Unlock instant, AI-driven research and patent intelligence for your innovation.

Tomographic reconstruction method using matching pursuit

A tomography and matching tracking technology, applied in the field of tomography, can solve the problems of sparseness, large image artifacts, and the inability to fully reflect the real size of the field object, and achieve the effect of effective imaging and good noise immunity

Active Publication Date: 2019-12-06
TIANJIN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the solution obtained by the L2 regularization method will appear too smooth, and the resulting image will have large artifacts; while the L1 regularization solution for the field with smooth object distribution will appear too sparse, and cannot fully reflect the field objects. real size

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
  • Tomographic reconstruction method using matching pursuit
  • Tomographic reconstruction method using matching pursuit
  • Tomographic reconstruction method using matching pursuit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The tomography method based on compressive sensing theory is based on the electrical resistance tomography data, and the method based on the compressive sensing theory is applied to solve the image imaging problem of electrical resistance tomography. Compared with traditional imaging methods, this method can perform fast and accurate imaging, and has good anti-noise performance. The following detailed description of the steps of the present invention is intended to be described as an embodiment of the present invention, and is not the only form that can be manufactured or utilized. Other embodiments that can achieve the same function should also be included in the scope of the present invention.

[0033] Preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0034] Using the tomographic reconstruction method of matching pursuit, taking the image reconstruction problem Y=Ax of electrical resistanc...

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 relates to a tomography reconstruction method applying matching tracking. The method includes the steps of carrying out initialization; solving for x in an equation Y=Ax in an image reconstruction process through an iterative method; calculating an error for an element aj of each sensitivity matrix A; updating a support base set; iteratively updating; updating the residual; obtaining xk after the iterations, that is, the value of each pixel point in the image; and obtaining a convex envelope curve for a point set having a solution in the image, with points in an outer envelope curve being the region where a dispersed phase exists, and on this basis, obtaining a final image.

Description

technical field [0001] The invention belongs to the field of tomography imaging, and relates to a tomography reconstruction method using a matching pursuit algorithm, which is used in the tomography image reconstruction process. [0002] technical background [0003] Tomography constructs a physical sensitive field in the measured area, detects the change of the boundary response of the physical field caused by the change of the medium distribution in the measured area, and uses the change data to perform inversion calculation, thereby describing the Media distribution, velocity distribution, temperature distribution and other information. [0004] The image reconstruction process of tomography is the process of inverting the internal changes of the measured area from the measured boundary distribution of the physical field. Its expression is: Y=Ax, where Y represents the measured value of the physical field boundary, x represents the distribution of the medium inside the me...

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): G06T11/00
CPCG06T11/003G06T2211/424
Inventor 谭超张潍董峰
Owner TIANJIN UNIV