In the previous unit (Lesson 1.2) you were introduced to the principles of three-dimensionality. You explored the properties of three-dimensional features, especially in relation to cultural heritage and briefly discussed the three-dimensional perception and the cues that the human brain uses to comprehend 3D information from two-dimensional images. In this unit you will see different methods for capturing three-dimensional features and explore how different tools and methods have been used in cultural heritage to digitise and analyse material culture. The unit is divided into four lessons: 

2.1 Capturing Colour, Texture, and Geometry

This lesson provides an overview of the different tools and methods used to capture the three main three-dimensional elements: colour, texture, and geometry. As this lesson touches upon technical parameters and jargon you can skip it. It is not required to know any of this to understand the following lessons or sections. 

2.2 3D Scanning: Potential and Challenges

This lesson introduces you to non-contact 3D digitisation (i.e. 3D scanning) explaining the different types and principles of application and characteristic examples in cultural heritage.

2.3 From Xrays to Computed Tomography

This lesson touches upon two related methods, xray and computed tomography, which although were originally developed for medicine that are being used in heritage for over a century.

2.4 Spectral Imaging

This lesson explores spectral imaging, which uses the properties of the electromagnetic spectrum (light) and its interaction to enhance and reveal object details.

Before you delve into the different tools and methods for capturing three-dimensionality, take the quiz below to check your understanding of three-dimensionality and check how much you know about the different methods covered in this unit.

Quiz: Three-dimensionality. Principles, Tools, and Methods