New patents are issued by the USPTO on Tuesdays. Today's Spotlight Patents concern aspects of digital fingerprinting. Assigned to ADB (CH), the first patent addresses techniques for automatic categorization of audio/video content. Assigned to Gracenote, the second patent addresses techniques for identifying video content via color-based fingerprint matching.
10,503,980, "System and method for automatic categorization of audio/video content," assigned to Advanced Digital Broadcast S.A. (CH)
Method for categorization of audio/video content, the method comprising the steps of: detecting a start and an end of at least one advertisements block present in said audio and/or video content; for each detected advertisements block: selectively collecting audio and/or video data frames, from said audio and/or video content, within specified time intervals prior to said detected advertisements block; for each time interval, computing a fingerprint; selectively collecting reference audio and/or video data frames, after said advertisements block, for comparison and computing a reference fingerprint for said reference audio and/or video data frames; comparing said reference fingerprint with at least one fingerprint collected prior to the start of said advertisements block in order to obtain a level of similarity between said fingerprints; based on the level of similarity, taking a decision whether to indicate a split point between content items present in said audio/video content.
10,503,956, "Identifying video content via color-based fingerprint matching," assigned to Gracenote.
Systems and methods of identifying unknown video content are described. An example method may include receiving a first fingerprint and a second fingerprint. The first fingerprint may be a color-based fingerprint derived from colors in a portion of the unknown video content, and the second fingerprint may be at least partially based on a feature other than the colors of the unknown video content. A reference database of reference fingerprints may then be queried using one of the first fingerprint or the second fingerprint to obtain a candidate group of fingerprints. The candiate group of fingerprints may then be pried using the other of the first fingerprint and the second fingerprint to identify at least one query fingerprint. The unknown video content may then be identified using the at least one query fingerprint. For example, the second fingerprint may be a luminance-based fingerprint derived from luminance in the unknown video content.