Hi

I have to develop a feature in my application which enables modifying an jpeg image and saving it.

This feature is launched from one of the existing screens in my project

Let me divide this task
1. Open an existing jpeg image. This should be displayed on LCD (640x480)
2. Modify the jpeg image using stylus (Touch Screen is integrated)
3. Save the modified image

What are the steps involved? How should I proceed?

-Thanks in advance