ENSEEIHT/TP-modelisation-images
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Laurent Fainsin 2022-04-06 22:17:11 +02:00
parent 74365d944c
commit 2cf841e339
2 changed files with 55 additions and 58 deletions
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13
TP_maillage.m
View file

@ -136,21 +136,17 @@ nexttile;
imshow(bw_img);
hold on
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% A FAIRE SI VOUS UTILISEZ LES MASQUES BINAIRES FOURNIS %
% Chargement des masques binaires %
% de taille nb_lignes x nb_colonnes x nb_images %
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
pixel_b = find(bw_img == 1);
[r, c] = ind2sub(size(bw_img), pixel_b(1));
contour = bwtraceboundary(bw_img, [r c], 'W', 8);
plot(contour(:, 2), contour(:, 1), 'g', 'LineWidth', 3);
% r = delaunay(contour);
% barycentres = (contour(r(:,1),:) + contour(r(:,2),:) + contour(r(:,3),:)) / 3;
% scatter(barycentres(:,2), barycentres(:,1));
@ -161,7 +157,6 @@ T = 1;
plot(vy, vx, 'b');
% Selection des segments qui ont leurs extrémités dans l'image
ok = vx(1, :) > 1 & vx(1, :) < size(bw_img, 1) & ...
vx(2, :) > 1 & vx(2, :) < size(bw_img, 1) & ...
@ -194,7 +189,6 @@ imshow(bw_img);
hold on
plot(vy, vx, 'b');
% Remise en forme de vx et vy
vx_ = vx';
vx_ = [vx_(:, 1); vx_(:, 2)];
@ -204,7 +198,6 @@ vy_ = [vy_(:,1) ; vy_(:,2)];
V_ = [vx_ vy_];
% Calcule des rayons
contour_ = contour';
R = complex(V_(:, 1), V_(:, 2)) - complex(contour_(1, :), contour_(2, :));
@ -247,7 +240,6 @@ plot(vy, vx, 'b');
vx_vy = [vy(1, :) vy(2, :); vx(1, :) vx(2, :)]';
viscircles(vx_vy(1:1:end, :), R(1:1:end));
%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@ -315,12 +307,12 @@ T = delaunayTriangulation(X(1,:)', X(2,:)', X(3,:)');
% figure;
% tetramesh(T);
% A DECOMMENTER ET A COMPLETER
% Calcul des barycentres de chacun des tetraedres
poids = [1 1 1 1] / 4;
nb_barycentres = size(T.ConnectivityList, 1);
for i = 1:size(T, 1)
% Calcul des barycentres differents en fonction des poids differents
% En commencant par le barycentre avec poids uniformes
@ -350,8 +342,10 @@ tri = T.ConnectivityList;
% ne se trouvent pas dans au moins un des masques des images de travail
% Pour chaque barycentre
to_save = [];
for k = 1:nb_barycentres
valide = 0;
for i = 1:nb_images
o = P{i} * C_g(:, k);
o = o / o(3);
@ -362,6 +356,7 @@ for k = 1:nb_barycentres
valide = 1;
break
end
end
if valide

2
TP_maillage_suite.m
View file

@ -11,9 +11,11 @@ fprintf('Calcul du maillage final termine : %d faces. \n',size(FACES,1));
% Affichage du maillage final
figure;
hold on
for i = 1:size(FACES, 1)
plot3([X(1, FACES(i, 1)) X(1, FACES(i, 2))], [X(2, FACES(i, 1)) X(2, FACES(i, 2))], [X(3, FACES(i, 1)) X(3, FACES(i, 2))], 'r');
plot3([X(1, FACES(i, 1)) X(1, FACES(i, 3))], [X(2, FACES(i, 1)) X(2, FACES(i, 3))], [X(3, FACES(i, 1)) X(3, FACES(i, 3))], 'r');
plot3([X(1, FACES(i, 3)) X(1, FACES(i, 2))], [X(2, FACES(i, 3)) X(2, FACES(i, 2))], [X(3, FACES(i, 3)) X(3, FACES(i, 2))], 'r');
end;
view(80, -10);