On Thursdays the USPTO publishes new patent applications. Today's Spotlight Applications concern digital watermarking and fingerprinting. Assigned to Mitsubishi Electric (JP), the first application discloses techniques for electronic watermarking embedding and detection. Assigned to Thomson, the second application discloses techniques for object oriented fingerprinting of digital videos.
A digital watermark embedding device and a digital watermark detecting device are obtained, which can realize stable digital watermark detection using fewer, and embed and detect a larger amount of digital watermark information with an identical number of pixels used for digital watermark embedding in a conventional technology. The digital watermark embedding device includes: an embedding-information converting unit (103) for converting inputted information to be embedded into a bit string formed of "0's" and "1's" and embedding respective bits of the converted bit string multiple times to output a digital watermark pattern having N -1's or N+1's as elements; an orthogonal-pattern generating unit (105) for generating orthogonal patterns each formed of a combination of elements of -1's and +1's and orthogonal to one another; an integrating unit (109) for integrating each of the orthogonal patterns from the orthogonal-pattern generating unit with each of the elements of the digital watermark pattern from the embedding-information converting unit to generate an embedding pattern; and a digital-watermark embedding unit (107) for embedding pattern from the integrating unit in an input image and outputting an image after embedding information.
20090288170, "System and method for object oriented fingerprinting of digital videos," assigned to Thomson.
A system and method for object oriented fingerprinting of digital videos and motion pictures are provided. The system and method enables a user to embed various `natural objects` as watermarks that match well with a particular scene in a movie or to modify existing objects in the scene during a digital editing stage. The system and method provides for determining a number of unique copies of the motion picture needed, determining a number of watermarks and variations of the watermarks based on the number of unique copies, selecting at least one object occurring in at least one scene of the motion picture equal to the determined number of watermarks, creating the determined number of variations for the object, and creating a unique combination of the created variations of the object for each copy. Each unique combination is encoded into a value for identifying each of the plurality of copies.