Colour Measurement and Its Application

Introduction

Colour measurement is more than a technical skill; it is a science deeply connected to aesthetic values and industrial processes. Since the 20th century, the need for accurate colour measurement has led to remarkable scientific breakthroughs. D. Patterson's "Review of Progress in Coloration and Related Topics" offers a clear overview of these developments from the early 20th century to the early 1980s. This article lays out the historical foundations, examines technological advances, and reflects on the enduring challenges in the field of colour measurement (Patterson, 1984).

History and Early Developments

In 1931, an important milestone occurred when the CIE introduced a standardised system for colour measurement. Although theoretically refined, the practical instruments needed to apply these standards efficiently on a broader scale were lacking at the time. Initially, only a few specialised research institutions, such as the Massachusetts Institute of Technology, were able to make substantial progress in developing early colour measurement instruments such as the Hardy-General Electric Recording Spectrophotometer (Patterson, 1984, p.1).

Advances in Colour Measurement Technology

The distinction between absorption spectrophotometry and reflectance spectrophotometry marks important technological advances in the way colour is measured in different materials. The former, applied to transparent materials, made use of the Lambert and Beer laws, known as early as 1852. Thanks to innovations after the Second World War, researchers were able to benefit from improved photodetectors to carry out accurate measurements (Patterson, 1984, p.1).