WO2001099292A3 - Perceptual modeling of media signals based on local contrast and directional edges - Google Patents

Perceptual modeling of media signals based on local contrast and directional edges Download PDF

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Publication number
WO2001099292A3
WO2001099292A3 PCT/US2001/019303 US0119303W WO0199292A3 WO 2001099292 A3 WO2001099292 A3 WO 2001099292A3 US 0119303 W US0119303 W US 0119303W WO 0199292 A3 WO0199292 A3 WO 0199292A3
Authority
WO
WIPO (PCT)
Prior art keywords
image
local contrast
model
signals based
media signals
Prior art date
Application number
PCT/US2001/019303
Other languages
French (fr)
Other versions
WO2001099292A2 (en
Inventor
Brett T Hannigan
Alastair M Reed
Brett Alan Bradley
Original Assignee
Digimarc Corp
Brett T Hannigan
Alastair M Reed
Brett Alan Bradley
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US09/596,658 external-priority patent/US6631198B1/en
Application filed by Digimarc Corp, Brett T Hannigan, Alastair M Reed, Brett Alan Bradley filed Critical Digimarc Corp
Priority to AU2001269864A priority Critical patent/AU2001269864A1/en
Publication of WO2001099292A2 publication Critical patent/WO2001099292A2/en
Publication of WO2001099292A3 publication Critical patent/WO2001099292A3/en

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0021—Image watermarking
    • G06T1/0028—Adaptive watermarking, e.g. Human Visual System [HVS]-based watermarking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32154—Transform domain methods
    • H04N1/3216—Transform domain methods using Fourier transforms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32154—Transform domain methods
    • H04N1/32165—Transform domain methods using cosine transforms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32154—Transform domain methods
    • H04N1/3217—Transform domain methods using wavelet transforms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32154—Transform domain methods
    • H04N1/32187—Transform domain methods with selective or adaptive application of the additional information, e.g. in selected frequency coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/32—Circuits or arrangements for control or supervision between transmitter and receiver or between image input and image output device, e.g. between a still-image camera and its memory or between a still-image camera and a printer device
    • H04N1/32101—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title
    • H04N1/32144—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title embedded in the image data, i.e. enclosed or integrated in the image, e.g. watermark, super-imposed logo or stamp
    • H04N1/32149—Methods relating to embedding, encoding, decoding, detection or retrieval operations
    • H04N1/32154—Transform domain methods
    • H04N1/32187—Transform domain methods with selective or adaptive application of the additional information, e.g. in selected frequency coefficients
    • H04N1/32192—Transform domain methods with selective or adaptive application of the additional information, e.g. in selected frequency coefficients according to calculated or estimated visibility of the additional information in the image
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2201/00—General purpose image data processing
    • G06T2201/005—Image watermarking
    • G06T2201/0051—Embedding of the watermark in the spatial domain

Abstract

A perceptual model performs an analysis of a media signal (100), such as an image or audio signal. The model may be used in media signal processing applications such as digital watermarking and data compression to reduce perceptibility of changes made to code the signal. By comparing the local image strength of various directionally filtered various of the image, the model creates a directional control vector (110). The model takes into account the local contrast (106) of the image and the directional control vector to create a gain vector.
PCT/US2001/019303 2000-06-19 2001-06-14 Perceptual modeling of media signals based on local contrast and directional edges WO2001099292A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2001269864A AU2001269864A1 (en) 2000-06-19 2001-06-14 Perceptual modeling of media signals based on local contrast and directional edges

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US09/596,658 2000-06-19
US09/596,658 US6631198B1 (en) 2000-06-19 2000-06-19 Perceptual modeling of media signals based on local contrast and directional edges
US09/737,609 2000-12-13
US09/737,609 US6633654B2 (en) 2000-06-19 2000-12-13 Perceptual modeling of media signals based on local contrast and directional edges

Publications (2)

Publication Number Publication Date
WO2001099292A2 WO2001099292A2 (en) 2001-12-27
WO2001099292A3 true WO2001099292A3 (en) 2002-03-21

Family

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Family Applications (1)

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PCT/US2001/019303 WO2001099292A2 (en) 2000-06-19 2001-06-14 Perceptual modeling of media signals based on local contrast and directional edges

Country Status (3)

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US (5) US6633654B2 (en)
AU (1) AU2001269864A1 (en)
WO (1) WO2001099292A2 (en)

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