Zobrazeno 1 - 10
of 26
pro vyhledávání: '"Julianna Kostencka"'
Publikováno v:
Applied optics. 57(1)
This paper proposes a measurement method of focusing objects with a high gradient shape of a small and large radius of curvature. The measurements are carried out on a Fourier digital holographic microscope with optimized illumination conditions maxi
Publikováno v:
Optics express. 25(20)
A hybrid system of holographic tomography, which utilizes rotation of a sample and two-directional, off-axis illumination is proposed. The applied type of illumination brings two major benefits. First, it offers theoretical potential for the resoluti
Publikováno v:
Optical Measurement Systems for Industrial Inspection X.
In this contribution, we propose a method of digital holographic microscopy (DHM) that enables measurement of high numerical aperture spherical and aspherical microstructures of both concave and convex shapes. The proposed method utilizes reflection
Publikováno v:
Optical Measurement Systems for Industrial Inspection X.
Holographic tomography (HT) allows noninvasive, quantitative, 3D imaging of transparent microobjects, such as living biological cells and fiber optics elements. The technique is based on acquisition of multiple scattered fields for various sample per
Publikováno v:
Digital Holography and Three-Dimensional Imaging.
We investigate a new holographic contouring technique for digital holographic microscopy with several illumination directions of a sample. The proposed approach enables extending the unambiguous measurement range and improving accuracy.
Problems and Solutions in 3-D Analysis of Phase Biological Objects by Optical Diffraction Tomography
Autor:
Arkadiusz Kus, Julianna Kostencka, Wojciech Krauze, Björn Kemper, Michał Dudek, Malgorzata Kujawinska, Tomasz Kozacki
Publikováno v:
International Journal of Optomechatronics. 8:357-372
Optical Diffraction Tomography is a technique for retrieving a 3-dimensional refractive index distribution from phase objects without destroying the structure of the samples. In the article we discuss the selection and implementation of full and limi
Publikováno v:
Optics & Laser Technology. 49:38-46
This paper presents an analysis of the topography characterization of a tilted sample by interferometric measurement systems in transmission and reflection configurations. The developed analytical expressions permit the direct reconstruction of the t
Publikováno v:
Optics Communications. 297:20-26
A rapid autofocusing technique is a fundamental element for a vast range of applications of digital holography. In this paper we propose a new autofocusing method that permits to detect a tilted optimal focus plane. The method is based on estimation
Autor:
Tomasz Kozacki, Julianna Kostencka
Publikováno v:
SPIE Proceedings.
Filtered back propagation (FBPP) is a well-established reconstruction technique that is used in diffractive holographic tomography. The great advantage of the algorithm is the space-domain implementation, which enables avoiding the error-prone interp
Autor:
Tomasz Kozacki, Julianna Kostencka
Publikováno v:
SPIE Proceedings.
Optical diffraction tomography (ODT) is a non-invasive method for quantitative measurement of micrometre-sized samples. In ODT a series of multiple holograms captured for various illumination directions with respect to a sample is processed using a t