matlab code for edge preservation index of an image

A common technique for removing noise from images is by blur-
ring them with a weighted mean or a Gaussian filter. Through these
processes noise reduction is achieved, but unfortunately, valuable
information is lost and the details of object boundaries are
deformed. A solution to this problem, especially for document
images, is the use of an edge preserving smoothing technique
(adaptive mean filter) where the amount of blurring for each pixel is
determined after gathering local informa ....etc

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function = epi(Io, If)
= size(Io);
o=0;
p=0;
for i = 1:a
for j = 1:b
if((i+1)<=a) && ((j+1)<=b))
r= abs(Io(i,j) - Io(i+1,j));
t= abs(Io(i,j) - Io(i,j+1));
l=abs(If(i,j) - If(i+1,j));
u=abs(If(i,j) - If(i,j+1));
o = o+ r + t;
p= p +l+ u;
r;
t;
l;
u;
o;
p;
end
end
end
y =(o./p ) ....etc

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hi,
I am unable to get exact idea about to calculate the L index of voltage stability. please help me..or upload matlab code to calculate L index method ....etc

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Authors:
C.Subramani
Arunbhaskar M
Jagadeesh kumar M
Subhransu Sekhar Dash
Abstract:
Voltage stability has recently become a challenging problem for many power systems. Voltage instability is one phenomenon that could happen in power system due to its stressed condition. The result would be the occurrence of voltage collapse which leads to total blackout to the whole system Investigation and online monitoring of power system stability have become vital factors to electric utility suppliers. Contingency screening and ranking (CS&R) ....etc

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to get information about the topic voltage stability full report ppt and related topic refer the page link bellow

http://seminarsprojects.net/Thread-study-of-evaluated-a-statcom-application-for-voltage-stability-by-dynamic-pv-curves?pid=47050&mode=threaded

http://seminarsprojects.net/Thread-voltage-stability ....etc

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what is the code for high pass version of a gray scale image with a 3 by 3 pixel standard approximation of laplacian operator used in the edge preservation index equation? please help me by providing the code. ....etc

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Hi,
I am Jayasree.N ; M.Tech student from Osmania University. Iam working on a Project: Optimal location of FACTS devices for improvemnt of Voltage Stability ; In this regard, could any one please mail me the MATLAB code for L index?

I have done loadflow for 30 bus system in NR method; got the Y bus matrix for IEE 30 bus system. Now how to separate the load and generator buses -- some one please let me know.
Thank You

jayasree.N ([email protected]) ....etc

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sir,
i need this project please reply me or post shortly. ....etc

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Mahatma Gandhi University was established on 2 October 1983 in Kottayam district of Kerala, India. Mahatma Gandhi University (formerly Gandhiji University), has been approved by UGC and accredited (B+) by the National Assessment and Accreditation Council of India. Only four universities among 15 universities in the state are qualified to receive NAAC accreditation. The university have around 100 affiliated colleges spread over five districts in central Kerala. ....etc

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matlab program for voltage stability index calculation by using nr method

Because of the high demand, the size of the power system which provides electricity is increasing and also becoming complex. By considering environmental or economical aspects, many power systems are forcefully operated close to their stability limit. Therefore methods to monitor their performances are required.

The project is a complete analysis of load flow problem and solution for different power system network. The load flow solution is done by the help of computer ....etc

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