10. The method for content recognition, search, and retrieval in visual data as set forth in claim 9 , wherein the hierarchical content descriptor module comprises a first level for detecting a set of salient spatiotemporal regions which are abstracted into a set of activity-agnostic spatiotemporal visual words, wherein a collection of each of the sets of activity-agnostic spatiotemporal visual words form a visual vocabulary.
9. The method for content recognition, search, and retrieval in visual data as set forth in claim 8 , further comprising an act of comparing a set of generated activity-agnostic content descriptors from the unlabeled video clip to the set of generated activity-agnostic content descriptors in the storage module to retrieve a match.