NAME
dcraw - command-line decoder for raw digital photos
SYNOPSIS
fldcraw [OPTION]... [FILE]...
DESCRIPTION
fldcraw 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 output.
-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
fldcraw can decode the last file, 1 if it can’t. -i -v shows
metadata.
fldcraw 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) interpolation.
-q 3 Use Adaptive Homogeneity-Directed (AHD) interpolation.
-f Interpolate RGB as four colors. Use this if the output shows
false 2x2 meshes with VNG or mazes with AHD.
-B sigma_domain sigma_range
Use a bilateral filter to smooth noise while preserving 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, fldcraw 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 camera.
-a Automatic color balance. The default is to use a fixed color
balance based on a white card photographed 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 multipliers can be
cut and pasted from the output of fldcraw -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 compromise. 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)
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 colorspace 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, fldcraw applies the flip
specified by the camera. -t 0 disables all flipping.
-s [0-99]
Select which raw image to decode if the file contains more than
one. For example, Fuji Super CCD SR cameras generate a second
image underexposed four stops to show detail in the highlights.
-j For Fuji Super CCD cameras, show the image tilted 45 degrees, so
that each output pixel corresponds to one raw pixel.
For most cameras, -s and -j are silently ignored.
SEE ALSO
pgm(5), ppm(5), pam(5), pnmgamma(1), pnmtotiff(1), pnmtopng(1),
gphoto2(1), cjpeg(1), djpeg(1)
AUTHOR
Written by David Coffin, dcoffin a cybercom o net
November 4, 2006 fldcraw(1)