4D dicom matrix? Why not 3D?
2 Ansichten (letzte 30 Tage)
Ältere Kommentare anzeigen
I converted a mha file to dicom format (and got this file: https://www.dropbox.com/s/i0cr2910ie4k5zy/TumorSimOutput2_T1.dcm ) via a Linux utility program (this one: http://manpages.ubuntu.com/manpages/lucid/man1/gdcm2vtk.1.html ) and visualize it via imshow using threedimensional indexing:
imshow(image_data(:,:,index),'DisplayRange',[]);
when I examine the dimensions of image_data I get:
256 256 1 181
I don't understand the purpose of this dimension of 1 element and why isn't required to specify it via imshow. Is this the gray level intensity? How can I check that?
0 Kommentare
Akzeptierte Antwort
Walter Roberson
am 8 Feb. 2013
Some MATLAB routines recognizes four-dimensional arrays as being arrays of images when the third dimension is 1 (grayscale) or 3 (RGB)
However, when you use
image_data(:,:,index)
on a 4 dimensional array, the result is defined to be the same as if you had specified
image_data(:,:,index,1)
As the final two dimensions are both 1, the result of this would be automatically collapsed in representation to two dimensions.
Weitere Antworten (1)
ChristianW
am 8 Feb. 2013
Bearbeitet: ChristianW
am 8 Feb. 2013
"Is this the gray level intensity?" - Yes, color reserved dimensions.
It's mostly not about the gray scale. These values just reference to a color in the colormap.
[X, map] = dicomread('US-PAL-8-10x-echo.dcm');
montage(X, map, 'Size', [2 5]);
0 Kommentare
Siehe auch
Kategorien
Mehr zu DICOM Format finden Sie in Help Center und File Exchange
Produkte
Community Treasure Hunt
Find the treasures in MATLAB Central and discover how the community can help you!
Start Hunting!