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
Bamboo scrimber and manufacturing method thereof
Image generation device with optimized dose control
Reliable and accurate usage detection of a software application
Method, device and computer readable medium for determining whether transmission signals are present in received signals
Stacked thin-film superlattice thermoelectric devices
Multi-user remote health monitoring system with biometrics support
Support for a parameterized query/view in complex event processing
  Randomly Featured Patents
Display device superimposed in viewfinder with adjustable brightness
Discharge lamp with integral starter
Electronic driver circuit that utilizes resonance with load circuitry in combination with timed switching to reduce power consumption
Flexible multipanel tool pouch
Mascara container having a stirrer and a separate wiper
Motor vehicle steering system with automatic disturbance suppression
Controlling access to suspicious files
Method for deploying fasteners for use in a gastric volume reduction procedure
Paragraph recognition in an optical character recognition (OCR) process
Integrated circuit with a laterally diffused metal oxide semiconductor device and method of forming the same