1997
@inproceedings{NDM1997,
vgclass = {refpap},
author = {Noriko Nagata and Toshimasa Dobashi and Yoshitsugu Manabe
and Teruo Usami and Seiji Inokuchi},
title = {Modelling and Visualization for Pearl Quality Evaluation
Simulator},
booktitle = {The 10th Scandinavian Conference on Image Analysis},
address = {Lappeenranta, Finland},
pages = {165--172},
month = {June},
year = {1997},
abstract = {Visual simulation using CG and VR has attracted wide
attention in machine vision. This paper proposes a method of modeling
and visualizing pearls that will be the central technique of a pearl
quality evaluation simulator. Pearls manifest a very specific optical
phenomenon that is not dependent on the direction of the light source.
To investigate this feature, we propose a physical model for multilayer
film interference considering the multiple reflection in spherical
bodies. The rendering algorithm has been configured from such
representations of physical characteristics as interference, reflection
and texture which correspond respectively to the sense of depth,
brightness and grain that are the main evaluation factors obtained from
psychological experiments. Further, portions of photos of real pearls
and the images generated by the present method were evaluated based on
a scale of psychological evaluation of ``pearl-like quality''
demonstrating thereby that not merely the generated images as a whole
but the respective parts of images can present such a pearl-like
quality.},
}