Face relighting based on virtual irradiance sphere and reflection coefficient

Heechul Han; Kwanghoon Sohn

doi:10.1117/1.2857451

1 February 2008 Face relighting based on virtual irradiance sphere and reflection coefficient

Heechul Han, Kwanghoon Sohn

Author Affiliations +

Optical Engineering, Vol. 47, Issue 2, 027204 (February 2008). https://doi.org/10.1117/1.2857451

Abstract

We present a novel method to estimate the light source direction and relight a face texture image of a single 3-D model under arbitrary unknown illumination conditions. We create a virtual irradiance sphere to detect the light source direction from a given illuminated texture image using both normal vector mapping and weighted bilinear interpolation. We then induce a relighting equation with estimated ambient and diffuse intensity. We provide the result of a series of experiments on light source estimation, relighting, and face recognition to show the efficiency and accuracy of the proposed method in restoring the shading and shadow areas of a face texture image. Our approach for face relighting can be used for illuminant-invariant face recognition applications.

©(2008) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Heechul Han and Kwanghoon Sohn "Face relighting based on virtual irradiance sphere and reflection coefficient," Optical Engineering 47(2), 027204 (1 February 2008). https://doi.org/10.1117/1.2857451

Published: 1 February 2008

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