Improvements in Shape-From-Focus for Holographic Reconstructions With Regard to Focus Operators, Neighborhood-Size, and Height Value Interpolation

Author

Thelen, Andrea ; Frey, Susanne ; Hirsch, Sven ; Hering, Peter

Author_Institution

Caesar Found. Holography & Laser Technol. Group, Bonn

Volume

18

Issue

1

fYear

2009

Firstpage

151

Lastpage

157

Abstract

This paper presents a shape-from-focus method, which is improved with regard to the mathematical operator used for contrast measurement, the selection of the neighborhood size, surface refinement through interpolation, and surface postprocessing. Three-dimensional models of living human faces are presented with such a high resolution that single hairs are visible.

Keywords

holography; image reconstruction; image resolution; optical focusing; focus operators; height value interpolation; holographic reconstruction; human faces; neighborhood size; shape-from-focus method; surface postprocessing; surface refinement; three-dimensional models; 3-D reconstruction; Autofocusing; depth estimation; depth-from-focus; facial measurement; focus analysis; focus measure; focusing; holography; shape estimation; shape-from-focus; Algorithms; Artificial Intelligence; Holography; Image Enhancement; Image Interpretation, Computer-Assisted; Imaging, Three-Dimensional; Pattern Recognition, Automated; Reproducibility of Results; Sensitivity and Specificity;

fLanguage

English

Journal_Title

Image Processing, IEEE Transactions on

Publisher

ieee

ISSN

1057-7149

Type

jour

DOI

10.1109/TIP.2008.2007049

Filename

4685626