.\
cggaussscl.pro
top cgGaussScl
Image Processing
result = cgGaussScl(image [, SIGMA=float] [, MAX=MAX] [, MIN=MIN], NEGATIVE=NEGATIVE [, OMAX=byte] [, OMIN=byte])
This is a utility routine to perform a gaussian gray-level pixel transformation stretch on an image.
Return value
A byte scaled image is returned.
Parameters
- image in required
The image to be scaled. Written for 2D images, but arrays of any size are treated alike.
Keywords
- SIGMA in optional type=float default=1.0
The sigma value or width of the Gaussian function.
- MAX in optional
Any value in the input image greater than this value is set to this value before scaling.
- MIN in optional
Any value in the input image less than this value is set to this value before scaling.
- NEGATIVE
If set, the "negative" of the result is returned.
- OMAX in optional type=byte default=255
The output image is scaled between OMIN and OMAX.
- OMIN in optional type=byte default=0
The output image is scaled between OMIN and OMAX.
Examples
Display a Gaussian scaled image:
cgLoadCT, 0 ; Gray-scale colors.
image = cgDemoData(11) ; Load image.
cgImage, cgGaussScl(image)
Author information
- Author:
FANNING SOFTWARE CONSULTING:
David W. Fanning 1645 Sheely Drive Fort Collins, CO 80526 USA Phone: 970-221-0438 E-mail: david@idlcoyote.com Coyote's Guide to IDL Programming: http://www.idlcoyote.com- Copyright:
Copyright (c) 2007-2015, Fanning Software Consulting, Inc.
- History:
Change History:
Written by: David W. Fanning, 5 September 2007. Now setting NAN keyword on all MIN and MAX functions. 2 Dec 2011. DWF. Renamed cgGaussScl from the retired GaussScl. 26 March 2015. DWF.
File attributes
| Modification date: | Thu Mar 26 17:05:32 2015 |
| Lines: | 141 |
| Docformat: | rst rst |