Chapter 17. Image Representation and Manipulation

17.1. Introduction

Digital imagery appears in all forms of media today. Although most of these images are digital photos or other types of 2D pictures that have been loaded or scanned into a computer, an increasing number of them are generated in 3D using sophisticated modeling and rendering software. Accompanying this trend is a large number of image formats, most of which are interconvertible (albeit with some loss of fidelity). Images in each format have limitations, especially in their ability to represent wide ranges of intensity; as a result, new formats for high dynamic range (HDR) images have also evolved. Because most images come from digital cameras, it’s natural to think of each pixel ...

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