WO2008130182A1 - Method and apparatus for retrieving multimedia contents - Google Patents

Method and apparatus for retrieving multimedia contents Download PDF

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Publication number
WO2008130182A1
WO2008130182A1 PCT/KR2008/002285 KR2008002285W WO2008130182A1 WO 2008130182 A1 WO2008130182 A1 WO 2008130182A1 KR 2008002285 W KR2008002285 W KR 2008002285W WO 2008130182 A1 WO2008130182 A1 WO 2008130182A1
Authority
WO
WIPO (PCT)
Prior art keywords
indicator
query
user query
multimedia contents
mpeg
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/KR2008/002285
Other languages
English (en)
French (fr)
Inventor
Hee-Cheol Seo
Mi-Ran Choi
Hyun-Ki Kim
Myung-Gil Jang
Jeong Heo
Soo-Jong Lim
Yeo-Chan Yoon
Kyoung-Ro Yoon
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.)
Electronics and Telecommunications Research Institute ETRI
University Industry Cooperation Corporation of Konkuk University
Original Assignee
Electronics and Telecommunications Research Institute ETRI
University Industry Cooperation Corporation of Konkuk University
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
Application filed by Electronics and Telecommunications Research Institute ETRI, University Industry Cooperation Corporation of Konkuk University filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to CN2008800173376A priority Critical patent/CN101720462B/zh
Priority to US12/597,158 priority patent/US8577919B2/en
Priority to EP08753141A priority patent/EP2143027A4/en
Priority to JP2010506044A priority patent/JP5426533B2/ja
Publication of WO2008130182A1 publication Critical patent/WO2008130182A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/40Information retrieval; Database structures therefor; File system structures therefor of multimedia data, e.g. slideshows comprising image and additional audio data
    • G06F16/48Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/50Information retrieval; Database structures therefor; File system structures therefor of still image data
    • G06F16/58Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • G06F16/587Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually using geographical or spatial information, e.g. location
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/60Information retrieval; Database structures therefor; File system structures therefor of audio data
    • G06F16/63Querying
    • G06F16/632Query formulation
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/60Information retrieval; Database structures therefor; File system structures therefor of audio data
    • G06F16/68Retrieval characterised by using metadata, e.g. metadata not derived from the content or metadata generated manually
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F16/00Information retrieval; Database structures therefor; File system structures therefor
    • G06F16/70Information retrieval; Database structures therefor; File system structures therefor of video data

