Image enhancement, Electrical Engineering

Assignment Help:

Explain briefly the operation, draw the functions, formulas and observations.

(i) Write an m-file "imnorm.m" which takes an image finds min and max values and uses them to normalize the image.

What kind of image enhancement operation is performed within that function? Draw an illustration.

Write an m-file for each of the following operations:
(ii) compute negative image (neg.m)

(iii) apply power law transform with a superscript 0.2 (powlaw.m)

(iv) perform histogram equalization of an image (hist_eq.m)
           it should display 5 figures:
                        the input image and its histogram
                        the integral histogram
                        the output image and its histogram
            the following function will give you a histogram of pixel values between 0 and 255
            h=sum(hist(im,[0:255])'); %help hist; help sum;
      stem(h,'.k');

function imh=hist_eq(im);
figure(1);
imshow(?);

h=?
figure(2)
stem(?);

% compute integral image
hint=h;
for i=2:256           
hint(i)=hint(i-1)+h(i);
end

hint=255*hint/hint(end); %normalize the integral histogram to have values between 0 and 255
figure(3)
stem(?);

imh=hint(im);%modify pixel intensities
imh=uint8(imh);%normalize to byte values
figure(4)
imshow(?)

h=?
figure(5)
stem(?);

What histogram equalization does? What should be the shape of the output histogram? Why it isn't?


Related Discussions:- Image enhancement

Amperes circuital law, Amperes Circuital Law The    observation    tha...

Amperes Circuital Law The    observation    that    magnetic    field strength varied with distance from the wire led to the following statement: 'If  the  magnetic  field

Explain fundamentals of load flow analysis, Explain Fundamentals of Load Fl...

Explain Fundamentals of Load Flow Analysis The calculation of electrical power system load flow or current flow is a problem which has no direct solution. It is not that a solu

M6a2: lab: the floating-point unit, Introduction The purpose of this ex...

Introduction The purpose of this experiment is to examine the operation of the floating-point unit. Procedure 1. Show how the number 355.6 is converted into a normalize

Technical loss reduction - power supply, Technical Loss Reduction - Power S...

Technical Loss Reduction - Power Supply 1. Technical loss reduction could be achieved through several measures such as network reconfiguration, load balancing, network recondu

Compute the voltage, Q A point charge Q 1 =-5 nC is located at (6, 0, 0). ...

Q A point charge Q 1 =-5 nC is located at (6, 0, 0). Compute the voltage v ba between two points a(1, 0, 0) and b(5, 0, 0). Comment on whether point a is at a higher potential wi

Electron, Electron congratulations

Electron congratulations

Open-circuit and load characteristics of generator, Q. Open-circuit and loa...

Q. Open-circuit and load characteristics of generator? The open-circuit and load characteristics of a separately excited dc generator, along with its schematic diagram of conne

Compute the average number of open links, A zipper has N links every link h...

A zipper has N links every link has a state in which it is closed with energy 0 and a state in which it is open with energy 0 We require that the zipper only unzip from one side (s

Find the output voltage in terms of the input voltage, Q. Find the output v...

Q. Find the output voltage in terms of the input voltage? In order to illustrate the insensitivity of feedback circuits to variations of the op-amp parameters, let us consider

The resistance of a 7 m length of the similar cable, The resistance of a 2 ...

The resistance of a 2 m length of cable is 2.5?. Verify (a) the resistance of a 7 m length of the similar cable and (b) the length of the same wire when the resistance is 6.2

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