Table of Contents

Name

ccdsharp - enhance/sharpen an image

Synopsis

ccdsharp [parameter=value]

Description

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.

All sharpening operations are applied to each plane independantly. If you need to sharpen in 3D, use ccdsharp3(1NEMO) .

Parameters

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, grad). Minimum match applies. [Default: laplace].

Examples

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

See Also

ccdsharp3(1NEMO) , ccdmath(1NEMO)

Author

Peter Teuben,

Update History


20-Sep-95    V0.1 Created     PJT
5-apr-96    V0.2 added divergence, vorticity    PJT
12-jan-2012    


Table of Contents