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ccdmask - image masking
ccdmask [parameter=value]
ccdmask
creates a mask image from one of more input images based on a simple clip
level. If only one image is given, the output values will be 1 where the
mapvalues are above some clip level, and 0 else.
If multiple images are
given, the output value will be the bitmask (i.e. adding 1,2,4,8,16,32,....)
for each image which has their value larger than the specified clip level.
The following parameters are recognized in any order if the keyword
is also given:
- in=
- Input file(s), separated by comma’s. At least one input
map is needed.
- out=
- Output file, in standard image(5NEMO)
format.
- clip=
- Clip
level(s) for each input file. If not enough numbers are given to match
the number of input files, the last number is repeated. Note that only single
clip levels are allowed, unlike the clip level interface in e.g. ccdmom(1NEMO)
[0.0]
% ccdgen out=map1 object=noise spar=1 seed=1
% ccdgen out=map2 object=noise spar=1 seed=2
% ccdgen out=map3 object=noise spar=1 seed=3
% ccdmask in=map1,map2,map3,map3 out=map_mask clip=0.1,0.15,0.05
### nemo Debug Info: 3 input file(s)
### nemo Debug Info: 89/100 masked in map 1 @ clip 0.1
### nemo Debug Info: 80/100 masked in map 2 @ clip 0.15
### nemo Debug Info: 86/100 masked in map 3 @ clip 0.05
### nemo Debug Info: 87/100 masked in final map
src/image/misc/ccdmask.c
Peter Teuben
21-May-13 V0.1 Created PJT
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