Title :
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
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;
Journal_Title :
Image Processing, IEEE Transactions on
DOI :
10.1109/TIP.2008.2007049
