How can I change the size of mesh element?

Dear all,

I have this code:

% hranice okolí
shape = [];
tmp = bwboundaries(binaryImage_okoli);
shape.thorax = tmp{1};
tmp = bwboundaries(leftLung);
tmp = bwboundaries(rightLung);
shape.leftLung = tmp{1};
shape.rightLung = tmp{1};
size(grayImage)
% interpolace hraničních bodů, fourier
Npts1 = 60;      % počet bodů interpolovaných hranic
Npts2 = 45;      % počet bodů interpolovaných hranic
Ncomps = 30;     % počet fourierových komponentů
shape.thorax = fourier_fit(fourier_fit(shape.thorax, Ncomps), linspace(0, 1, Npts1));
shape.leftLung = fourier_fit(fourier_fit(shape.leftLung, Ncomps), linspace(0, 1, Npts2));
shape.rightlung = fourier_fit(fourier_fit(shape.rightLung, Ncomps), linspace(0, 1, Npts2));
% visualize resulting boundaries
figure();
imshow(grayImage);
hold on
plot(shape.thorax(:,2), shape.thorax(:,1), 'o-b')
plot(shape.leftLung(:,2), shape.leftLung(:,1), 'o-g')
plot(shape.rightLung(:,2), shape.rightLung(:,1), 'o-r')
legend('thorax', 'left lung', 'right lung');
%%FEM model hrudníku
thorax_shape = { 1,                       % výška
          {(shape.thorax(1:end-1,:) - 256)/256,
           (shape.leftLung(1:end-1,:) - 256)/256
           (shape.rightlung(1:end-1,:) - 256)/256},  % kontury
          1,                 % použití defaultních vrcholů 
          *2};                % maxh (zjemnění )*
elec_pos = [ 16,                  % počet elektrod
             1,                   % vzdálenost mezi elektrodami
             0.5]';               % v z rovině

elec_shape = [0.05,                % poloměr
              0,                   % kulaté elektrody 
              0.05 ]';             % maxh (zjemnění)

fmdl = ng_mk_extruded_model(thorax_shape, elec_pos, elec_shape);
img=mk_image(fmdl,1);
img.elem_data(fmdl.mat_idx{2})= 0.3; % rlung
img.elem_data(fmdl.mat_idx{3})= 0.5; % llung
figure();
show_fem(img);

I would like to change the size of mesh elements, because Matlab is too long busy. I think I should modify this line

(2};                % maxh (zjemnění )), but I do not know to what value.

Thank you for your answers.

Answer 1

[Walter Roberson]

I do not happen to read the language the comments are in (and it is not convenient for me to run them through a translator at the moment) but it looks to me as if you should reduce Npts1 and Npts2