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Direct grounding of spatial relations that correspond to most commonly used in language spatial prepositions and abstract action representations based on the temporal evolution of object-wise spatial relations.

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README.md

spatial-relations

Direct grounding of spatial relations that correspond to most commonly used in language spatial prepositions and abstract action representations based on the temporal evolution of object-wise spatial relations.

Usage

See Spatial Relations/demo.m for quick examples on how to compute PVS-based action descriptors given tracked object point clouds and how to compare action descriptors.

Dependencies

Computing distances between PVS-based action descriptors is formulated as a MIQP (Mixed-Integer Quadratic Program) and the current implementation (compareActions.m) relies on OPTI Toolbox (SCIP solver). Switching to another MIQP solver should not be difficult (the laborious part of building the objective/constraint matrices is done).

Project homepage

http://www.cs.umd.edu/~kzampog/research.html#spatial_relations

References

This is the original implementation for the work introduced in the ICRA 2015 paper:
Learning the Spatial Semantics of Manipulation Actions through Preposition Grounding [pdf]
Konstantinos Zampogiannis, Yezhou Yang, Cornelia Fermüller, Yiannis Aloimonos

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Direct grounding of spatial relations that correspond to most commonly used in language spatial prepositions and abstract action representations based on the temporal evolution of object-wise spatial relations.

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