Adaptive multi-focus restoration method based on plankton digital holographic images

A plankton and digital holography technology, applied in the field of image processing, can solve the problems of unavoidable image noise and the influence of reconstructed images, and achieve the effect of monitoring quantity changes and simplifying engineering quantities.

Active Publication Date: 2021-03-19
OCEAN UNIV OF CHINA
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Problems solved by technology

However, like other images, image noise is inevitable during the acquisition and transmission of digital holograms, and holograms are disturbed by noise, and their reconstructed images will inevitably be adversely affected.

Method used

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  • Adaptive multi-focus restoration method based on plankton digital holographic images
  • Adaptive multi-focus restoration method based on plankton digital holographic images
  • Adaptive multi-focus restoration method based on plankton digital holographic images

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Embodiment Construction

[0039] The embodiment of the present invention will be explained in detail below in conjunction with the accompanying drawings. The examples given are only for the purpose of illustration, and cannot be interpreted as limiting the present invention. The accompanying drawings are only for reference and description, and do not constitute the scope of patent protection of the present invention. limitations, since many changes may be made in the invention without departing from the spirit and scope of the invention.

[0040] In order to obtain a relatively clear digital holographic image of plankton, an embodiment of the present invention provides an adaptive multi-focus restoration method based on a digital holographic image of plankton, the steps of which are as follows figure 1 As shown, steps S1-S5 are included.

[0041] (1) Step S1

[0042] S1. Digital holographic in-situ shooting of underwater plankton to obtain in-situ images.

[0043] In step S1, a plurality of in-situ i...

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Abstract

The invention relates to the technical field of image processing, and particularly discloses an adaptive multi-focus restoration method based on plankton digital holographic images, which comprises the following steps of: shooting a holographic in-situ image, reconstructing the in-situ image, and performing edge detection and threshold segmentation on the reconstructed image to obtain contour information of plankton in the reconstructed image; and cutting the reconstructed image data set according to the contour information to obtain a target image data set, generating a definition index basedon the gradient and variance of the target image, screening the clewest target image based on the definition index, and splicing the clewest target image to the in-situ image according to the original coordinates to obtain the target image. According to the invention, a clear image of plankton can be extracted, a huge data processing problem existing in an acquisition system is effectively solved, the work amount of marine plankton detection is effectively simplified, and then the plankton quantity change is effectively monitored so as to forecast disasters such as red tide and the like.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to an adaptive multi-focus restoration method based on plankton digital holographic images. Background technique [0002] The marine ecosystem is a complex and changeable large system, especially under the background of the current rapid development of the marine economy, the marine ecosystem is affected by various human activities and natural factors, such as environmental pollution, overfishing, etc. On the other hand, , Various changes in the marine ecosystem will also have a negative effect on human development and utilization of the ocean, so it is particularly important to monitor the marine ecosystem in real time and effectively. [0003] In the marine ecosystem and structure, plankton occupies an extremely important position, and its quantity change and spatial distribution will have an important impact on the functioning of the entire marine ecosystem and even glob...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T5/00G06T7/11G06T7/13G06T7/136
CPCG06T5/001G06T7/11G06T7/13G06T7/136Y02A40/81
Inventor 王楠崔燕妮杨学文辛国玲张兴胡文杰
Owner OCEAN UNIV OF CHINA
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