This program allows users test different JPEG compression methods.

We recommend installing OpenJDK 8 or higher versions of Java.

You may find the detailed help page here.

Download and extract the archived file. On the root folder, please run the following command:

> appletviewer Ijpeg.html
                

Then the program will start running. Choose one of the quantization method, and click the SUBMIT button. Then, the program will display the results.

Also, you can click on the image, and the program will display the quantization block.

You can test this with different images. To change the image, please open Ijpeg.html file, locate the following line:

<PARAM NAME=image VALUE="parrots2.gif">
                

Please change the value attribute for other images.

For example, change the value attribute to forestfire.jpg and restart the program, you will see a different image.