  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.
