Imagesc() shows blank image?!

Question

Sara Salimi 2016-10-13

0
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此问题的直接链接

https://ww2.mathworks.cn/matlabcentral/answers/307051-imagesc-shows-blank-image

评论： Sara Salimi 2016-10-13

Hello,

I have a vector that I am using reshape() to create images matrices and show it using imagesc() function every one second; however, it shows a blank images. The result of two classifiers is in Class_T and Class_F. First subplot shows image produced from Class_T, the second subplot shows image produced from Class_F, and the third one shows both.

Does anyone know how can I fix this issue? The code is as follows:

Lx = length(X2); % the number of rows 512
Ly = length(Y2); % the number of columns 512
X_F = []; Y_F = []; Class_F = [];
X_T = []; Y_T = []; Class_T = [];
Class_T = (Score_T_Test(:,2)>0.5)&(Score_T_Test(:,2)>=Score_F_Test(:,2));
Class_F= 0.5*((Score_F_Test(:,2)>0.5)&(Score_T_Test(:,2)<Score_F_Test(:,2)));
for i = 1:length(Z2)  %Z2=number of images
    subplot(1,3,1)
    imagesc(reshape(Class_T((i-1)*Lx*Ly+1:i*Lx*Ly),Lx,Ly)), colormap('gray')
    title('T Segmentation')
    subplot(1,3,2)
    imagesc(reshape(Class_F((i-1)*Lx*Ly+1:i*Lx*Ly),Lx,Ly)), colormap('gray')
    title('F Segmentation')
    subplot(1,3,3)
    Im_Class = max([Class_T Class_F],[],2);
    imagesc(reshape(Im_Class(end-Lx*Ly+1:end),Lx,Ly)), colormap('gray')
    title('Segmentation')
    pause(1)
end