Digital Image Interactive Demo

A set of Java applications each of which an interactive demonstration application on digital image properties or processing

Developed in 2006 to 2009

Copyright (C) 2009 - Andrew Kwok-Fai Lui

The Open University of Hong Kong

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, see http://www.gnu.org/licenses/.

Introduction

There are 4 interactive demo applications included in this package

1. Image Processing Demo Platform (faifai.image.SimpleImageProcessor)
2. Rotation and Hole Demo (faifai.image.RotationHoleDemo)
3. Aliasing and Low Pass Demo (faifai.image.LowPassDemo)
4. JPEG File Quality Demo (faifai.image.JPEGFileQualityDemo)

Running the Applications

Pre-requisites

1. Java JRE 1.8 or above

Running the Applications Through the Launcher

A launcher application ApplicationLauncher.class is provided for running each of the 4 applications.

1. Download the repository to a folder, assuming that it is /app/DMImageDemo. The Java classes are found in the bin folder.
2. Execute ApplicationLauncher.class insider the folder

cd /app/DMImageDemo

java -cp "./bin" ApplicationLauncher

Running Individual Application

Alternatively, each of the 5 applications can be executed from their main classes (as in the above list).

cd /app/DMImageDemo

java -cp "./bin" faifai.image.SimpleImageProcessor

Overview of the Applications

Image Processing Demo Platform

Class: faifai.image.SimpleImageProcessor

• Provide loading of sample images or custom image files
• Support image processing operations such as warm, chill, roughen, rotation, posterize, greyscale

Rotation and Hole Demo

Class: faifai.image.RotationHoleDemo

• Demo the difference between forward mapping and backward mapping.
• Show the hole effect
• Demo supersampling methods

Aliasing and Low Pass Demo

Class: faifai.image.LowPassDemo

• Demo the removal of high frequency signal from images with a low-pass filter.

JPEG File Quality Demo

Class: faifai.image.JPEGFileQualityDemo

• Demo the file size reduction and the quality of JPEG images.