The author discusses their exploration of light, color, and perception through spectral ray tracing, explaining the process of building cameras out of code and the fascinating concept of metamerism. They touch on how our eyes see color from a distribution of wavelengths, leading to the existence of non-spectral colors like magenta. The author also highlights cases where the wave-like properties of light influence the colors we see, such as dispersion and thin film interference. Spectral ray tracing considers the wave-like properties of light, offering a unique perspective on light transport. The author showcases some of their artworks generated through their hand-written spectral ray tracer.
https://larswander.com/writing/spectral-ray-tracing/