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ccdsharp - enhance/sharpen an image
ccdsharp [parameter=value]
Various methods to sharpen/image enhance an image can be tried
out here. The program is not very consistent in coordinate systems, some
(such as laplace) preserve it, others (aregan/pregan) shift the image
by half a pixel. Most images will have some edge effects too. For divergence/vorticity
the images are assumes to be vx and vy, in that order.
The following
parameters are recognized in any order if the keyword is also given:
- in=
- Input image file. For certain modes (see mode= below) the input file must
contain at least two images. No default.
- out=
- Output image file. No default.
- mode=
- Modes (laplace, aregan, pregan, divergence, vorticity). Minimum match
applies. [Default: laplace].
To compute the vorticity of two images,
vx and vy, containing the X and Y velocities you would:
cat vx vy | ccdsharp - v.vor vor
ccdmath(1NEMO)
Peter Teuben,
20-Sep-95 V0.1 Created PJT
5-apr-96 V0.2 added divergence, vorticity PJT
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