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Re: Gaussian Enhancement on Image Histogram [message #45582 is a reply to message #45581]

Tue, 20 September 2005 09:30

raval.chintan
Messages: 54
Registered: May 2005

Member

Hi David,

Thank you for your suggestion. One can definitely use FCN but in order
to obtain a monotonically increasing FCN I need to
1) Map the Histogram for 0- 255 levels to 3 sigma of Gaussian PDF
2) Obtain the cumulative histogram for this mapping (This will yield
monotonically increasing function)

If you refer IDL documentation the GaussInt function computes the PDF
for mean value of 0 and variance of 1(i.e standard deviation of 1). My
problem is to compute the Gaussian PDF with 3 sigma (standard
deviation) for a given value of x with mean at 127.

I would appriciate if you can point out how I can achieve this. It
would be nice if you can provide some example code.

J.D I thought this would interest you? looking forward for your
comments on this

Chintan Raval

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[Message index]

		Re: Gaussian Enhancement on Image Histogram By: James Kuyper on Wed, 21 September 2005 07:35
		Re: Gaussian Enhancement on Image Histogram By: raval.chintan on Wed, 21 September 2005 04:04
		Re: Gaussian Enhancement on Image Histogram By: raval.chintan on Tue, 20 September 2005 22:58
		Re: Gaussian Enhancement on Image Histogram By: David Streutker on Tue, 20 September 2005 10:10
		Re: Gaussian Enhancement on Image Histogram By: David Fanning on Tue, 20 September 2005 09:41
		Re: Gaussian Enhancement on Image Histogram By: raval.chintan on Tue, 20 September 2005 09:30
		Re: Gaussian Enhancement on Image Histogram By: David Streutker on Tue, 20 September 2005 08:50
		Re: Gaussian Enhancement on Image Histogram By: raval.chintan on Tue, 20 September 2005 07:30
		Re: Gaussian Enhancement on Image Histogram By: David Fanning on Mon, 19 September 2005 23:27
		Re: Gaussian Enhancement on Image Histogram By: raval.chintan on Mon, 19 September 2005 23:14
		Re: Gaussian Enhancement on Image Histogram By: Jeff N. on Mon, 19 September 2005 12:22
		Re: Gaussian Enhancement on Image Histogram By: Jeff N. on Mon, 19 September 2005 11:01

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