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Basic Information on imsharp
Task: imsharp
Purpose: Sharpen an image
Categories: map analysis
IMSHARP is a MIRIAD task which sharpens an image. No sub region can
be selected, the whole image is processed. Masking information
is properly processed though: if any of the associated pixels has
been masked out, so will be the corresponding pixel in the output
image.
Other methods to sharpen images: use SMOOTH with norm=0.0 and
divide the smoothed map by the original map using MATHS (unsharp
masking). Also: Shift or rotate an image, and subtract it from
the original. Good for (non)axysymmetric features resp.
Key: in
The input image. No default.
Key: out
The output image. No default.
Note: Nasty things happen to 4D+ datasets.
Key: method
Select the method to use to sharped an image.
Currently only simple 2D laplacian derivatives.