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Image edge extraction method and system based on surface plasmon spatial light field differentiator

A surface plasmon and space light field technology, applied in optics, instruments, optical components, etc., can solve problems such as difficult integration, complex structure, and large size, and achieve easy integration, simple device structure design, and low power consumption Effect

Active Publication Date: 2017-06-20
ZHEJIANG UNIV
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Problems solved by technology

[0004] In view of the shortcomings of the above-mentioned technologies, such as large size, difficult integration, complex structure, and difficult preparation, the present invention proposes an image edge extraction method and system based on a surface plasmon space light field differentiator

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  • Image edge extraction method and system based on surface plasmon spatial light field differentiator
  • Image edge extraction method and system based on surface plasmon spatial light field differentiator
  • Image edge extraction method and system based on surface plasmon spatial light field differentiator

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Embodiment Construction

[0022] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0023] Such as figure 1 Shown is an embodiment of an image edge extraction system based on a surface plasmon spatial light field differentiator, including: an image information loading system, a spatial light field differential system and an image receiving system. The output of the image information loading system is connected with the input of the space light field differential system, and the output of the space light field differential system is connected with the image receiving system.

[0024] The image information loading system includes an adjustable laser, a spatial light modulator, and a coherent imagin...

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Abstract

The invention discloses an image edge extraction method and system based on a surface plasmon spatial light field differentiator. The conventional Fourier optical information processing is based on a lens system, wherein the lens system is large in structural size, and is not liable to be integrated. According to the invention, the surface plasmon spatial light field differentiator is designed, and the surface plasmon spatial light field differentiator is simple in design, wherein the thickness of the surface plasmon spatial light field differentiator is at a nanometer scale. The surface plasmon spatial light field differentiator is easy for large-scale preparation, can be integrated with a silicon-based device, and thereby achieves the processing of the image edge. The method comprises the steps: exciting the surface plasmon on a metal and medium interface based on the characteristics of a metal surface plasmon, controlling the spatial propagation leakage rate and the attenuation rate caused by the material loss to meet a critical coupling condition, and achieving the first-order differential processing of an inputted spatial light field, thereby completing the edge extraction of an input image. The edge extraction method provided by the invention is a superfast, real-time and large-flux image processing method, and is good in application prospect for medical and satellite image processing.

Description

technical field [0001] The invention relates to the field of optical information processing, in particular to an image edge extraction method and system based on a surface plasmon space light field differentiator. Background technique [0002] With the rapid development of information technology, the demand for information processing performance is constantly increasing. Compared with the information processing methods of traditional electronic devices, optical information processing technology has gradually developed into an important information processing method by virtue of its advantages of high speed, ultra-large bandwidth, and low loss. Traditional Fourier optical information processing utilizes the Fourier transform characteristics of the lens to form a 4f system through two lenses, select a suitable spatial filter on its spectrum plane, and perform light field simulation operations to realize image processing. Among them, the use of spatial light field differential...

Claims

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Application Information

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IPC IPC(8): G02B5/00
CPCG02B5/008
Inventor 阮智超朱腾峰周祎晗
Owner ZHEJIANG UNIV
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