CSE 272 : Assignment 4
نویسنده
چکیده
While lights are often described by their origin and orientation in computer graphics, lights in the real world have particular states of vibration because lights are electromagnetic waves. Such state of vibration is called polarization state. Although human eyes cannot detect polarization state, sometimes lights behave differently according to their polarization states, which may be detected by human eyes. In this paper, we describe how to incorporate tracking of polarization states into conventional ray tracing. We propose direct tracking of polarization states, which uses two harmonic oscillations to describe polarization state. As applications of tracking of polarization states, we present how to render thin-film interference and birefringence. We show our direct tracking method is easy to be applied for thin-film interference compared to Stokes vector, which is one of the popular ways to describe polarization states in the field of optics. As for birefringence, we propose a method to calculate a refraction vector inside birefringent materials based on Huygens’ principle. Our results suggest dealing with polarization is important for truly accurate image synthesis.
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تاریخ انتشار 2011