OOF2: The Manual
Name
OOF.Image.Modify.Sharpen — Sharpen the image by convolving with a Gaussian.
Synopsis
OOF.Image.Modify.Sharpen(image
,radius
,sigma
)
Details
- Parent Menu: OOF.Image.Modify
-
Callback: function
doImageMod
in moduleooflib.image.imagemodifier
-
Parameters:
image
- Type: The path to an existing
Image
object. radius
- Radius of the Gaussian. Type: A real number.
sigma
- Standard deviation of the Gaussian. Type: A real number.
Description
Sharpen an Image
by convolving it with a Gaussian operator of
the given radius
and standard deviation
(sigma
), specified in units of the pixel
size. For reasonable results, radius
should be
larger than sigma
. A suitable radius will be
chosen automatically if you set radius
to zero.
This routine comes from the ImageMagick library.
Figure 6.40. Sharpening an Image

A micrograph of Si3N4 (courtesy of C.-H. Hsueh).

The result of sharpening the image with
radius
=0 and sigma
=1.

The result of sharpening the image with
radius
=0 and sigma
=5.