MATLAB: Extract a parallel planes of elements from a 3D array

arraysImage Processing Toolboxplanes

I have a 3D array of numbers. I want to define a rectangular plane through that 3D structure, rather I specify two lines that make up the sides of the rectangular plane.Planes parallel to this specified plane should slice through the 3D structure and the output obtained should be an array like the input I had given but with the elements rearranged accordingly.

I would appreciate some help on how to go about this task.

Best Answer

Use TFORMARRAY, if you have the image processing toolbox.

Related Solutions

MATLAB: Aligning 3D stereo co-ordinate system along local vertical and local horizontal

Hi Meghana,

Please keep in mind that in the camera-based coordinates the X-Y plane is the image plane, which is inside the camera. It may well not be precisely aligned with the camera's outer casing.

If you need a world coordinate system not tied to the camera, then you can define one by placing a checkerboard in your scene. You can then use the extrinsics function to compute the transformation from the checkerboard's coordinates into the camera's coordinates.

MATLAB: Can I apply imtranslate to a 4D image

The code below implements what I mentioned in my comment. It might also be the case that your 4D is actually a 3D in the same format as in the mri.mat example bundled with the IPT. In that case, you could simply have used squeeze.

S=load('mri');%load a builtin 3D example
IM=repmat(squeeze(S.D),1,1,1,10);%generate a 4D
translation_vector=[13 40 -1 2];
IM2=imtranslate(IM(:,:,:,1),translation_vector(1:3));
for n=2:size(IM,4)
    IM2(:,:,:,n)=imtranslate(IM(:,:,:,n),translation_vector(1:3));
end
if translation_vector(4)~=0
    IM2b=imtranslate(squeeze(IM2(1,:,:,:)),[0 0 translation_vector(4)]);
    IM2b=permute(IM2b,[4 1 2 3]);
    for n=2:size(IM2,1)
        IM2b(n,:,:,:)=imtranslate(squeeze(IM2(n,:,:,:)),[0 0 translation_vector(4)]);
    end
    IM2=IM2b;
end

Best Answer

Related Solutions

MATLAB: Aligning 3D stereo co-ordinate system along local vertical and local horizontal

MATLAB: Can I apply imtranslate to a 4D image

Related Question