Facsimile and static presentation processing – Static presentation processing – Attribute control
Reexamination Certificate
2011-07-26
2011-07-26
Rogers, Scott A (Department: 2625)
Facsimile and static presentation processing
Static presentation processing
Attribute control
C358S003260, C358S003280
Reexamination Certificate
active
07986441
ABSTRACT:
System and methodologies are provided herein for low-distortion image watermarking. Parity relationships between multiple pixels and/or regions of an image can be leveraged as described herein to reduce the amount of toggling required to embed a watermark in an image, thereby increasing watermark efficiency and reducing visual artifacts introduced in a watermarked image. Various algorithms for leveraging parity relationships are described herein, including a Block-Overlapping Parity Check (BOPC) algorithm, a Champagne Pyramid Parity Check (CPPC) algorithm, and a Tree-Based Parity Check (TBPC) algorithm.
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Au Oscar Chi Lim
Li Richard Yuk Ming
Rogers Scott A
Turocy & Watson LLP
Wong Technologies L.L.C.
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