Tsinghua University Press Ltd. - Estimating illumination parameters using spherical harmonics coefficients in frequency space

Author(s): Feng Xie ; Linmi Tao ; Guangyou Xu
Publisher: Tsinghua University Press Ltd.
Publication Date: 1 February 2007
Volume: 12
Page(s): 44 - 50
ISSN (Electronic): 1007-0214
DOI: 10.1016/S1007-0214(07)70007-X

An algorithm is presented for estimating the direction and strength of point light with the strength of ambient illumination. Existing approaches evaluate these illumination parameters directly in... View More