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
Touch screen guitar
Image stabilization apparatus and image pickup apparatus
Mobile electronic device
Data feed management
DRAM refresh method and system
Aqueous composition with agents to inhibit water evaporation
Neuronal differentiation-inducing peptide and use thereof
  Randomly Featured Patents
Adjustable door threshold
Drinking glass
Water-dilutable tetrapolymers of vinyl acetate, maleic diesters, crotonic acid and hydrophilic unsaturated copolymerizable esters
Control valve, and control valve for variable displacement compressor using the control valve
Railroad communication system
Point in time remote copy for multiple sites
Upper body exercise device
Method of stabilizing an electronic signal integrator
System and method for scheduling reservation of traffic with priority
Combination dressing hook and shoe horn