Resources Contact Us Home
Method and system for watermark detection

Image Number 4 for United States Patent #7133536.

A system and method of detecting and authenticating a watermark on a document such as a check which is supposed to include a watermark having known characteristics to verify the authenticity of the document. A digitized image of the document is stored and processed through transformation which generates a frequency distribution. That frequency distribution is processed to determine one or more harmonic compared to a stored value associated with the document to determine that a watermark exists and it is the correct watermark.

  Recently Added Patents
Automated macular pathology diagnosis in three-dimensional (3D) spectral domain optical coherence tomography (SD-OCT) images
Advocate for facilitating verification for the online presence of an entity
Haloalky -substituted amides as insecticides and acaricides
Scattering spectroscopy employing hotspot-aligned nanopores
Surveillance apparatus and method for wireless mesh network
Blended block copolymer composition
  Randomly Featured Patents
Semiconductor probe having wedge shape resistive tip and method of fabricating the same
Pulse width regulator for a pulsed neutron source
Process for producing very fine denier synthetic fibers
Method for recording data on optical recording medium
Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal
Therapeutic and diagnostic compositions
Metering device for the inhalation of a pulverulent substance
Finger attachable spray device
Game machine with automated tournament mode
Racket handle