Assignment #9

Original Pictures from Assignment 6 #3 part c

Picture1

Picture2

Question 1: Method 1: Convert images to images with only 64 colours

A=imread('picture1.jpg');

B=floor(double(A)/64)*85;

imshow(B/255);

Picture1

Picture2

Question 1: Method 2: Convert images to images with only 64 colours

A=imread('picture1.jpg');

B=floor((double(A)+42)/85)*85;

imshow(B/256);

Picture1

Picture2

Question 2: Method 1: Convert images to images with only 27 colours
A=imread('picture1.jpg');
B=floor(double(A)/85)*128;
imshow(B/256);
Picture1

Picture2

Question 2: Method 2: Convert images to images with only 27 colours

A=imread('picture1.jpg');

B=floor((double(A)+64)/128)*128;

imshow(B/256);

Picture1

Picture2

Question 3: Convert images to greyscale images
A=imread('picture1.jpg');
B=(A(:,:,1)+A(:,:,2)+A(:,:,3))/3;
imshow(B);

Picture1

Picture2

Question 4: Greyscale image with only 64 intensity values
A=imread('picture1.jpg');

B=(A(:,:,1)+A(:,:,2)+A(:,:,3))/3;
C=floor(B/4)*4;
imshow(C);

Picture1: is very faint!

Picture2: gave me a white image only!

Question 5: Greyscale image with only 16 intensity values

A=imread('picture1.jpg');

B=(A(:,:,1)+A(:,:,2)+A(:,:,3))/3;

CC=floor(B/16)*16;

imshow(CC);

Picture 1

Picture2 Very faint image.