Definitions

  • the present invention relates to an apparatus and method for retrieving multimedia contents; and, more particularly, to multimedia contents retrieving apparatus that can retrieve multimedia contents represented based on Moving Picture Experts Group 7 (MPEG-7) by transforming a user query into an MPEG-7 query format, and a method thereof.
  • MPEG-7 Moving Picture Experts Group 7
  • Moving Picture Experts Group 7 is an international standardization on the architectures of metadata representing multimedia information, such as image, audio and moving picture.
  • An MPEG-7 query format is used to retrieve multimedia contents represented based on the MPEG-7.
  • An MPEG-7 multimedia contents retrieving system retrieves multimedia contents related to a query inputted in an MPEG-7 query format.
  • the MPEG-7 query format defines syntaxes for retrieving MPEG-7 documents.
  • the syntaxes can represent diverse types of queries that can be used for the retrieval of MPEG-7 documents. For example, they can represent not only natural sentence-type query such as "an image with mountain” but also example-based query using a multimedia file as a query and MPEG-7 textual description-based query.
  • An embodiment of the present invention which is invented to resolve the problem, is directed to providing a Moving Picture Experts Group 7 (MPEG-7) query format that can satisfy more than two retrieval conditions within the same structure and clearly represent that different MPEG-7 documents are referred to.
  • MPEG-7 Moving Picture Experts Group 7
  • Another embodiment of the present invention is directed to providing an apparatus and method that can accurately retrieve multimedia contents by precisely analyzing the meaning of a user query in a retrieving process .
  • a method for retrieving multimedia contents which includes: representing a user query by using an indicator indicating a specific region of a Moving Picture Experts Group 7 (MPEG-7) document and a reference for referring to the indicator; analyzing a meaning of the user query represented by using the indicator and the reference to thereby produce an analysis result; and retrieving multimedia contents according to the analysis result.
  • MPEG-7 Moving Picture Experts Group 7
  • a method for processing a user query to retrieve multimedia contents which includes: receiving a query for retrieving multimedia contents from a user; representing the user query by using an indicator for indicating a specific region of an MPEG-7 document and a reference for referring to the indicator .
  • an apparatus for retrieving multimedia contents which includes: a query input unit for receiving a query for retrieving multimedia contents from a user; a query representation unit for representing the user query inputted through the query input unit by using an indicator for indicating a specific region of an MPEG-7 document and a reference for referring to the indicator; a query analysis unit for analyzing a meaning of the user query represented in the query representation unit by using the indicator and the reference to thereby produce an analysis result; and a contents retrieval unit for retrieving multimedia contents according to the analysis result.
  • a data structure for representing a user query to retrieve multimedia contents which includes: an indicator for indicating a specific region of an MPEG-7 document; and a reference for referring to the indicator.
  • the present invention described above provides an MPEG-7 query format that can satisfy more than two retrieval conditions within the same structure and clearly represent that different MPEG-7 documents are referred to. Also, since the meaning of a user query is precisely analyzed during a retrieving process, it is possible to retrieve multimedia contents that accurately agree with the user query.
  • Fig. 1 is a flowchart describing a multimedia contents retrieving method in accordance with an embodiment of the present invention.
  • Fig. 2 illustrates an extensible Markup Language (XML) schema of an indicator in accordance with an embodiment of the present invention.
  • Fig. 3 illustrates an XML schema of a reference in accordance with an embodiment of the present invention.
  • XML extensible Markup Language
  • Fig. 4 is a flowchart describing a query representation step SlO of Fig. 1 in detail.
  • Fig. 5 is a flowchart describing a query processing step S20 of Fig. 1 in detail.
  • Fig. 6 illustrates an XML schema of an indicator in accordance with another embodiment of the present invention .
  • Fig. 7 is a block view showing a structure of multimedia contents retrieving apparatus in accordance with an embodiment of the present invention.
  • Fig. 1 is a flowchart describing a multimedia contents retrieving method in accordance with an embodiment of the present invention.
  • a user query is represented as a query for retrieving multimedia contents.
  • the user query is represented using an indicator and a reference for referring to the indicator to precisely represent the meaning of the user query.
  • the indicator denotes a specific region of a Moving Picture Experts Group 7 (MPEG-7) document, and the reference is used to refer to the indicator.
  • MPEG-7 Moving Picture Experts Group 7
  • the reference is used to refer to the indicator.
  • MPEG-7 Moving Picture Experts Group 7
  • two indicators may be established for two different MPEG-7 documents, respectively, and each of the two indicators may have references to clearly represent the two different MPEG-7 documents from each other.
  • a query processor analyzes the user query represented using the indicator and references.
  • a retrieval engine retrieves multimedia contents related to the user query analyzed in the query processor and, in step S40, provides a retrieval result.
  • Fig. 2 illustrates an extensible Markup Language (XML) schema of an indicator in accordance with an embodiment of the present invention.
  • an indicator includes an indicator identification (ID) number 101, an indicator region descriptor 102, and an indicator limiting descriptor 103.
  • the indicator region descriptor 102 may include a reference 104 for referring to another indicator.
  • the indicator limiting descriptor 103 includes a part 105 describing conditions for limiting an indicator.
  • An MPEG-7 document is described in an XML format, and an indicator indicates a specific region of the MPEG- 7 document.
  • the indicator region descriptor 102 is used to designate an uppermost node of the specific region.
  • the indicator limiting descriptor 103 is used when an additional limiting condition is needed in connection with a region represented by indicator region descriptor.
  • the indicator ID number 101 is used when an indicator is referred to.
  • Table 1 shows Fig. 2 described in the format of an XML schema.
  • a "path” element is a part for describing an indicator region
  • a “selector” element is a part for describing limitation of an indicator.
  • the “id” denotes the unique number of an indicator.
  • a "ref” attribute is used.
  • "ConditionalType” is defined as a limiting condition to describe specific condition.
  • Fig. 3 illustrates an XML schema of a reference in accordance with an embodiment of the present invention.
  • An indicator may refer to a specific indicator, and it is possible to refer to a node inside a specific region which is indicated by the indicator.
  • an indicator may include a "ref” attribute for referring to a specific indicator, and represent a region related to the indicator by the attribute value.
  • XML schema related to Fig. 3 may be described as the following Table 2, where the "ref” attribute refers to the indicator and "xPathType" describes a part related to the indicator.
  • Fig. 4 is a flowchart describing a query representation step SlO of Fig. 1 in detail.
  • step S402 a query for retrieving multimedia contents is inputted from a user.
  • step S404 the inputted user query is represented as an indicator for indicating a specific region of an MPEG-7 document and a reference for referring to the indicator.
  • a query for "retrieving images whose horizontal length X vertical length is greater than 1024X768" can be represented as the following Table 3 based on the XML schema defined in the Tables 1 and 2.
  • Table 3 an indicator is referred to by using a reference “href,” and a specific part related to a region indicated by the indicator can be indicated by describing an additional path.
  • Fig. 5 is a flowchart describing a query processing step S20 of Fig. 1 in detail.
  • the meaning of the user query represented using an indicator and a reference is analyzed in the query processing step S20.
  • an XML parser parses a user query described in an XML format.
  • the indicator and the reference are processed based on a parsing result.
  • the meaning of the user query is analyzed using the processed indicator and reference.
  • references referring to the same indicator are regarded as values for referring to a value in the inside of the same region to analyze the meaning of the user query. For example, since “ ⁇ height” and “ ⁇ width” refer to "VisualCodingFramelD" in the user query, it is analyzed that the two refer to a value in the inside a region indicated by the "VisualCodingFramelD. "
  • Fig. 6 illustrates an XML schema of an indicator in accordance with another embodiment of the present invention.
  • An indicator ID number 601 is the same as the indicator ID number 101 of Fig. 2.
  • An indicator region descriptor of Fig. 6 is an optional element whereas an indicator limiting descriptor 603 is essential element, and it does not have "attribute.”
  • Fig. 6 may be described in an XML schema, which is presented in the following Table 4.
  • FIG. 7 is a block view showing a structure of multimedia contents retrieving apparatus in accordance with an embodiment of the present invention.
  • the multimedia contents retrieving apparatus 700 includes a query input unit 702, a query representation unit 704, a query analysis unit 706, a contents retrieval unit 708, and an output unit 710.
  • the query input unit 702 receives a query for retrieving multimedia contents from a user.
  • the query representation unit 704 represents the user query inputted through the query input unit 702 into an MPEG-7 query format by using an indicator indicating a specific region of an MPEG-7 document and a reference for referring to the indicator.
  • An indicator includes an indicator ID number used for a reference to refer to the indicator, a descriptor for describing limiting conditions for the region indicated by the indicator, and a descriptor for designating an uppermost node of the region indicated by the indicator.
  • the user query is represented in an XML format.
  • the query analysis unit 706 analyzes the meaning of the user query represented using the indicator and the reference in the query representation unit 704.
  • the query analysis unit 706 includes an XML parser 712 for parsing a user query, a descriptor processor 714 for processing an indicator and a reference based on the parsing result of the XML parser 712, and a meaning analyzer 716 for analyzing the meaning of the user query based on the indicator and the reference processed in the descriptor processor 714.
  • the contents retrieval unit 708 retrieves multimedia contents according to the analysis result of the user query analysis unit 706.
  • the contents retrieval unit 708 may retrieve a database 718 or search the internet 722 through a communication unit 720.
  • the database 718 may be set up inside or outside the multimedia contents retrieving apparatus 700.
  • the output unit 710 provides multimedia contents retrieved by the contents retrieval unit 708 to the user.
  • the method of the present invention described above may be realized as a program and stored in a computer-readable recording medium, such as CD-ROM, RAM, ROM, floppy disks, hard disks, magneto-optical disks and the like. Since this process can be easily implemented by those skilled in the art to which the present invention belongs, further description will not be provided herein.
  • a computer-readable recording medium such as CD-ROM, RAM, ROM, floppy disks, hard disks, magneto-optical disks and the like. Since this process can be easily implemented by those skilled in the art to which the present invention belongs, further description will not be provided herein.

