  Though analyzing a single scalar field using Morse complexes is well studied,
there are few techniques for visualizing a collection of Morse complexes. We
focus on analyses that are enabled by looking at a Morse complex as an embedded
domain decomposition. Specifically, we target 2D scalar fields, and we encode
the Morse complex through binary images of the boundaries of decomposition.
Then we use image-based autoencoders to create a feature space for the Morse
complexes. We apply additional dimensionality reduction methods to construct a
scatterplot as a visual interface of the feature space. This allows us to
investigate individual Morse complexes, as they relate to the collection,
through interaction with the scatterplot. We demonstrate our approach using a
synthetic data set, microscopy images, and time-varying vorticity magnitude
fields of flow. Through these, we show that our method can produce insights
about structures within the collection of Morse complexes.
