.A modified aperture-synthesis method for super-resolution by a single digital hologram[J].Optoelectronics Letters,2010,6(5):392-395 |
A modified aperture-synthesis method for super-resolution by a single digital hologram |
冯少彤 |
Jiangsu Key Laboratory for Optoelectronic Technology, Nanjing Normal University; |
Abstract: |
A modified aperture-synthesis method is reported to improve the resolution of a reconstructed image in digital holography
by a single hologram. A series of sub-holograms incoherently overlapped on a CCD are recorded as a single aperture-synthesized
digital hologram. The angular division multiplexing is introduced to both the object and the reference path for holographic
recording. The final super-resolved image is obtained by synthesizing the several reconstructed images. In the experiment,
a two-dimensional transparent USAF resolution test target is used. The result demonstrates that the resolution of the reconstructed
image is improved from 16.00 lp/mm to 22.64 lp/mm in the horizontal direction. |
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