Filtering, Electrical Engineering

Assignment Help:

Filtering

 (i) Write an m-file "mymedian.m" which will take an image and filter size and perform median filtering. Display input and output image. Use 

help median

function imm=mymedian(imn,msize)
[h w]=size(imn);
kernel_size=?
imm=imn;
for i=msize+1:(h-msize)
  for j=msize+1:(w-msize)
    imm(i,j)=median(reshape(imn(i-msize:i+msize,j-msize:j+msize),1,kernel_size));
  end
end

What is the median value of an image?

Comment on the complexity (number of operations per pixel) of the algorithm. 

(ii) Write an m-file "mygaussian.m" which will take an image and filter size and perform Gaussian filtering. Display input and output image.


function img=mygaussian(imn,sigma)
g=gauss(sigma);

img=?(iii) Perform median and Gaussian filtering on  face_g.png, face_m.png,statue_m.png.
What kind of noise the median filer is useful for?
What kind of noise the Gaussian filer is useful for?


Related Discussions:- Filtering

Machines 1, diagram of armeture reaction

diagram of armeture reaction

Resultant force, State and prove parallelogram law of forces and explain i...

State and prove parallelogram law of forces and explain it''s applications

Compute current in given the circuit configuration, Q. Consider the circuit...

Q. Consider the circuit configuration shown in Figure. Let V i = 1V, R 1 = 1000, R 2 = 2000, and A = 3. (a) Compute i 2 . (b) If R 1 changed to 500 , recompute i 2 .

Electromechanical and electronic switching system, Q. Compare electromechan...

Q. Compare electromechanical switching system with electronic switching system. Sr. No Electromechanical switching System Electroni

Explain the operation of the counter, Q. Figure shows the mod-8 counter whi...

Q. Figure shows the mod-8 counter which counts from 010 to 710 before resetting. Explain the operation of the counter and sketch the timing diagram.

Digital signal processing, what can I do to sharpen the roll off and flatte...

what can I do to sharpen the roll off and flatten the passband of a finite impulse response filter

On which hysteresis loss is least depend, Hysteresis loss least depends on ...

Hysteresis loss least depends on (A) Frequency.                         (B) Magnetic field intensity. (C) Volume of the material.     (D)Grain orientation of material.

Inductive coupling, advantages and disadvantages of inductive coupling

advantages and disadvantages of inductive coupling

Input voltage to system and the output motor speed, A system contains an am...

A system contains an amplifier with a gain of 10 offering the armature voltage for a motor which provides an output speed which is proportional to the armature voltage, the constan

Advantages of an rc coupling over a direct coupling, Q. What are the advant...

Q. What are the advantages of an RC coupling over a direct coupling? Draw a basic Rc coupling network and explain. Figure -RC-coupled transistor amplifier The network

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