%0 Conference Article %T Synthesis methods for realistic images of three-dimensional scenes containing media with a refractive index gradient %A Zhdanov, D.D. %A Potemin, I.S. %A Zhdanov, A.D. %A Galaktionov, V.A. %A Garbul, A.A. %K ray tracing, gradient medium, Runge-Kutta method, rendering, photon maps %J International Conference "Computing for Physics and Technology - CPT2020" %D 2025 %P 5 %I ANO "Scientific and Research Center for Information in Physics and Technique"