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Image enhancement method for lensless digital holography microscopy imaging

A technology of digital holographic microscopy and image enhancement, which is applied in the field of digital holography, can solve problems affecting the clarity and quality of reproduced images, and achieve good denoising effects, clear holographic images, and high efficiency

Active Publication Date: 2016-09-21
SHENZHEN INST OF ADVANCED TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0007] The purpose of the present invention is to solve the problem of affecting the clarity and quality of the reproduced image in the lensless digital holographic microscopic imaging process

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  • Image enhancement method for lensless digital holography microscopy imaging
  • Image enhancement method for lensless digital holography microscopy imaging
  • Image enhancement method for lensless digital holography microscopy imaging

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Embodiment Construction

[0014] In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0015] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terminology used herein in the description of the present invention is only for the purpose of describing specific embodiments, and is not intended to limit the present invention. As used herein, the term "and / or" includes any and all combinations of one or more of th...

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Abstract

The invention provides an image enhancement method for lensless digital holography microscopy imaging. The image enhancement method comprises the following steps of representing a holographic image through diffraction; removing the zero-level spot of the holographic image; restoring a phase result from a TIE method which is restored based on a gaussian process, enabling the phase result to be used as an initial phase value of the iterative algorithm, and then carrying out phase retrieval by using a hybrid input / output iterative algorithm so as to remove the conjugate image; carrying out preprocessing on the noise image by adopting a neighborhood average filtering algorithm, then performing secondary denoising on the processed image by adopting a partial differential equation of a total variation model to remove the speckle noise and finally to obtain the de-noised holographic image. The mage enhancement method and apparatus provided by the invention have a good de-noising effect, high efficiency and capability of obtaining the clear holographic image.

Description

technical field [0001] The invention relates to the technical field of digital holography, in particular to an image enhancement method for lensless digital holographic microscopic imaging. Background technique [0002] Due to the limitations of the size and resolution of existing optoelectronic devices, speckle noise, zero-order diffraction spots and conjugate images have a serious adverse effect on the imaging quality and clarity of the reconstructed image during hologram reconstruction. [0003] At present, the traditional image enhancement methods are mainly aimed at a relatively single noise source, and it is difficult to solve the multi-noise problem of lensless digital holographic microscopic imaging. For example, the methods of removing speckle noise include pre-optical and post-image processing. The principle of optical method to suppress speckle noise is to use various optical devices to obtain multiple independent speckle patterns, and then superimpose these image...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03H1/32
CPCG03H1/32
Inventor 秦文健万力超辜嘉
Owner SHENZHEN INST OF ADVANCED TECH
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