Patent ID: 8340343
Filing Date: 2012-12-25
Classification: G06K,G06T

Abstract:
1. A method for embedding a spatial fingerprint in a sequence of digital video frames, the sequence including marked frames, each marked frame including marked groups, each marked group having markable positions, comprising: selecting a frame offset and a marking period, the frame offset identifying a first marked frame of the marked frames, and the marking period identifying each subsequent marked frame of the marked frames; determining a marking strength for each marked group of each marked frame; for a first subgroup of the marked groups in each marked frame, embedding a portion of the spatial fingerprint in at least one markable position of each marked group in the first subgroup based on the determined marking strength; and for a second subgroup of the marked groups in each marked frame, embedding an ordering of the portion of the spatial fingerprint to the spatial fingerprint in at least one markable position of each marked group in the second subgroup based on the determined marking strength.