Ehsan Miandji

1 Introduction Accurate and reliable measurements of an object's appearance are crucial in modern computer graphics, especially for applications involving photo-realistic and predictive rendering [WWMC]. These applications require highly precise image synthesis, relying on physically-based reflection models to ensure the fidelity of rendered appearances.

1. Introduction Accurate capture, representation, and reproduction of the appearance of real-world materials is fundamental to photorealistic rendering in computer graphics. The bidirectional reflectance distribution function (BRDF) [Nic65] describes how light interacts with and is scattered at surfaces in a scene, determining its appearance under varying illumination and viewing conditions.

Nyckelord: NATURVETENSKAP; NATURAL SCIENCES; Sammanfattning: Recent developments in computer graphics, and particularly within predictive rendering, have enabled highly realistic simulations of object appearances. While physically-based reflectance (PBR) models offer widespread utility, measured material reflectance data yields significantly higher accuracy through the direct empirical observation of complex light-scattering interactions.