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ccdrgb - create composite RGB color images from multiple input images
ccdrgb [parameter=value]
No description available. This
manual page was created by mkman
To convert an RGB into a greyscale image,
there are some general practices:
Y = .2126 * R^gamma + .7152 * G^gamma + .0722 * B^gamma
where gamma = 2.2 typically. This is the Y in XYZ color space. Followed by
L* = 116 * Y ^ 1/3 - 16
in LAB color space, where L* "... aspires to perceptual uniformity ... closely
matches human perception of lightness."
The following parameters
are recognized in any order if the keyword is also given:
- in1=
- Input Red
image [???]
- in2=
- Input Green image [???]
- in3=
- Input Blue image.
If none supplied, the middle channel is computing from the other two,
using c=.
- out=
- Output image file [???]
- c=
- color composition index RGB=(A,
B+c*A, B) if only 2 images are used. [0.5]
- range1=
- Range in image 1 to map.
By default the full ranges are used.
- range2=
- Range in image 2.
- range3=
- Range
in image 3.
- bw=
- If given, scale factors for BW image creation
- nbench=
- Benching
OpenMP [1]
ccdmath(1NEMO)
, ccdppm(1NEMO)
Peter
Teuben
8-jun-98 V0.0 ancient version PJT
10-may-10 V0.1 made it produce something PJT
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