Convert 2D image into 3D (to get the x y z coordinates of the image)
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I know there have been similar articles related to this but I am not sure if those articles can help me with what I am trying to do.
So I have a regular png 2D image which I want to convert into 3D image so that I can get the x y and z coordinates. Basically, I need those coordinates in order to calculate some volume.
What should be the appraoch to start this?
drummer am 30 Okt. 2020
Tecnically, with only one single 2D image, you cannot obtain a tridimensional image.
As you might know, a 2D image has [x, y] dimensions. You can see it by calling
size(yourPNGimageFile) % It will return a vector of two values (x and y)
The z dimension (that represents real data) come from a volumetric (3D) image.
>>size(brainScan) %example of volumetric image of x = 128, y = 128, z 256
128 128 256
if you pick
brainScan(:, :, 45) % It means you're taking all x, all y and a single slice of the volume (the 45th).
So the way around is possible: to get a 2D image out of a stack of slices in a 3D-image volume.
YOU CAN make a stack of your png 2D images. But it would not make sense, as it will be a stack of repeated images.
yourStack(:, :, 1) = yourPNGfile;
yourStack(:, :, 2) = yourPNGfile; % Then, you have your x, y and z coordinates.