How to find the mask boundaries?

In a 3D image, a mask represents the 'tumor volume.'

How can I easily find its pixel range: [Xmin, Xmax], [Ymin, Ymax], and [Zmin, Zmax]?

I know there is dumb way to do this, but I’m sure MATLAB has a smarter function to achieve this.

Could you suggest an efficient method?

Thanks for your help!

Answer 1

[Matt J]

[Y,X,Z]=find(Mask);

S=X+Y+Z;

[~,i]=min(S);
[~,j]=max(S);

[Xmin,Ymin,Zmin,  Xmax,Ymax,Zmax] =deal( X(i), Y(i), Z(i),  X(j), Y(j), Z(j))