Resources Contact Us Home
Method for concealing data in curves of an image

Image Number 19 for United States Patent #7817817.

A method of concealing data in images imperceptibly alters curves therein, such as through adding a value representing the data to be hidden to each of a number of B-spline control points representing the original curve. The altered control points characterize the imperceptibly altered curve, which replaces the original curve in the image. The altered control points may be later extracted from the image and compared with the original control points to determine the hidden value. Prudent selection of the values altering the control points as well as an iterative alignment-minimization algorithm in the detection process provides protection against numerous techniques for preventing the hidden values from being recovered.

  Recently Added Patents
System and method for deriving cell global identity information
Plural component proportioner
Multi-level integrated circuit, device and method for modeling multi-level integrated circuits
Generating network topology parameters and monitoring a communications network domain
Method for delivering a volatile material
Method for eliciting an immune response to human telomerase reverse transcriptase
Maesa japonica extracts and methods of use
  Randomly Featured Patents
Bag having an improved heat seal closure and associated methods
Process for producing formed and labelled three dimensional plastic articles
Planter board of stone
Cable connector
Seat for motor vehicle
Method and apparatus for automated program-generation
Railway control signal dynamic output interlocking systems
Maize variety 6746633
Non-steroidal brassinosteroid mimetic