Re: [Gimp-developer] Gaussian highpass filter

[saulgoode]

Quoting Daniel Andrei :

> Hello,
> I'm sorry if this is not the proper place to post this , but I have a
> question and I hope some of you may be able to help me, so here goes:
> I need to apply a gaussian high pass filter on a grayscale image represented
> as a pixel matrix.

Wouldn't that basically be the difference between the original image  
and a Gaussian blurred version? (i.e., duplicate the layer, set the  
layermode of the duplicate to "Difference", and Gaussian blur the  
duplicate)



___
Gimp-developer mailing list
Gimp-developer@lists.XCF.Berkeley.EDU
https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer

[Gimp-developer] Gaussian highpass filter

[Daniel Andrei]

Hello,
I'm sorry if this is not the proper place to post this , but I have a
question and I hope some of you may be able to help me, so here goes:
I need to apply a gaussian high pass filter on a grayscale image represented
as a pixel matrix.
After doing some reading I understand that I need to a pply a transformation
matrix on each pixel of the image, actually a transformation vector in two
passes, once for the x axis and once for the y axis resulting in something
like(for a row, for example):

transofrmationSum = the sum of the transformationVector elements
for (i=0, i___
Gimp-developer mailing list
Gimp-developer@lists.XCF.Berkeley.EDU
https://lists.XCF.Berkeley.EDU/mailman/listinfo/gimp-developer