Group actions in computational anatomy refer to the mathematical framework used to model and analyze the variability of shapes and anatomical structures using group theory. In this context, a group is a set of transformations (such as rotations, translations, and scalings) that can be applied to anatomical objects (like organs or tissues) within a normalized space. ### Key Concepts: 1. **Shapes and Variability**: Anatomical structures can vary due to biological differences between individuals, developmental processes, or pathological changes.
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