Gaussian derivatives, Electrical Engineering

Assignment Help:

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 ?


Related Discussions:- Gaussian derivatives

Induction motor, A very widely used alternative form of synchronous motor i...

A very widely used alternative form of synchronous motor is the  ' indu c tion motor'. This has the advantage that it does not require an auxiliary motor to run the rotor up t

Circuit realization of the srff, Q. You are to construct a modified truth t...

Q. You are to construct a modified truth table for the circuit realization of the SRFF shown in Figure. As indicated in the text, you guess an output and then go back ato check it

Convolution, determine & sketch convolution y(n) of signal X(n)=an , -3 ...

determine & sketch convolution y(n) of signal X(n)=an , -3 0 , elsewhere H(n)=1 , 0 0 , elsewhere

Neural network, solve problem by neural network using matlab code

solve problem by neural network using matlab code

Biasing the bjt, Q. Biasing the BJT? A simple method of biasing the BJT...

Q. Biasing the BJT? A simple method of biasing the BJT is shown in Figure. While no general biasing procedure that will work in all cases can be outlined, a reasonable approach

How power amplifiers are classified, a. Describe briefly with suitable diag...

a. Describe briefly with suitable diagrams, how power amplifiers are classified with reference to operating point? b. Get the maximum efficiency of class A direct coupled power

Problem of current electricity, charges of +2q and -4q are fixed a distance...

charges of +2q and -4q are fixed a distance d apart as in figure_2(a).find electric field at the point A ,B and C (b) sketch roughly the electric field lines.

Magnet, Magnetic materials

Magnetic materials

How can a jfet be used as a voltage controlled resistor, Q. How can a JFET ...

Q. How can a JFET be used as a voltage controlled resistor. Explain from drain characteristics? The region to the left of the pinch off locus is referred to as the ohmic region

Explain in brief the functions of clock generator chip, Explain in brief th...

Explain in brief the functions of the clock generator chip, 8284. 8284 Clock generator: The 8284 is an ancillary element to the microprocessors. Without any clock generato

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd