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

Energy band diagram, E n e r gy Band Diagram Energy band d...

E n e r gy Band Diagram Energy band diagram in qualitative form is sketched by following the following process: 1. The semiconductor device is supposed to be ma

Test, current and voltage

current and voltage

Perform octal subtraction, Q. Do as directed. a) Hexadecimal addition: ...

Q. Do as directed. a) Hexadecimal addition: 101 + ABC b) (43.25) 10-(89.75) 10 using 1's Complement c) Octal Subtraction 123-777 d) (123)6 + (435)6 = ( ? )6 e) ABC

Describe the physical properties and uses of the brasses, Describe the phys...

Describe the physical properties and uses of the Brasses. Brass - It is an alloy of copper and zinc along with 60 percent copper and 40 percent zinc. Its properties are- 1.

Determine the cross-sectional conducting area, Q MCM is the abbreviation fo...

Q MCM is the abbreviation for 1 kcmil. problem for a de?nition of cmil.) Data for commercial-base aluminum electrical conductors list a 60-Hz resistance of 0.0880 /km at 75°C for

Emi, #quest explain cro..

#quest explain cro..

What do you mean by lumped-circuit elements, Q. What do you mean by Lumped-...

Q. What do you mean by Lumped-circuit elements ? Electric circuits or networks are formed by interconnecting various devices, sources, and components. Although the effects of e

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