Spatial bandwidth extended reconstruction for digital color Fresnel holograms.
Opt Express
; 17(11): 9145-56, 2009 May 25.
Article
em En
| MEDLINE
| ID: mdl-19466163
ABSTRACT
This paper presents a reconstruction algorithm based on the convolution formula of diffraction which uses the Fresnel impulse response of free space propagation. The bandwidth of the reconstructing convolution kernel is extended to the one of the object in order to allow the direct reconstruction of objects with size quite larger than the recording area. The spatial bandwidth extension is made possible by the use of a numerical spherical wave as a virtual reconstructing wave, thus modifying the virtual reconstruction distance and increasing the kernel bandwidth. Experimental results confirm the suitability of the proposed method in the case of the simultaneous recording of two-color digital holograms by using a spatial color multiplexing scheme.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Refratometria
/
Algoritmos
/
Holografia
/
Interpretação de Imagem Assistida por Computador
/
Aumento da Imagem
/
Colorimetria
/
Imageamento Tridimensional
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article