1. A system, comprising: a memory storing computer executable components; and a processor configured to execute computer executable components stored in the memory comprising: a reference component that determines a set of interest points in a signal image; a grouping component that groups interest points of the set of interests points in respective triples having three interest points; a descriptor component that determines respective stretch invariant descriptors for each of the triples; a quantization component that quantizes the determined stretch invariant descriptors based at least in part on a set of quantization criteria; a histogram component that aggregates the quantized stretch invariant descriptors into a histogram over a window of time; a hashing component that generates at least one hash value as a function of the histogram at predetermined intervals; and an identification component that identifies a media content associated with the signal image based upon a comparison of the at least one hash value against a hash table of a plurality of known media content.