Media channel identification and action with multi-match detection and disambiguation based on matching with differential reference—fingerprint feature
A computing system compares various reference fingerprints each representing a reference media stream broadcast on a different respective known channel, and the computing system determines that a plurality of the reference fingerprints match each other, thus defining a multi-match group of the matching reference fingerprints. In response, the computing system identifies a fingerprint feature that could define a distinction between the reference fingerprints, and the computing system resolves the multi-match based on the identified feature, thereby determining the channel carrying the media stream being rendered by the media presentation device. And the server then takes channel-specific action based on the determined channel.
1. A method comprising:
determining, by a computing system, that a query fingerprint of media content being rendered by a media presentation device matches multiple reference fingerprints each corresponding with a different respective channel than each other;
responsive to at least determining that the query fingerprint matches the multiple reference fingerprints each corresponding with a different respective channel, performing disambiguation by (i) identifying a fingerprint feature that differs as between the multiple reference fingerprints and (ii) determining that the query fingerprint matches just one of the reference fingerprints as to the identified fingerprint feature, whereby the disambiguation establishes that the media presentation device is receiving the media content on the channel corresponding with the one reference fingerprint; and
taking action based on the establishing that the media presentation device is receiving the media content on the channel corresponding with the one reference fingerprint,
wherein the computing system includes or has access to channel-data that indicates for the channels corresponding with the multiple reference fingerprints a region of media content that is channel specific, and wherein identifying the fingerprint feature that differs as between the multiple reference fingerprints comprises (i) referring to the data to determine the region of media content that is channel specific and (ii) identifying as the fingerprint feature that differs as between the multiple reference fingerprints a fingerprint feature corresponding with the determined region of media content, and
wherein the media content comprises video content, and wherein the region of media content that is channel specific comprises a video frame region that is at least one of (i) at a video frame edge or (ii) where channel identification is presented.
2. The method of claim 1 , wherein taking action based on the establishing that the media presentation device is receiving the media content on the channel corresponding with the one reference fingerprint comprises causing supplemental channel-specific content to be presented by the media presentation device in conjunction with the media content being rendered by the media presentation device.
3. The method of claim 1 , wherein taking action based on the establishing that the media presentation device is receiving the media content on the channel corresponding with the one reference fingerprint comprises recording presentation of the single channel for use in a channel ratings system.
4. The method of claim 1 , wherein the computing system is an entity other than the media presentation device, and wherein the query fingerprint is generated by the media presentation device, the method further comprising the computing system receiving the query fingerprint from the media presentation device.
5. The method of claim 1 , wherein the multiple reference fingerprints are selected from a plurality of reference fingerprints in reference data, and wherein determining that the query fingerprint of the media content being rendered by the media presentation device matches the multiple reference fingerprints comprises:
comparing the query fingerprint with the plurality of reference fingerprints in the reference data, and
based on the comparing, determining that the query fingerprint matches the multiple reference fingerprints.
6. The method of claim 1 , carried out at least in part by the media presentation device.
7. A system comprising:
a network communication interface;
a processing unit;
non-transitory data storage; and
program instructions stored in the non-transitory data storage and executable by the processing unit to carry out operations including:
receiving from a media presentation device, via the network communication interface, a query fingerprint of media content being rendered by the media presentation device,
determining that the received fingerprint matches multiple reference fingerprints each corresponding with a different respective channel,
responsive to at least determining that the received fingerprint matches the multiple reference fingerprints each corresponding with a different respective channel, performing disambiguation by (i) identifying a fingerprint feature that differs as between the multiple reference fingerprints and (ii) determining that the query fingerprint matches just one of the reference fingerprints as to the identified fingerprint feature, whereby the disambiguation establishes that the media presentation device is receiving the media content on the channel corresponding with the one reference fingerprint, and
taking action based on the establishing that the single channel carries the media content being rendered by the media presentation device,
wherein the system includes or has access to channel-data that indicates for the channels corresponding with the multiple reference fingerprints a region of media content that is channel specific, and wherein identifying the fingerprint feature that differs as between the multiple reference fingerprints comprises (i) referring to the data to determine the region of media content that is channel specific and (ii) identifying as the fingerprint feature that differs as between the multiple reference fingerprints a fingerprint feature corresponding with the determined region of media content, and
wherein the media content comprises video content, and wherein the region of media content that is channel specific comprises a video frame region that is at least one of (i) at a video frame edge or (ii) where channel identification is presented.
8. The system of claim 7 , wherein taking action based on the establishing that the single channel carries the media content being rendered by the media presentation device comprises causing supplemental channel-specific content to be presented by the media presentation device in conjunction with the media content being rendered by the media presentation device.
9. The system of claim 7 , wherein taking action based on the establishing that the single channel carries the media content being rendered by the media presentation device comprises recording presentation of the single channel for use in a channel ratings system.
10. The system of claim 7 , wherein the multiple reference fingerprints are selected from a plurality of reference fingerprints in reference data, and wherein determining that the received fingerprint of the media content being rendered by the media presentation device matches the multiple reference fingerprints comprises:
comparing the query fingerprint with the plurality of reference fingerprints in the reference data, and
based on the comparing, determining that the query fingerprint matches the multiple reference fingerprints.