Face relighting based on virtual irradiance sphere and reflection coefficient

Heechul Han, Kwanghoon Sohn

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


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.

Original languageEnglish
Article number027204
JournalOptical Engineering
Issue number2
Publication statusPublished - 2008 Feb 1

Bibliographical note

Funding Information:
This work was supported by the Korea Science and Engineering Foundation (KOSEF) through the Biometrics Engineering Research Center (BERC) at Yonsei University.

Publisher Copyright:
© 2008 Society of Photo-Optical Instrumentation Engineers.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics
  • Engineering(all)


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