This document discusses working with images. It defines what an image is and notes that working with images depends on the platform, graphics software, and graphics formats used. Traditional artists must understand their tools like paint and brushes, while modern artists rely on computer-based graphics software run on hardware platforms. Images can be stored in different formats. Working with images has applications in various fields like engineering, architecture, medicine for things like X-rays, and education for subjects like biology, physics, and chemistry.