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

A fast method for edge-guided and structurally constrained full waveform inversion

A full-waveform inversion, structural constraint technology, applied in seismic signal processing and other directions, which can solve problems such as edge information and structural information ambiguity, model results and boundary damage.

Active Publication Date: 2017-05-31
UNIV OF SCI & TECH OF CHINA
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In view of this, the main purpose of the present invention is to provide a fast and effective full-waveform inversion method based on canny edge detection operator and bilateral filtering edge guidance and structural constraints, to solve the edge that conventional full-waveform inversion method exists The problem of fuzzy information and structural information, overcome the damage to the model results and boundaries during the denoising process, and enhance the structure and boundary information of the inversion results

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 fast method for edge-guided and structurally constrained full waveform inversion
  • A fast method for edge-guided and structurally constrained full waveform inversion
  • A fast method for edge-guided and structurally constrained full waveform inversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0127] Such as image 3 as shown, image 3 It is a flow chart of a fast method for full waveform inversion based on canny edge detection operator and bilateral filtering edge guidance and structural constraints according to an embodiment of the present invention, and the method includes the following steps:

[0128] First there is an initial velocity model m0:

[0129] The first step is to select the optimal inversion frequency, and read the initial model, inversion parameters and other parameters;

[0130] In the second step, the frequency (group) cycle is performed according to the set inversion frequency; the frequency (group) cycle is an iterative cycle;

[0131] The third step is to enter the iterative loop and read the shot data;

[0132] The fourth step is to use the velocity model and parameter forward modeling, in the frequency domain, to make a difference between the surface reception record and the actual shot record, and calculate the objective function value co...

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 discloses a quick full-waveform inversion method for edge guide and structural constraint. The edge of a model is detected by using a canny operator, namely, velocity and interface are inverted at the same time in full-waveform inversion, and then holding structural regularization and structure constraint regularization are carried out on the gradient of residual of the model through bilateral filtering. The problem that the edge information and structure information are fuzzy for a conventional full-waveform inversion method is solved. Moreover, damage to the model result and boundary in the high-noise de-noising process is overcome, and the inversion result structure and boundary information are enhanced.

Description

technical field [0001] The present invention relates to the technical field of seismic imaging and full waveform inversion, in particular to a fast full waveform inversion method based on canny edge detection operator and bilateral filtering edge guidance and structural constraints, wherein canny edge detection was developed by JohnF.Canny in 1986 A multi-level edge detection algorithm developed in 2010. Background technique [0002] The seismic inversion problem is to use the observed seismic data to determine the subsurface structure, which is closely related to the seismic positive problem. According to the information used in the inversion, the inversion methods can be divided into three categories: traveltime inversion, amplitude inversion, and full waveform inversion. The inversion results using the kinematic information of the wave field reflect the macroscopic characteristics of the larger-scale subsurface velocity model. For an ideal observation system, its resolut...

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): G01V1/28
Inventor 向世明张海江
Owner UNIV OF SCI & TECH OF CHINA
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