Chinese Optics Letters, 2020, 18 (6): 060901, Published Online: May. 9, 2020  

Use of focus stacking and SfM techniques in the process of registration of a small object hologram Download: 651次

Author Affiliations
1 Institute of Micromechanics and Photonics, Warsaw University of Technology, 02-525 Warsaw, Poland
2 Institute of Microelectronics and Optoelectronics, Warsaw University of Technology, 00-665 Warsaw, Poland
3 Geola Digital uab., Vilnius 03227, Lietuva
Abstract
In this Letter, a method for shape visualization of small objects (microscopic) in the form of a hologram is presented. It consists of a standard optical set-up for small object registration (i.e., stereoscopic or biological microscope). The focus stacking technique is used to obtain a series of images with increased depth of field and on them a shape reconstruction procedure (structure from motion, SfM) is made. With use of a dense cloud of points, a sequence of parallax-related images suitable for Geola’s digital holographic printing is generated. The holographic printer produces single-parallax holographic (full three-dimensional) images of real or virtual objects.

Sławomir Paśko, Marek Sutkowski, Ramunas Bakanas. Use of focus stacking and SfM techniques in the process of registration of a small object hologram[J]. Chinese Optics Letters, 2020, 18(6): 060901.

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