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

Explain the bidirectional shift registers, Explain the Bidirectional Shift ...

Explain the Bidirectional Shift Registers? A Reversible or A Bidirectional shift register is one in which the data can be shift either left or right. D flip-flops are used by

Overall performance indicator method, Overall Performance Indicator Method ...

Overall Performance Indicator Method Overall Performance Indicator could be derived from a combination of few of the specific core indicators. The way this combination is comm

Resonance, i want to plot a system current transfer matrix element vs frequ...

i want to plot a system current transfer matrix element vs frequency curve.how can i draw it?any suggestion.

Working with various instructions using debug, The purpose of this experime...

The purpose of this experiment is to introduce you to a powerful 80x86 assembly/machine language utility called DEBUG. Preparing Your DEBUG Environment If you have an older

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

Calculate the sending end voltage, A 150 km long, 3-phase, 400 kV overhead ...

A 150 km long, 3-phase, 400 kV overhead line is used to transmit 1800 MW to a distribution area at 0.9 power factor lagging. The line parameters per phase and per unit length in st

Design a 4-bit universal shift register, Q. Obtain a block diagram of a shi...

Q. Obtain a block diagram of a shift-left/right register using D flip-flops. Q. Design a 4-bit universal shift register. Q. (a) Show a block diagram of an SRFF connected to s

What do you mean by instrument transformers, Q. What do you mean by Instrum...

Q. What do you mean by Instrument transformers? These are generally of two types, potential transformers (PTs) and current transformers (CTs). They are designed in such a way t

Single Phase Induction Motor, How do I connect a Capacitor on the machine i...

How do I connect a Capacitor on the machine if it has a start mechanism

Machine control instructions , Machine Control Instructions Instructio...

Machine Control Instructions Instructions used to control  various machine operations are kept  in this group.

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