首页|Redundant speckle elimination in digital holography with the Gauss window function
Redundant speckle elimination in digital holography with the Gauss window function
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NSTL
Elsevier
Digital Holography (DH) is a popular and practical technology for recording the complex-valued information of the object field. However, speckle, caused by the coherent light, greatly reduces the quality of the reconstructed image. In this paper, a speckle-suppression algorithm called Gauss speckle elimination mask (GSEM) that only needs a single-shot DH is proposed. This method utilizes the Gauss window function to extract the sub-holograms. Besides, the gray value compensation is proposed in this method for restoring the grayscale distribution. All sub -holograms are operated by the gray value compensation, then a new stack of sub-reconstructed images is acquired. The output compounded by this stack of sub-reconstructed images avoids the additional noise caused by the ringing effect. It could be shown in this paper that this method has a better performance in speckle-suppression while maintaining the image contrast.
Digital holographySpeckle suppressionImage filterNOISE-REDUCTIONIMPROVEMENTMICROSCOPY
NSTL
Elsevier
