CPSC 815 Special Effects Production
Fall 2000
TTh 12:30--1:45 Rhodes 312
Project 4
<http://www.vr.clemson.edu/~andrewd/courses/cpsc815/fall00/hw/proj4.html>

Objectives:

• To learn the Discrete Wavelet Transform (DWT) and explore some issues involved in image compression.

Motivation:

• This project involves programming the DWT (decomposition and reconstruction). Issues include pyramidal image representation and thresholding of wavelet coefficients.

Due dates:

Project writeup (Image DWT tool): 10/31/00

Description:

• Implement a DWT tool in your image manipulation program, including image decomposition, coefficient filtering, and reconstruction. The user should be able to:
  • control the levels of decompositions (1 to log(n) for n x n images).
  • select the thresholding parameter for coefficient filtering (0% - 100%). This is similar to a quality metric, where 0% filtering implies perfect reconstruction of the image, and 100% filtering gives the lowest level of decomposition (or vice versa).
  During interaction with the DWT tool, the user should be presented with a temporary display of the transformed image. The user should be able to save this image or simply dismiss it.

Notes, suggestions, and additional requirements:

• For the program, as in the previous assignment, the use of a good toolkit is recommended (such as gtk). The following interaction mechanisms should be made available to the user:
  • the user needs to be able to manipulate the level of DWT decomposition
  • the user needs to be able to adjust the level of coefficient decimation (filtering)

What to hand in:

``Professional-quality'' brief writeup, including:

1. Cover page containing: Course Id--Section No.
   Name:
   Assignment No.
   
2. Assignment description
3. Screenshots of the program, including the GUI control and image windows
4. Sample images

Electronic submission of images: provide a URL (web address) to your on-line presentation of the assignment. To keep the page size manageable, please use reduced images on your web page, but provide links to the full-scale example images.