电阻抗断层成像开源软件eidors3.8的使用方法_EIDORS资源-CSDN文库

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EIDORS Examples

To run these tutorials, you need to download and install EIDORS and then run this command in a matlab (or octave) session.

>>run /path/to/eidors3d/startup.m

EIDORS Image Reconstruction

EIDORS fwd_models

Create a simple 3D fwd_model structure

EIDORS has functions to create common FEM models.

% Create fwd models

% $Id: tutorial010a.m,v 1.1 2007/06/15 18:17:51 aadler Exp $

subplot(121);

% 2D Model

imdl_2d= mk_common_model('b2c',16);

show_fem(imdl_2d.fwd_model);

axis square

subplot(122);

% 3D Model

imdl_3d= mk_common_model('n3r2',16);

show_fem(imdl_3d.fwd_model);

axis square; view(-35,14);

%print -r75 -dpng tutorial010a.png;

Figure: output image showing 2D and 3D EIT finite element models. Electrodes are shown in green. Electrode #1 is light green.

Create a simple 3D fwd_model structure

Based on these FEM models, we can simulate data. This code simulates difference data for a pattern with two inhomogeneities.

% Simulate EIT data

% $Id: tutorial010b.m,v 1.1 2007/06/15 18:17:51 aadler Exp $

sim_img= eidors_obj('image', 'stimulation image');

sim_img.fwd_model= imdl_3d.fwd_model;

% set homogeneous conductivity and simulate

sim_img.elem_data= ones( size(sim_img.fwd_model.elems,1) ,1);

homg_data=fwd_solve( sim_img );

% set inhomogeneous conductivity and simulate

sim_img.elem_data([390,391,393,396,402,478,479,480,484,486, ...

664,665,666,667,668,670,671,672,676,677, ...

678,755,760,761])= 1.15;

sim_img.elem_data([318,319,321,324,330,439,440,441,445,447, ...

592,593,594,595,596,598,599,600,604,605, ...

606,716,721,722])= 0.8;

inh_data=fwd_solve( sim_img );

clf;subplot(211);

xax= 1:length(homg_data.meas);

hh= plotyy(xax,[homg_data.meas, inh_data.meas], ...

xax, homg_data.meas- inh_data.meas );

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2017-11-06

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