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

How many simultaneous calls can be made during peak time, Q. In a hundred-...

Q. In a hundred-line exchange 24 two-motion selectors are used. Draw schematic you suggest for this exchange and illustrate its working. How many simultaneous calls can be made du

Simulink connection, I can,t connect a new subsystem of solar module with a...

I can,t connect a new subsystem of solar module with a capacitor and inductor why and how to solve

Di disable interrupts instruction, DI Disable  Interrupts Instruction ...

DI Disable  Interrupts Instruction The interrupt enable  flip flop is reset and all the  interrupts of 8085 microprocessors  except  TRAP  are disabled . the  instruction  form

Planning and research in power system, Q. Planning and Research in power sy...

Q. Planning and Research in power system? Energy research worldwide is assuming top priority, in particular because of economic, en - vironmental, and resource constraints. DOE

Fourier deconstruction, Find the Fourier series as far as the third harmoni...

Find the Fourier series as far as the third harmonic, to represent the periodic function y, given by the values in the following table. x 0 o 30

Complete the timing diagram of an sr latch, Complete the timing diagram of ...

Complete the timing diagram of Figure of an SR latch.

The initial discharge current, A 0.1µF capacitor is charged to 200 V before...

A 0.1µF capacitor is charged to 200 V before being connected across a 4 kΩ resistor. Determine: (a)  The initial discharge current (b)  The time constant of the circuit

#title.superposition theorem, .coments on the limitation of the superpositi...

.coments on the limitation of the superposition theorem

Single-axis autopilot control system of an aircraft, Q. Single-axis autopil...

Q. Single-axis autopilot control system of an aircraft? Figure (a) shows the block diagram of a simplified single-axis (pitch, yaw, or roll) autopilot control systemwith digita

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