The PTO issues new patents on Tuesdays. Both of today's Spotlight Patents concern aspects of digital fingerprinting. Assigned to Google, the first patent addresses techniques for transformation invariant media matching. Assigned to Synergy Sports Technology, the second patent addresses techniques for generating bookmark video fingerprints.
8,738,633, "Transformation invariant media matching," assigned to Google.
This disclosure relates to transformation invariant media matching. A fingerprinting component can generate a transformation invariant identifier for media content by adaptively encoding the relative ordering of interest points in media content. The interest points can be grouped into subsets, and stretch invariant descriptors can be generated for the subsets based on ratios of coordinates of interest points included in the subsets. The stretch invariant descriptors can be aggregated into a transformation invariant identifier. An identification component compares the identifier against a set of identifiers for known media content, and the media content can be matched or identified as a function of the comparison.
8,737,681, "Systems and methods for generating bookmark video fingerprints," assigned to Synergy Sports Technology, LLC.
Systems and methods for replacing original media bookmarks of at least a portion of a digital media file with replacement bookmarks is described. A media fingerprint engine detects the location of the original fingerprints associated with the portion of the digital media file and a region analysis algorithm characterizes regions of media file spanning the location of the original bookmarks by data class types. The replacement bookmarks are associated with the data class types and are overwritten or otherwise are substituted for the original bookmarks. The replacement bookmarks then are subjected to a fingerprint matching algorithm that incorporates media timeline and media