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Data Mining & Analysis (AREA)
  • Databases & Information Systems (AREA)
  • General Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Library & Information Science (AREA)
  • Mathematical Physics (AREA)
  • Information Retrieval, Db Structures And Fs Structures Therefor (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
PCT/KR2008/002285 2007-04-23 2008-04-23 Method and apparatus for retrieving multimedia contents Ceased WO2008130182A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CN2008800173376A CN101720462B (zh) 2007-04-23 2008-04-23 用于检索多媒体内容的方法和设备
US12/597,158 US8577919B2 (en) 2007-04-23 2008-04-23 Method and apparatus for retrieving multimedia contents
EP08753141A EP2143027A4 (en) 2007-04-23 2008-04-23 METHOD AND DEVICE FOR RECALLING MULTIMEDIA CONTENT
JP2010506044A JP5426533B2 (ja) 2007-04-23 2008-04-23 マルチメディアコンテンツを検索する方法及び装置

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR10-2007-0039475 2007-04-23
KR20070039475 2007-04-23
KR10-2008-0035896 2008-04-18
KR1020080035896A KR100961444B1 (ko) 2007-04-23 2008-04-18 멀티미디어 콘텐츠를 검색하는 방법 및 장치

Publications (1)

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WO2008130182A1 true WO2008130182A1 (en) 2008-10-30

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PCT/KR2008/002285 Ceased WO2008130182A1 (en) 2007-04-23 2008-04-23 Method and apparatus for retrieving multimedia contents

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US (1) US8577919B2 (https=)
EP (1) EP2143027A4 (https=)
JP (1) JP5426533B2 (https=)
KR (1) KR100961444B1 (https=)
CN (1) CN101720462B (https=)
WO (1) WO2008130182A1 (https=)

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CN109582763B (zh) * 2017-09-27 2023-08-22 韩国电子通信研究院 运动图像专家组媒体物联网环境中的答疑系统及方法

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Also Published As

Publication number Publication date
JP2010528347A (ja) 2010-08-19
KR20080095180A (ko) 2008-10-28
CN101720462B (zh) 2012-11-07
US20100131557A1 (en) 2010-05-27
EP2143027A4 (en) 2010-05-05
EP2143027A1 (en) 2010-01-13
JP5426533B2 (ja) 2014-02-26
CN101720462A (zh) 2010-06-02
KR100961444B1 (ko) 2010-06-09
US8577919B2 (en) 2013-11-05

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