Digital Image Processing

Homework 4, Due 2011/5/24

Problem 1

Blurring prior to resizing

Write a program to blur and then resize the image. (Figure 4.17, Page 253)

(a) Resize the image to 50% of its original size using the resizing method in Exercise 1 of Lab 1.

(b) Blur the image with a 3*3 averaging filter using the Averaging Filter in Lab 3, and then resize the image to 50% of its original size using the resizing method in Exercise 1 of Lab 1.

Fig0417(a).bmp

Problem 2

Show the spectrum and phase

Write a program to perform to show the spectrum and phase of a rotated rectangle. (Figure 4.25(c), Page 269)

(a) Rotate the rectangle using the result of Problem 2 in Homework 2.

(b) Show the spectrum and phase.

Fig0424(a).bmp

ftp your homework to

ftp://csc551@140.127.208.211/

in the directory \HW4

by the following format:

檔案名稱：hw#_學號.zip

例如：資工同學，作業4

檔案名稱：hw4_a09755xx.zip.  (注意：檔案名稱不能有中文)

The password is given in class.