Fourier optical modeling-based coded aperture camera image restoration method

A technology of encoding aperture and image restoration, applied in image enhancement, image analysis, image data processing and other directions, can solve the problems of image resolution effect, environmental noise, etc., and achieve high signal-to-noise ratio, Reduce the effect of cumbersome processes

Inactive Publication Date: 2016-09-07
TIANJIN UNIV
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] It can be seen that the current point spread function can be obtained by actual shooting measurement and interpolation methods. These methods are more or less based on real shoo

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
  • Fourier optical modeling-based coded aperture camera image restoration method
  • Fourier optical modeling-based coded aperture camera image restoration method
  • Fourier optical modeling-based coded aperture camera image restoration method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0081] The problem to be solved by the present invention is: overcome the dependence of the prior art on actual shooting, reduce the noise and error introduced by manual shooting, quantitatively analyze the imaging mode of the coding mask optical imaging system, and use the computer to simulate the ideal coding aperture camera at any depth The point spread function, and finally obtain the point spread function of the coded aperture camera, which is used as the prior data to restore the image.

[0082] The technical scheme adopted in the present invention is: a method for recovering an image of a coded aperture camera based on Fourier optical modeling comprises the following steps:

[0083] 1) Quantitatively analyze the encoding mask imaging system, and the system generates the simulated point spread function of the encoding aperture camera at any depth;

[0084] 2) Using the point spread function at each depth in step (1) as the blur kernel, deconvolve the scene imaging captur...

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 invention belongs to the digital image processing technical field and relates to a Fourier optical modeling-based coded aperture camera image restoration method. In order to decrease dependence on actual photographing and reduce noise error introduced by manual photographing, the imaging mode of a coded mask optical imaging system is quantitatively analyzed, and finally, the point spread function of a coded aperture camera can be obtained, and the point spread function is adopted as prior data to restore an image. According to the technical scheme of the invention, the Fourier optical modeling-based coded aperture camera image restoration method includes the following steps that: (1) a coded mask imaging system is quantitatively analyzed, and the coded mask imaging system generates a simulation point diffusion function of a coded aperture camera under arbitrary depths; and (2) with the point diffusion function under arbitrary depths in the step (1) adopted as a fuzzy kernel, de-convolution is performed on scene images photographed by the same coded aperture camera, and a simulation result is optimized according to a maximum posterior probability MAP principle, and the image of the original scene can be obtained. The Fourier optical modeling-based coded aperture camera image restoration method of the invention is mainly applied to digital image processing.

Description

technical field [0001] The invention belongs to digital image processing, and in particular relates to a method for obtaining a coded aperture diffraction point spread function through Fourier optical modeling and a method for obtaining clear imaging based on the point spread function. Background technique [0002] Coded mask imaging technology first originated in the detection and imaging of heavy particle rays such as X-rays. A coded mask with a certain pattern structure is used to modulate the heavy particle rays arriving at the detection system, and the detection results need to be matched with corresponding The image decoding technique of the original heavy particles is used to restore and image the radiation source scene of the original heavy particles (E.E.Fenimore, and T.M.Cannon, "Coded aperture imaging with uniformly redundant arrays," Appl Optics 17, 337-347(1978)). [0003] Today, coded mask imaging technology has been widely used in visible light imaging, infrar...

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
IPC IPC(8): G06T5/00
CPCG06T5/001G06T2207/10052G06T2207/20056
Inventor 汪清方浩宇杨敬钰张傲姜斌
Owner TIANJIN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap