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
Ejection station
Dielectric insulation medium
Control of protein activity using a conducting polymer
Integrated circuit having a discrete capacitor mounted on a semiconductor die
Light emitting diode package and method of fabricating the same
Semiconductor device comprising a Fin and method for manufacturing the same
Load balancing for parallel tasks
  Randomly Featured Patents
Manufacturing method for wear resistant sintered member, sintered valve seat, and manufacturing method therefor
Method and apparatus for determining deformation and elongation on curved bodies
Firearm barrel having protective sleeve
Gluteus muscle machine
Uniform illumination optical device with a concave lens
Susceptor and manufacturing method thereof
Drive mechanism for an asynchronous printer
Lens quality of die steel
Method of detecting single gene copies in-situ