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Patent Portfolio
Patent Portfolio
DIGITAL WATERMARKS AND TRADING CARDS
6,735,324
PROGRESSIVE WATERMARK DECODING ON A DISTRIBUTED COMPUTING PLATFORM
6,724,914
DIGITAL WATERMARKING OF PHYSICAL OBJECTS
6,724,912
LOW VISIBILITY WATERMARKS USING AN OUT-OF-PHASE COLOR
6,721,440
WAVELET BASED FEATURE MODULATION WATERMARKS AND RELATED APPLICATIONS
6,714,683
EXTRACTING DIGITAL WATERMARKS USING LOGARITHMIC SAMPLING AND SYMMETRICAL ATTRIBUTES
6,704,869
APPLYING DIGITAL WATERMARKS USING DOT GAIN CORRECTION
6,700,995
METHODS FOR DETERMINING CONTENTS OF MEDIA
6,694,042
HALFTONE WATERMARKING AND RELATED APPLICATIONS
6,694,041
WATERMARKING RECURSIVE HASHES INTO FREQUENCY DOMAIN
6,683,966
METHOD AND SYSTEM FOR RECOGNIZING SECURITY DOCUMENTS
6,674,886
WATERMARKING IN THE TIME-FREQUENCY DOMAIN
6,674,876
IMAGE MANAGEMENT SYSTEMS AND METHODS USING DIGITAL WATERMARKS
6,664,976
WATERMARKED BUSINESS CARDS AND METHODS
6,650,761
METHODS AND SYSTEMS USING MULTIPLE WATERMARKS
6,636,615
PERCEPTUAL MODELING OF MEDIA SIGNALS BASED ON LOCAL CONTRAST AND DIRECTIONAL EDGES
6,633,654
PERCEPTUAL MODELING OF MEDIA SIGNALS BASED ON LOCAL CONTRAST AND DIRECTIONAL EDGES
6,631,198
STOCHASTIC SCANNING DOCUMENTS TO CHANGE MOIRE EFFECTS
6,631,015
METHOD AND APPARATUS FOR ENCODING PAPER WITH INFORMATION
6,608,919
DIGITALLY WATERMARKING HOLOGRAMS FOR USE WITH SMART CARDS
6,608,911
MULTI-CARRIER WATERMARKS USING CARRIER SIGNALS MODULATED WITH AUXILIARY MESSAGES
6,594,373
COLOR ADAPTIVE WATERMARKING
6,590,996
QUANTIZATION-BASED DATA HIDING EMPLOYING CALIBRATION AND LOCALLY ADAPTIVE QUANTIZATION
6,580,809
WATERMARK-BASED OBJECT LINKING AND EMBEDDING
6,577,746
METHODS FOR EVIDENCING ILLICIT USE OF A COMPUTER SYSTEM OR DEVICE
6,549,638
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