TitleEnhanced three-dimensional deconvolution microscopy using a measured depth-varying point-spread function.
Publication TypeJournal Article
Year of Publication2007
AuthorsShaevitz, JW, Fletcher, DA
JournalJ Opt Soc Am A Opt Image Sci Vis
Volume24
Issue9
Pagination2622-7
Date Published2007 Sep
KeywordsAlgorithms, Artifacts, Image Enhancement, Image Processing, Computer-Assisted, Imaging, Three-Dimensional, Microscopy, Fluorescence
Abstract

We present a technique to systematically measure the change in the blurring function of an optical microscope with distance between the source and the coverglass (the depth) and demonstrate its utility in three-dimensional (3D) deconvolution. By controlling the axial positions of the microscope stage and an optically trapped bead independently, we can record the 3D blurring function at different depths. We find that the peak intensity collected from a single bead decreases with depth and that the width of the axial, but not the lateral, profile increases with depth. We present simple convolution and deconvolution algorithms that use the full depth-varying point-spread functions and use these to demonstrate a reduction of elongation artifacts in a reconstructed image of a 2 microm sphere.

Alternate JournalJ Opt Soc Am A Opt Image Sci Vis