why the image is not display in the output?
1 vue (au cours des 30 derniers jours)
Afficher commentaires plus anciens
lambda=500e-9;
k=(2*pi)/lambda;
a=1e-6;
Io=100.0;
R=1.0e-3;
Y=(-0.25e-2:1e-5:0.25e-2); Z=Y ;
I(1:length(Y),1:length(Z))=0;
for i=1:length(Y)
for j=1:length(Z)
q=(Y(i).^2+Z(j).^2).^0.5;
w = 0.05;
I(i,j)=Io.*exp(-((q.^2)./w^2));
end
end
imshow(I)
1 commentaire
Réponses (1)
Mathieu NOE
le 30 Août 2022
hello
Your I array has not much delta between min (99.5) and max value (100), so you need to help imshow autoscale its range to these min / max values;
figure(1),imshow(I,[]) % grayscale display , zoomed in min / max I range
% IMSHOW(I,[]) displays the grayscale image I scaling the display based
% on the range of pixel values in I. IMSHOW uses [min(I(:)) max(I(:))] as
% the display range, that is, the minimum value in I is displayed as
% black, and the maximum value is displayed as white.
%% alternative
figure(2),imagesc(I) ; % automatic image scaling
0 commentaires
Voir également
Catégories
En savoir plus sur Image Processing Toolbox dans Help Center et File Exchange
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!