Fig. 6. An example of the low-dimensional embedding generated from the WKS graph descriptor and weighted MA.

All sagittal slices are shown. Colour corresponds to a respiratory navigator generated from the gold standard synthetic images. The ’v’ shape of the manifold is typical, but the strong relation between the position in the manifold and the colour of the points illustrates that the embedding places close together points which share similar respiratory motion states, as intended.