DETECTING CHANNEL CHANGE IN AUTOMATIC CONTENT RECOGNITION FINGERPRINT MATCHING

摘要

The disclosed system and method receives, from a media device, a query fingerprint that includes an ordered sequence of frames of content being consumed, and matches the query fingerprint with frame fingerprints by determining a distance between respective frame fingerprints and corresponding ones of the ordered sequence of frames. The matching may be performed by populating a binary tree structure with respective distances, chronologically across leaf nodes of the binary tree structure, and then noting a value of the root node. If below a maximum threshold, then there is a match. The system and method may detect a channel change at the media device by traversing a right or a left sub-tree of the binary tree structure, and locating a low value (or a zero) at the first or second nodes of the sub-tree. This channel change may be useful in targeting media to content being streamed to the media device.

主权项

1. A system comprising:
computer-readable storage medium storing instructions and a database having a plurality of frame fingerprints associated with media programs being streamed to a plurality of channels; at least one processing device to execute the instructions to:
receive, from a media device, a query fingerprint of content being consumed, the query fingerprint including an ordered sequence of frames;match the query fingerprint with the plurality of frame fingerprints stored in the database by determining a distance between respective frame fingerprints and corresponding ones of the ordered sequence of frames, wherein to match comprises to populate a binary tree structure with respective distances;detect a channel change from a first channel to a second channel responsive to locating a zero value within a threshold number of children nodes from a root node when traversing down the binary tree structure; anddetermine an identity of the second channel by identifying a channel streaming content with frames matching those at an end of the ordered sequence of frames of the query fingerprint.