Scale-space pyramids, Electrical Engineering

Scale-space pyramids

  Write an m-file "scale_space.m" which computes scale space representation of an input image for a given scale "sigma" and displays them.

(i) 4 scale levels, all the levels have the same size.

function scale_space(imn, sigma)

s=sigma;
figure(1);
imshow(imn,[]);
for i=1:3
  g=gauss(s);
  imgx=?
  imgxy=?
  s=?
  figure(i+1);
  imshow(imgxy,[]);

end

(ii) 4 scale levels, every next level is twice smaller than the previous one.
To sample the image use:
imn=imgxy(1:sampling_step:end,1:sampling_step:end);
Choose the sampling_step.

Discuss these representations.
How do they differ? Are they equivalent? Which one is more suitable? Why?

Posted Date: 2/26/2013 12:20:53 AM | Location : United States







Related Discussions:- Scale-space pyramids, Assignment Help, Ask Question on Scale-space pyramids, Get Answer, Expert's Help, Scale-space pyramids Discussions

Write discussion on Scale-space pyramids
Your posts are moderated
Related Questions
Q. Define the spectral resolution of satellite? Spectral resolution : The sensitivity to different features of earth is the most important aspects considered in the spectral

Q. What is Time Switches? Principle of a time switch is displayed in Figure. It connects an incoming n channel PCM highway to an outgoing n channel PCM highway. As any incoming

Construction and working of calomel electrode

Define Sampling at a Very High Frequency? By sampling at a very high frequency compared with the signal frequency, we can ensure that we do not miss important information. Anot

Circuit with inductive load  Electromagnetic induction When a conductor is moved across a magnetic field so as to cut by the lines of force (or flux, an electromotive force

A three-phase, four-pole, 220-V, 60-Hz induction machine with a per-phase resistance of 0.5  is operating at rated voltage as a generator at a slip of -0.04, delivering 12 A of li

What is meant by doping? How does it affect a semiconductor? Doping: The process through which an impurity is added to semiconductor is termed as doping. A semiconductor to th

in 8085 name the 16 bit registers

Define the term Paging Unit. Paging Unit: The paging mechanism functions along with 4K - byte memory pages or along with a new extension obtainable to the Pentium with 4M byt

Norton's Theorem Nortons Theorem states: "Any linear circuit containing several energy sources and resistances can be replaced by a single Constant Current generator in para