Abstract: A system and method for digital signal compression, segmentation and steganography. Application of a continuous boundary local trigonometric transform (CBLTT) provides analysis of a signal in a localized manner. The CBLTT decomposes the signal into regions that are assumed to be independent of one another that then undergo an invertible, nonlinear transformation and is projected onto an orthogonal basis.

Abstract: A system and method for embedding and retrieving covert data in overt media. The covert data is imperceptibly embedded into overt media, such as an image, using techniques such as time domain and frequency domain embedding, to generate embedded media The embedded media may be decoded by capturing an image of the embedded media using a smartphone or the like, and then decoding the embedded media to obtain the covert data. The covert data may be used in standalone fashion, such as for authentication, or may be looked up in a database or the like to obtain additional information such as promotional and advertising information.

Abstract: Under one aspect of the present invention, a method is provided for analyzing a mixture of DNA from two or more contributors, to identify at least one contributor's STR genotypes at a plurality of STR loci. Possible solutions may be determined independently for each STR locus, each solution including the number of contributors, an STR genotype for each contributor at that locus, an abundance ratio of their respective contributions, and a confidence score. The most likely solutions for the STR locus having the highest confidence score then are used as givens, based upon which the solutions for the other STR loci may be sequentially obtained, in each instance using as givens the most likely solutions for any previously analyzed loci. STR genotypes are output that share as givens the number of contributors and the abundance ratio used in the most likely solution for the last analyzed STR locus.