T.M. Goodman, National Physical Laboratory, UK
This chapter discusses the internationally recognised systems and conventions that underpin colorimetry. These provide a framework for the communication and specification of colour, and for the evaluation of colour matches, colour differences and colour appearance.
standard colorimetric observer
Colour is a perception, not a physical property of a material, light source or other artefact, and therefore cannot be quantified in purely physical terms. Thus colorimetry (the measurement of colours) ...