Multi-plane image inputs must be RGB images of size MxNx3.

i have a total of 381 dicom imgaes which i have stacked. now i want to see the stacked images but when i use imshow function for it gives an error 'Multi-plane image inputs must be RGB images of size MxNx3'. my stacked image variable shows it value 512x512x381 uint16. how can i see those stacked images?

Answer 1

[Walter Roberson]

imshow is only for single grayscale images or single rgb images.

If you are using a fairly recent version see volumeViewer() and otherwise look in the File Exchange for vol3d v2.

Or use implay() if you don't need a volume view.

[Deepa S]

what if i want to convert one '512x512 uint 16 'dicom picture into '512x512x3 uint8' ? how to convert ?

[Rik]

While it is possible to do that, you really shouldn't. By doing that you will be throwing out a lot of image detail and you will treat different slices of your CT as the three color channels.

What would be your goal with turning three slices into a color image?

[Walter Roberson]

RGB8 = im2uint8(IndividualGrayscaleImage(:,:,[1 1 1]));

However this will not help you view the images as a volume.

For some of the functions able to display volumes, it can help to

reshape(ImageStack, size(ImageStack,1), size(ImageStack,2), 1, size(ImageStack,3))

or equivalently,

permute(ImageStack, [1 2 4 3])

manking a 512 x 512 x 1 x 381 stack .

Some of the display routines need this 4D array in order to distinguish what could hypothetically be a single image with 381 information channels compared to a stack of 381 grayscale images.

However, imshow() is not one of the routines. imshow() can only handle grayscale and RGB.