amirus@xxxxxxxxxxxxx
- Date: Sun, 17 Sep 2006 00:25:30 +0300
Приветствую всех!
Начиная со следующего релиза в комплекте будет присутствовать документация :)
А пока могу предложить её тут:
До встречи!
dcraw(1) dcraw(1)
NAME
dcraw - command-line decoder for raw digital photos
SYNOPSIS
dcraw [OPTION]... [FILE]...
DESCRIPTION
dcraw decodes raw photos, displays metadata, and extracts
thumbnails.
OPTIONS
-v Print verbose messages, not just warnings and
errors.
-c Write decoded images or thumbnails to standard out-
put.
-e Extract the camera-generated thumbnail, not the raw
image. You'll get either a JPEG or a PPM file,
depending on the camera.
-z Change the access and modification times of an AVI,
JPEG or raw file to when the photo was taken,
assuming that the camera clock was set to Universal
Time.
-i Identify files but don't decode them. Exit status
is 0 if dcraw can decode the last file, 1 if it
can't. -i -v shows metadata.
dcraw cannot decode JPEG files!!
-d Show the raw data as a grayscale image with no
interpolation. Good for photographing black-and-
white documents.
-D Same as -d, but totally raw (no color scaling).
-h Output a half-size color image. Twice as fast as
-q 0.
-q 0 Use high-speed, low-quality bilinear interpolation.
-q 2 Use Variable Number of Gradients (VNG) interpola-
tion.
-q 3 Use Adaptive Homogeneity-Directed (AHD) interpola-
tion.
-f Interpolate RGB as four colors. Use this if the
output shows false 2x2 meshes with VNG or mazes
with AHD.
July 18, 2006 1
dcraw(1) dcraw(1)
-B sigma_domain sigma_range
Use a bilateral filter to smooth noise while pre-
serving edges. sigma_domain is in units of pixels,
while sigma_range is in units of CIELab colorspace.
Try -B 2 4 to start.
-b brightness
By default, dcraw writes 8-bit PGM/PPM/PAM with a
BT.709 gamma curve and a 99th-percentile white
point. If the result is too light or too dark, -b
lets you adjust it. Default is 1.0.
-4 Write 16-bit linear pseudo-PGM/PPM/PAM with no
gamma curve, no white point, and no -b option.
-T Write TIFF output (with metadata) instead of
PGM/PPM/PAM.
-k black
Set the black point. Default depends on the cam-
era.
-a Automatic color balance. The default is to use a
fixed color balance based on a white card pho-
tographed in sunlight.
-w Use the color balance specified by the camera. If
this can't be found, print a warning and revert to
the default.
-r mul0 mul1 mul2 mul3
Specify your own raw color balance. These multi-
pliers can be cut and pasted from the output of
dcraw -v.
-H 0 Clip all highlights to solid white (default).
-H 1 Leave highlights unclipped in various shades of
pink.
-H 2-9 Reconstruct highlights. Low numbers favor whites;
high numbers favor colors. Try -H 5 as a compro-
mise. If that's not good enough, do -H 9, cut out
the non-white highlights, and paste them into an
image generated with -H 3.
-m Same as -o 0.
-o [0-5]
Select the output colorspace when the -p option is
not used:
0 Raw color (unique to each camera)
1 sRGB D65 (default)
July 18, 2006 2
dcraw(1) dcraw(1)
2 Adobe RGB (1998) D65
3 Wide Gamut RGB D65
4 Kodak ProPhoto RGB D65
5 XYZ
-p camera.icm [ -o output.icm ]
Use ICC profiles to define the camera's raw col-
orspace and the desired output colorspace (sRGB by
default).
-p embed
Use the ICC profile embedded in the raw photo.
-t [0-7,90,180,270]
Flip the output image. By default, dcraw applies
the flip specified by the camera. -t 0 disables
all flipping.
-j For Fuji Super CCD cameras, show the image tilted
45 degrees, so that each output pixel corresponds
to one raw pixel.
-s For Fuji Super CCD SR cameras, use the secondary
sensors, in effect underexposing the image by four
stops to reveal detail in the highlights.
For all other cameras, -j and -s are silently
ignored.
SEE ALSO
pgm(5), ppm(5), pam(5), pnmgamma(1), pnmtotiff(1), pnm-
topng(1), gphoto2(1), cjpeg(1), djpeg(1)
AUTHOR
Written by David Coffin, dcoffin a cybercom o net
July 18, 2006 3
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