Gaussian derivatives, Electrical Engineering

Gaussian derivatives

Generate Gaussian kernels for a given scale "sigma", and display the kernel.

The size of the kernel should be floor(3*sigm)+1;

(i) Write an m-file "gauss.m" which generates Gaussian kernel.

function G=gauss(sigm)
s=floor(3*sigm)+1;
x=[-s:s];
G = exp(-x.^2/(2*sigm^2));
G=G/sum(sum(G));
plot(?);

Why G has to be normalized?

(ii) write an m-file gauss_x.m which generates 1 order derivative of the Gaussian kernel.

function G=gauss_x(sigm)
s=floor(3*sigm)+1;
x=[-s:s];

G=?

(iii)  Write an m-file gauss_xx.m which generates 2 order derivative of the Gaussian kernel.

function G=gauss_xx(sigm)
s=floor(3*sigm)+1;
x=[-s:s];
G=?

Observe Gaussian kernels for different sigma values.
Why the size of the kernel should be  (3*sigm)+1 ?

Posted Date: 2/26/2013 12:18:07 AM | Location : United States







Related Discussions:- Gaussian derivatives, Assignment Help, Ask Question on Gaussian derivatives, Get Answer, Expert's Help, Gaussian derivatives Discussions

Write discussion on Gaussian derivatives
Your posts are moderated
Related Questions
Q. Show polarity markings for a single-phase transformer for (a) subtractive polarity, and (b) additive polarity.

what is decibel

Q. Evaluate complex power in power system? The complex power ¯S in a single-phase systemis the complex sum of the real (P) and reactive (Q) power, expressed as follows:

What is the position of the Stack Pointer after the POP instruction? Ans) The address line is 02 greater than the previous value.

to design wheatstone bridge

Discuss the feature of Pentium in brief. The Pentium is a 32-bit superscalar, CISC microprocessor.  The word superscalar is used for the processor that has more than one pipeli

Seal Management - Meter Field Testing For an effective seal management system it is necessary that: i) The  seals  used  are  tamper  proof,  that is they  cannot  be  remo

speed control of single phase ac motors

Normal 0 false false false EN-IN X-NONE X-NONE MOTOR CONTROL

Ferroelectric materials are characterised by (A) Very high degree of polarisation. (B) A sharp dependence of polarisation on temperature. (C) Non-linear dependence o