New pending patent applications are published on Thursdays by the USPTO. Both of today's Spotlight Applications concern aspects of digital watermarking. Assigned to Nielsen, the first application discloses techniques for performing audio watermarking and watermark detection and extraction. Assigned to Digimarc, the second application discloses techniques for closed form non-iterative watermark embedding.
20170061975, "Methods and apparatus to perform audio watermarking and watermark detection and extraction," assigned to The Nielsen Company.
Methods and apparatus to audio watermarking and watermark detection and extracted are described herein. According to an example method, an identifier is encoded in media content when a different identifier has been previously encoded. According to another example method, messages decoded from media content are validated to provide improved decoding accuracy. In another example method, decoded symbols are stored in memory and synchronization symbols are located to detect a message encoded in media content.
20170061564, "Closed form non-iterative watermark embedding," assigned to Digimarc.
The present disclosure relates generally digital watermarking and data hiding techniques. One claim recites a method comprising: obtaining data representing imagery; using one or more configured processors, transforming the data into a multi-channel color space; obtaining information indicating an impact of adding a color channel encoded signal to a color direction of the data; determining a color space direction for encoded signal detection; obtaining weighting factors based on the information indicating an impact of adding a color channel encoded signal; weighting the color channel encoded signal with weighting factors to yield a modified color channel encoded signal; using one or more configured processors, embedding the modified color channel encoded signal in the data representing imagery. Of course, other claims and combinations are provided as well.