Derivation and quantization of robust non-local characteristics for blind watermarking

• US 20060059356A1
• Filed: 11/03/2005
• Published: 03/16/2006
• Est. Priority Date: 04/24/2001
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Corporation
• Inventors: Venkatesan, Ramarathnam, Jakubowski, Mariusz H., Mihcak, M. Kivanc
• Granted Patent: US 7,188,249 B2
• Time in Patent Office: Days
• US Class Current: 713/176
• CPC Class Codes: G06F 21/16 Program or content traceability, e.g. by watermarking
• CPC Class Codes: G06T 1/005 Robust watermarking, e.g. average attack or collusion attack resistant
• CPC Class Codes: G06T 2201/0052 Embedding of the watermark in the frequency domain
• CPC Class Codes: G06T 2201/0065 Extraction of an embedded watermark; Reliable detection
• CPC Class Codes: G06T 2201/0083 whereby only watermarked image required at decoder, e.g. source-based, blind, oblivious
• CPC Class Codes: H04L 2463/101 applying security measures for digital rights management data processing systems or methods, specially adapted for commerce, e.g. marketing, shopping, billing, auctions or e-commerce G06Q30/00
• CPC Class Codes: H04L 63/1441 Countermeasures against malicious traffic countermeasures against attacks on cryptographic mechanisms H04L9/002
• CPC Class Codes: H04N 1/32144 embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
• CPC Class Codes: H04N 1/32149 Methods relating to embedding, encoding, decoding, detection or retrieval operations
• CPC Class Codes: H04N 1/32154 Transform domain methods H04N1/32309 takes precedence
• CPC Class Codes: H04N 1/3217 using wavelet transforms
• CPC Class Codes: H04N 1/32187 with selective or adaptive application of the additional information, e.g. in selected frequency coefficients
• CPC Class Codes: H04N 1/32277 Compression
• CPC Class Codes: H04N 1/3232 Robust embedding or watermarking
• CPC Class Codes: H04N 1/32341 Blind embedding, i.e. the original image not being known beforehand
• CPC Class Codes: H04N 21/8358 involving watermark protecting executable software by watermarking G06F21/16; image watermarking in general G06T1/0021; watermarks inserted in still images for transmission purposes H04N1/32144; inserting watermarks during video coding H04N19/467
• CPC Class Codes: H04N 2201/3233 of authentication information, e.g. digital signature, watermark
• CPC Class Codes: H04N 2201/327 which are undetectable to the naked eye, e.g. embedded codes

Abstract

An implementation of a technology is described herein for deriving robust non-local characteristics and quantizing such characteristics for blind watermarking of a digital good.

Claims

1. A computing apparatus for facilitating the protection of digital signals comprising:

a processor; and

a memory configured to maintain one or more module executable on the processor to;

obtain a digital signal; and

using quantization index modulation (QIM), detect whether the signal includes a watermark, wherein such QIM utlilizes non-local characteristics of the signal and

wherein the non-local characteristics comprise statistics representative of one or more pseudorandomly dimensioned segments of the signal.

2. A computing apparatus as recited in claim 1, wherein the one or more pseudorandomly dimensioned segments of the signal are adjacent and non-contiguous.

3. A system for facilitating the protection of digital signals comprising:

means for obtaining a digital signal;

the signal being composed of multiple segments;

means for detecting whether the signal includes a watermark using quantization index modulation (QIM), wherein such QIM utilizes non-local characteristics of the signal and

wherein the non-local characteristics comprise statistics representative of one or more pseudorandomly dimensioned segments of the signal.

4. A system as recited in claim 3, wherein the one or more pseudorandomly dimensioned segments of the signal are adjacent and non-contiguous.

5. One or more computer readable media having computer executable instruction that, when executed by a computer, perform acts comprising:

obtaining a digital signal;

the signal being composed of multiple segments;

using quantization index modulation, detecting whether the signal includes a watermark, wherein such QIM utilizes non-local characteristics of the signal and

wherein the non-local characteristics comprise statistics representative of one or more pseudorandomly dimensioned segments of the signal.

6. One or more media as recited in claim 5, wherein the one or more pseudorandomly dimensioned segments of the signal are adjacent and non-contiguous.