WO2006017659A2 - Fast signal detection and distributed computing in portable computing devices - Google Patents

Fast signal detection and distributed computing in portable computing devices Download PDF

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Publication number
WO2006017659A2
WO2006017659A2 PCT/US2005/027735 US2005027735W WO2006017659A2 WO 2006017659 A2 WO2006017659 A2 WO 2006017659A2 US 2005027735 W US2005027735 W US 2005027735W WO 2006017659 A2 WO2006017659 A2 WO 2006017659A2
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WO
WIPO (PCT)
Prior art keywords
reader
handset
content item
identifying
signal
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/US2005/027735
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English (en)
French (fr)
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WO2006017659A3 (en
Inventor
Ravi K. Sharma
Tony F. Rodriguez
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Digimarc Corp
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Digimarc Corp
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Filing date
Publication date
Application filed by Digimarc Corp filed Critical Digimarc Corp
Priority to JP2007524987A priority Critical patent/JP5279270B2/ja
Priority to CN200580032902.2A priority patent/CN101032106B/zh
Priority to EP05783829A priority patent/EP1774686A4/en
Publication of WO2006017659A2 publication Critical patent/WO2006017659A2/en
Publication of WO2006017659A3 publication Critical patent/WO2006017659A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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    • 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
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    • 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
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    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
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    • G06F2218/00—Aspects of pattern recognition specially adapted for signal processing
    • G06F2218/08—Feature extraction
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    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
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    • H04N2201/3226—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of data relating to an image, a page or a document of identification information or the like, e.g. ID code, index, title, part of an image, reduced-size image
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    • H04N2201/327—Display, printing, storage or transmission of additional information, e.g. ID code, date and time or title of machine readable codes or marks, e.g. bar codes or glyphs which are undetectable to the naked eye, e.g. embedded codes
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    • H04W88/02—Terminal devices

Definitions

  • the invention relates to signal processing and distributing computing, particularly in portable computing devices such as mobile phones.
  • multimedia signal processing One major drain on the computing resources of a mobile phone, for example, is multimedia signal processing.
  • applications include capturing and sending photos, playing music, playing video, etc.
  • One particular application is associating various actions with multimedia content, such as linking a photo of a product in a catalog or magazine to a web site providing more information or purchase opportunities.
  • Another example is linking a picture of musician or advertisement to an action of downloading a related ring tone to a phone or downloading related music in streaming mode or file format to a mobile phone handset. Implementations of this application are described in WO00/70585 and U.S. Patent No. 6,505,160, which are hereby incorporated by reference.
  • the invention provides a reader for content identification and related content identification methods for mobile computing devices such as cellular telephone handset.
  • a reader including a reader library that reads device capabilities and business model parameters in the device, and in response, selects an appropriate configuration of reader modules for identifying a content item.
  • the reader modules each perform a function used in identifying a content item. The modules are selected so that the resources available on the device and in remote devices are used optimally, depending on available computing resources on the device and network bandwidth.
  • Fig. 1 is a diagram illustrating a mobile device handset and its communication with a network.
  • Fig. 2 is a diagram illustrating an expanded reader architecture that adapts based on device capabilities and business model parameters.
  • Fig. 5 illustrates the signal structure of Fig. 4 in the spatial domain.
  • the user interface controls basic input/output functions, including receiving input from the handset's control keys, and providing output via a display and audio output device.
  • the reader 24 processes multimedia input, such as frames of video, still images, and/or audio streams.
  • the reader library 40 is a module that controls operation based on the device and business model parameters.
  • part of the reader process is executed on the handset, and part is executed on a remote device (or multiple remote devices).
  • a remote device or multiple remote devices.
  • the nature of the data sent from the reader to a remote device depends on which functions of the reader process are executed on the handset.
  • the reader sends the content item (e.g., frames or blocks of an image or an audio clip) to a remote device for determination of its ID. This uses minimal resources on the handset, but consumes more bandwidth.
  • the fast detect may also be used in conjunction with a fingerprint identification scheme where the fast detect provides registration parameters that facilitate accurate computation of the content fingerprint.
  • the content fingerprint is a form of robust hash that is matched against a database of fingerprints to identify the content item.
  • the handset computes the content item's fingerprint using a fingerprint module.
  • a fingerprint module There are a variety of content fingerprint schemes available for video, audio and images.
  • One type of fingerprinting process is to hash features of the content, such as frequency domain features, to compute a vector of hashes that are then matched with corresponding vectors of hashes in a fingerprint database. Once a match is found, the database returns a content identifier.
  • the handset computes the fingerprint, and sends it to a database for content identification.
  • another scenario is to perform a full detect using a full detect module
  • a pre-filter may be used to de-correlate the signal being sought from the host signal.
  • a filter is used to de-correlate the digital watermark from the host signal.
  • the fast detector enables the handset to display or emit a sound when the handset is close to capturing an image with a readable watermark (or other code signal). For many users, it may be difficult to position the handset's camera at the proper angle and distance from a watermarked object, leading to frustration. However, if the fast detector is constantly running on image frames captured while the handset is moving, the positive feedback from detection of the watermark signal can help guide the user to the correct location and orientation of the camera to ensure accurate watermark recovery. The user can then be instructed via a beep or light emitted by the handset to press a capture button to ensure that the image being captured is likely to contain a recoverable watermark signal.

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Computing Systems (AREA)
  • General Physics & Mathematics (AREA)
  • Library & Information Science (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Acoustics & Sound (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Mathematical Physics (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Data Mining & Analysis (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Editing Of Facsimile Originals (AREA)
  • Telephonic Communication Services (AREA)
  • Telephone Function (AREA)
  • Mobile Radio Communication Systems (AREA)
PCT/US2005/027735 2004-08-06 2005-08-05 Fast signal detection and distributed computing in portable computing devices Ceased WO2006017659A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2007524987A JP5279270B2 (ja) 2004-08-06 2005-08-05 携帯コンピューティング装置における高速信号検出および分散コンピューティング
CN200580032902.2A CN101032106B (zh) 2004-08-06 2005-08-05 便携计算装置中的快速信号检测和分布式计算
EP05783829A EP1774686A4 (en) 2004-08-06 2005-08-05 FAST SIGNAL DETECTION AND DISTRIBUTED CALCULATION IN PORTABLE COMPUTER DEVICES

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59947904P 2004-08-06 2004-08-06
US60/599,479 2004-08-06

Publications (2)

Publication Number Publication Date
WO2006017659A2 true WO2006017659A2 (en) 2006-02-16
WO2006017659A3 WO2006017659A3 (en) 2006-11-30

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Application Number Title Priority Date Filing Date
PCT/US2005/027735 Ceased WO2006017659A2 (en) 2004-08-06 2005-08-05 Fast signal detection and distributed computing in portable computing devices

Country Status (5)

Country Link
US (4) US8694049B2 (enExample)
EP (2) EP2315423B1 (enExample)
JP (3) JP5279270B2 (enExample)
CN (1) CN101032106B (enExample)
WO (1) WO2006017659A2 (enExample)

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