Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2004-10-13
2008-11-18
Smithers, Matthew B (Department: 2137)
Information security
Prevention of unauthorized use of data including prevention...
Access control
C713S176000
Reexamination Certificate
active
07454797
ABSTRACT:
Systems and methods for secure multimedia authentication with discrete level tamper localization are described. In these aspects, the term “discrete” means that tamper localization is at the pixel level with respect to an image or video data, or at the sample level with respect to audio data. More particularly, and in one aspect, multimedia is evaluated to determine authenticity of the multimedia. This evaluation is based on data block(s). Responsive to determining that the multimedia is not authentic, a tampered portion of the multimedia is localized by addressing each respective pixel or sample of the tampered portion.
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Li Shipeng
Wu Jinhai
Zhu Bin
Lee & Hayes PLLC
Microsoft Corporation
Smithers Matthew B
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