… to modify a standard ray tracer to handle non constant refractive indices. For each ray in the
ray trace tree, we first compute the closest intersection of the ray with a surface bounding the …

… first describe the analytic ray formulation and the ray tracing algorithm for … non-constant
refractive media. Then we extend the algorithm to handle general non-constant refractive media …

… We validate the accuracy and convergence of our ray tracer on media profiles with analytic
solutions (defined in Section 3.1), and we demonstrate the performance and applications on …

… We use this section to present the theory of nonlinear ray tracing within media with
continuously-varying refractive index, and the adjoint state method for differentiating objectives …

… Finally, nonlinear ray tracing can be used to simulate the continuous refraction in a medium
… Typically, a varying index of refraction is caused by a non-constant density of air, for example …

… A flow is vortex-free exactly when there are (necessarily spacelike) orthogonal hypersurfaces
to the matter world-lines [3], ie when (locally) there exists a non-constant scalar t such that …

The numerical solution of ray tracing problems in complex 3D media is considered in this
paper that reviews some of the work and applications in which the author and his collaborators …

… bidirectional path tracing. Our technique enables path tracing estimators such as particle
tracing, … When performing non-linear ray tracing inside a heterogeneous refractive medium, it is …

… deformations are modeled by nonlinear ray tracing. The deflection of rays is influenced by 2D
and 3D … As our work depends on non-linear ray tracing, we bend the rays in the foreground …

… In this paper, we describe a method of curved ray tracing for … As example applications, the
method of curved ray tracing … their work on ray tracing in non-constant media. They do not …