This document summarizes a presentation on digital image processing and analysis using Photoshop. It begins with an overview of digital image processing, defining digital images and their common file formats. It then discusses the two main tasks of digital image processing: improving images for human interpretation and processing images for storage, transmission and machine perception. Examples of applications in areas like image enhancement, GIS, astronomy and medicine are provided. The document then discusses using Photoshop for digital image processing and analysis, noting its limitations, before recommending open-source platforms like ImageJ that are better suited to the task.