Abstract
This paper introduces the two-step process of the standard photon mapping algorithm and a variety of other global biased illumination algorithms using photon mapping that have been proposed in recent years. Since there are many global biased illumination algorithms based on photon mapping, this review is a combination of these algorithms for the convenience of the reader, and the two-step process of standard PM will also be presented in this review to accommodate readers who are not familiar with the field. We will first introduce the specific implementation process and principles based on the two steps of PM, photon tracking and rendering, and then introduce a variety of polarized illumination techniques using photon maps, compare these methods and discuss the advantages, disadvantages, and applicability of each method in detail, and finally give a specific implementation of each method to give readers a clearer understanding of these methods. The final implementation of each method is shown to give the reader a clearer understanding of these methods.
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