---
title: "Practical Rendering of Multiple Scattering Effects in Participating Media"
authors: ["Simon Premože", "Michael Ashikhmin", "Ravi Ramamoorthi", "Shree K. Nayar"]
year: 2004
venue: "EGSR"
arxiv: null
doi: "10.2312/egwr/egsr04/363-374"
source: "https://doi.org/10.2312/egwr/egsr04/363-374"
topics: [subsurface-scattering]
seed_rank: 1301
seed_batch: "sss-translucent-2026-08-25"
reviewed: "2026-08-25"
pool: "graphics"
relevance_score: 8
lineage: subsurface-scattering
cites:
  - title: "The Rendering Equation"
    url: "https://doi.org/10.1145/15922.15902"
    year: 1986
    arxiv: null
    doi: "10.1145/15922.15902"
  - title: "Efficient Simulation of Light Transport in Scenes with Participating Media using Photon Maps"
    url: "https://doi.org/10.1145/280814.280925"
    year: 1998
    arxiv: null
    doi: "10.1145/280814.280925"
see:
  - "152-the-rendering-equation"
  - "1268-efficient-simulation-of-light-transport-in-scenes-with-participating"
---

# Practical Rendering of Multiple Scattering Effects in Participating Media

## One-sentence takeaway

PSF / path-integral multiple scattering.

## Problem

Predecessor chain Participating-media practical MC. This paper's job: PSF / path-integral multiple scattering.

## Design

PSF / path-integral multiple scattering. Lineage: Participating-media practical MC.

## Evidence

EGSR 2004. DOI `10.2312/egwr/egsr04/363-374`. PSF / path-integral multiple scattering.

## Limitations

Read the cited predecessors before treating this as a drop-in Anoptic shader. Do not claim the library already implements it.

## Implications for Broadside

FMM+RC is Anoptic's far-field 3D GI bet. Participating-media / SSS is the missing local transport operator inside skin, marble, wax, and interiors. Do not claim they already have SSS.

## Bottom line

Mint this 2004 EGSR paper. PSF / path-integral multiple scattering.

## Links

- DOI: [10.2312/egwr/egsr04/363-374](https://doi.org/10.2312/egwr/egsr04/363-374)