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

DC motor & encoder, If a high resolution emcoder is used for position contr...

If a high resolution emcoder is used for position control, will the number of pole count in the DC motor be matter? What is the requirement for the DC motor in order to work with h

Merits and demerits of fixed bias with emitter resistor, Merits: The ci...

Merits: The circuit has the trend to stabilize operating point against changes in temperature and β-value. Demerits: In this type of circuit, to keep I C  independent o

Zero flag - sub subtract instruction , Zero Flag Since results  is n...

Zero Flag Since results  is non  zero in this  example zero  flag is reset.

Amplifier, Amplifier Usually, an amplifier or simply amp, is any devic...

Amplifier Usually, an amplifier or simply amp, is any device which changes, generally increases, the amplitude of a signal. The connection of the input to the output of an amp

How DRAM is different from SRAM, How DRAM's are different from SRAM's?  Why...

How DRAM's are different from SRAM's?  Why DRAMs are said to employ address multiplexing? Dynamic RAM (DRAM) is fundamentally similar as SRAM, except that this retains data for

Compute the maximum internal torque, For the motor speci?ed in figure,  com...

For the motor speci?ed in figure,  compute the following: (a) The load component I' 2 of the stator current, the internal torque T, and the internal power P m for a slip of 0.

Magnetic Circuits:, A circular ring of magnetic material has a mean length ...

A circular ring of magnetic material has a mean length of 1m and a cross sectional area of .001m^2.A sawcut of 5mm width is made in the ring . calculate the magnetizing current req

What is microprocessor, Write short notes of the following. a)    Microproc...

Write short notes of the following. a)    Microprocessor b)    Modes of data transfer. c)    I/O processor d)    Associative memory e)    Software and Hardware interrupt

Pop psw instruction , POP PSW Instruction It is similar to  above pop...

POP PSW Instruction It is similar to  above pop  instruction but instead of normal  register  pairs it uses PSW  as its operand. Program status word  comprises of the content

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