Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

A method for eliminating astigmatism of grating object imaging based on sequential image analysis

A sequential image and grating pair technology, which is applied in image analysis, image enhancement, image data processing, etc., can solve the problems of astigmatism in achromatic imaging and affect the imaging quality, so as to eliminate astigmatism and improve the imaging quality of objects Effect

Active Publication Date: 2021-02-05
GUANGXI UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This imaging system can be used for aiming, positioning and measuring the target object across obstacles, and for making new filter systems, etc., but its achromatic imaging is often accompanied by astigmatism, which seriously affects the imaging quality

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A method for eliminating astigmatism of grating object imaging based on sequential image analysis
  • A method for eliminating astigmatism of grating object imaging based on sequential image analysis
  • A method for eliminating astigmatism of grating object imaging based on sequential image analysis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0062] The present invention is described in detail below in conjunction with accompanying drawing:

[0063] Such as figure 1 As shown, a method for eliminating grating-to-object imaging astigmatism based on sequence image analysis includes the following steps:

[0064] (1) The CCD camera collects the sequence images on the diffraction light path formed by the light source passing through the dispersion grating at different grating spatial frequencies;

[0065] (2) Convert each frame of the collected sequence image into a grayscale image and perform normalization processing, and then perform adaptive median filtering to improve image quality, smooth noise, and protect image edge information, and then sharpen the image Edge function extraction;

[0066] (3) Based on the fitting model of the Boltzmann function, the horizontal and vertical edge spread function ESF of each frame is obtained, and the edge spread function ESF is differentially processed to obtain the line spread f...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The present invention discloses a method for eliminating astigmatism in imaging of an object by grating based on sequential image analysis. The method comprises the following steps of: collecting sequential images of imaging of an object by grating in different imaging conditions, employing an edge method to perform edge grey information extraction and median filtering of the collected image, obtaining a point spread function (PSF) corresponding to the edge image based on a Boltzmann function fitting model, utilizing the PSF to perform deconvolution reconstruction, and performing evaluation ofthe sequential image after reconstruction.

Description

technical field [0001] The invention relates to a method for processing the astigmatism of grating-to-object imaging, in particular to a method for eliminating the astigmatism of grating-to-object imaging based on sequential image analysis. Background technique [0002] Grating is an important and widely used optical element. It not only has the well-known dispersion and light splitting functions, but also has imaging functions. There are different types of grating imaging. Among them, the Talbot effect and Lau effect that reflect the self-imaging phenomenon of gratings discovered in the early years have been widely studied and applied, and another kind of imaging that is different from them - the study of double gratings on the dispersion imaging of objects Work is still in its infancy. This imaging makes the grating an imaging device for general objects like lenses and mirrors. Compared with traditional lens imaging, it has the advantage of lightness and lightness, which ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G02B27/00G06T5/00G06T5/10G06T7/00G06T7/13G06T7/44
CPCG02B27/0012G06T5/001G06T5/10G06T7/0002G06T2207/10004G06T2207/20032G06T2207/30168G06T7/13G06T7/44
Inventor 卢泉张卫平张泽昊石瑞宇
Owner GUANGXI UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com