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Patent classifications
G
PHYSICS
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G06
COMPUTING OR CALCULATING; COUNTING
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G06T
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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1/00
General purpose image data processing
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G06T1/0021
Image watermarking
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G06T1/005
Robust watermarking, e.g. average attack or collusion attack resistant
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G06T1/0071
using multiple or alternating watermarks
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