title: Numpy arrays as image, image channels
body: <p>I have a 3D Image represented in numpy array format. Shape is (60, 60, 15) , 60 width 60 height 15 frames deep.</p>
  
  <p>Now I want to process this image further with another library. But this library requires an argument "channels". <a href="https://keras.io/layers/convolutional/#conv3d" rel="nofollow noreferrer">https://keras.io/layers/convolutional/#conv3d</a></p>
  
  <p>What I don't get is how to find out how many channels my image has. 
  Images are 3D MRI images: 
  1 slice:</p>
  
  <p><a href="https://i.stack.imgur.com/eh5WH.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/eh5WH.png" alt="example image"></a></p>