Methods for controlling systems using control signals embedded in empirical data

  • US 5,832,119 A
  • Filed: 09/25/1995
  • Issued: 11/03/1998
  • Est. Priority Date: 11/18/1993
  • Status: Expired due to Term
First Claim
Patent Images

1. A method of using an input image signal to control operation of a system, comprising:

  • discerning, from said input image signal, an N-bit code signal steganographically encoded therein, where N is greater than or equal to two, said discerning including performing an algorithmic registration process to resolve an initially unknown variable needed to discern the code signal from the input image signal, said input image signal corresponding to an originally encoded image corrupted by scaling and/or rotation processes, wherein the N-bit code signal is discerned notwithstanding said corruption; and

    controlling an operation of the system in accordance with the code signal discerned from the input image signal.

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