Abstract
We propose a new correction method for the splicing dislocation of
sub-holograms in synthetic aperture digital holography. By adjusting the splicing
distances between sub-holograms during the numerical reconstruction process using
the convolution approach, the influence of non-paraxial aberration for the quality
of the synthetic reconstructed image is avoided and synthetic reconstructed images
corresponding to different splicing distances are obtained. Then, the accurate
splicing distance between sub-holograms is determined by evaluating the quality of
the corresponding synthetic reconstructed images. Accurate correction for the
splicing dislocation of sub-holograms is achieved and high-quality reconstructed
images without nonparaxial aberration are obtained.
© 2012 Chinese Optics Letters
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