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

Lhld load hl pair direct instruction, LHLD  Load  HL Pair Direct  Instru...

LHLD  Load  HL Pair Direct  Instruction This  instruction is used to copy the  content  of memory  location specified  by opened  in register L  and copy the content of next  m

Single phase full wave mid point type rectifier , Single Phase Full Wave M...

Single Phase Full Wave Mid Point Type  Rectifier A single  phase full wave  mid point  type controlled  rectifier consists  two  thyristors  one centre tapped  transformer  an

Determine the self inductance of the two coils, Determine the self inductan...

Determine the self inductance of the two coils: Two coils with a coefficient of coupling of 0.6 between them are connected in series so as to magnetize (i) in the same directi

Reverse recovery characteristics, Reverse Recovery Characteristics At t...

Reverse Recovery Characteristics At the end of forward  conduction in diode  reverse current  flows for  a short  time. The  device  doesn't  attain its full blocking  capabili

Explain properties and application of aluminium, Explain properties and app...

Explain properties and application of Aluminium. Properties of Aluminium: 1) Pure aluminium in colour is silver white. 2) Aluminium is a ductile metal and can be put

Explain television signal transmission, Q. Explain Television signal transm...

Q. Explain Television signal transmission? Television signals in television signal transmission are the electric signals generated by converting visual images through raster (T

What is a control word, What is a control word? It is a word kept in a ...

What is a control word? It is a word kept in a register (control register) used to control the operation of a program digital device.

Working of hartley oscillator, Working of Hartley oscillator : When the...

Working of Hartley oscillator : When the collector supply voltage Vcc is switched on, the capictor gets charged. The capacitor discharges through the inductor, setting up oscil

Ramp type dvm, use of ranging and attenuator circuit

use of ranging and attenuator circuit

Compute the starting torque with the starting compen sator, A three-phase, ...

A three-phase, 2200-V, 60-Hz, delta-connected, squirrel-cage induction motor, when started at full rated voltage, takes a starting current of 693 A from the line and develops a sta

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