Real-time Rendering and Editing of Scattering Effects for Translucent Objects

TL;DR

This paper presents a real-time rendering and editing method for translucent objects that achieves photorealistic effects by decomposing scattering functions and compressing radiative transfer data, enabling efficient and realistic visualization.

Contribution

It introduces a novel real-time rendering framework based on BSSRDF Dipole approximation with material editing and quadratic wavelet compression for efficient translucent object visualization.

Findings

Achieves photorealistic translucent effects in real-time

Enables dynamic editing of translucent materials under various lighting

Significantly compresses radiative transfer data without quality loss

Abstract

The photorealistic rendering of the transparent effect of translucent objects is a hot research topic in recent years. A real-time photorealistic rendering and material dynamic editing method for the diffuse scattering effect of translucent objects is proposed based on the bidirectional surface scattering reflectance function's (BSSRDF) Dipole approximation. The diffuse scattering material function in the Dipo le approximation is decomposed into the product form of the shape-related function and the translucent material-related function through principal component analysis; using this decomposition representation, under the real-time photorealistic rendering framework of pre-radiative transmission and the scattering transmission to realize real-time editing of translucent object materials under various light sources. In addition, a method for quadratic wavelet compression of precomputed radiative transfer data in the spatial domain is also proposed. Using the correlation of surface points in the spatial distribution position, on the premise of ensuring the rendering quality, the data is greatly compressed and the rendering is efficiently improved. The experimental results show that the method in this paper can generate a highly realistic translucent effect and ensure the real-time rendering speed.