How to plot a point in 3D data displayed in volume Viewer?
11 visualizaciones (últimos 30 días)
Mostrar comentarios más antiguos
M W
el 27 de En. de 2020
Comentada: Rik
el 25 de Abr. de 2023
I have a 3D medical image.
I want to mark a certain point in that image and display the 3D image with volumeViewer.
The point has x,y,z coordinates.
How can I plot this point into the 3D image and display both in volume Viewer?
4 comentarios
Dunja Gorup
el 24 de Abr. de 2023
XYZCoordinates_Array was positive integers array (:,:,:).
I(XYZ)=true; %does not preform as expected for e.g. XYZ=[10,13,9;12,11,8;1,2,3;3,4,5;1,7,5];
I(XYZ(1,:))=true % does not produce the same result as I(10,13,9)=true;
The solution was achieves by sub2index as below.
Rik
el 25 de Abr. de 2023
The reason why this is the case, is that the indexing does not produce a comma separated list. You can produce such a list with a struct array and with a cell array:
XYZ=[10,13,9;12,11,8;1,2,3;3,4,5;1,7,5];
XYZ(1,:) % normal array
tmp = num2cell(XYZ);
tmp{1,:} % comma separated list
Respuesta aceptada
Selva Karna
el 28 de En. de 2020
To view 3d Volume:
clc
clear all;
close all;
your volume=V;
volshow(V)
3Point view:
% Make mask 3d based on your 3d points
len=length(your 3d points);
% Create Mask
3d_mask=zeros(your_3d points(size));
3d_mask(:,:,:)=your_3d_mask_holes;
volshow(3d_mask)
4 comentarios
Dunja Gorup
el 24 de Abr. de 2023
Following solution worked by subindexing:
AL=zeros(50,50,50);
XYZ=[10,13,9;12,11,8;1,2,3;3,4,5;1,7,5];
ind = sub2ind(size(AL), XYZ(:,1), XYZ(:,2), XYZ(:,3));
AL(ind) = true;
volshow(AL);
Dunja Gorup
el 25 de Abr. de 2023
However, this mask is sometimes offset to the original image from which the voxel values were derived. Probably due to some transformation?
Más respuestas (0)
Ver también
Categorías
Más información sobre 3-D Volumetric Image Processing en Help Center y File Exchange.
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!