Synthetic audiovisual description scheme, method and system for MPEG-7
First Claim
1. A method of generating a description of synthetic audiovisual data, the method comprising:
- extracting at least one feature of the synthetic audiovisual data;
representing the extracted at least one feature using at least one descriptor selected according to a synthetic audiovisual description scheme;
assigning at least one descriptor value to the at least one descriptor based on the extracted at least one feature; and
generating the synthetic audiovisual data description based on the at least one descriptor values and the synthetic audiovisual description scheme, wherein the synthetic audiovisual description scheme specifies a structure and semantics of relationships between its components, which include descriptors.
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Abstract
A method and system for description of synthetic audiovisual content makes it easier for humans, software components or devices to identify, manage, categorize, search, browse and retrieve such content. For instance, a user may wish to search for specific synthetic audiovisual objects in digital libraries, Internet web sites or broadcast media; such a search is enabled by the invention. Key characteristics of synthetic audiovisual content itself such as the underlying 2d or 3d models and parameters for animation of these models are used to describe it. More precisely, to represent features of synthetic audiovisual content, depending on the description scheme to be used, a number of descriptors are selected and assigned values. The description scheme instantiated with descriptor values is used to generate the description, which is then stored for actual use during query/search. Typically, a user, to search for a needed synthetic audiovisual content initiates a query that is passed on to a search engine that then retrieves the candidate content from one or more databases whose description closely matches the query criteria specified by the user.
130 Citations
33 Claims
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1. A method of generating a description of synthetic audiovisual data, the method comprising:
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extracting at least one feature of the synthetic audiovisual data;
representing the extracted at least one feature using at least one descriptor selected according to a synthetic audiovisual description scheme;
assigning at least one descriptor value to the at least one descriptor based on the extracted at least one feature; and
generating the synthetic audiovisual data description based on the at least one descriptor values and the synthetic audiovisual description scheme, wherein the synthetic audiovisual description scheme specifies a structure and semantics of relationships between its components, which include descriptors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A system that generates a description of synthetic audiovisual data, the system comprising:
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a feature extractor that extracts at least one feature of the synthetic audiovisual data;
a feature representor that represents the extracted at least one feature using at least one descriptor selected according to a synthetic audiovisual description scheme and assigns at least one descriptor value to the at least one descriptor based on the extracted at least one feature; and
a synthetic audiovisual data description generator that generates the synthetic audiovisual data description based on the at least one descriptor values and the synthetic audiovisual description scheme, wherein the synthetic audiovisual description scheme specifies a structure and semantics of relationships between its components, which include descriptors. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
at least one server including the system that generates a description of synthetic audiovisual data recited in claim 21, coupled to a synthetic audiovisual data description database and a synthetic audiovisual data database; and
at least one client terminal coupled to the at least server via a network and including a synthetic audiovisual data query interface, search tools and a synthetic audiovisual data browser, wherein, a synthetic audiovisual data query input through the query interface is used by the search tools to map the query to pseudo features, these pseudo features being transmitted to the at least one server over the network, and wherein, the at least one server maps the pseudo features received over the network to pseudo description that is used by the search engine to access synthetic audiovisual data descriptions stored in the description database.
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31. The system of claim 30, wherein the search engine retrieves synthetic audiovisual data stored in the synthetic audiovisual data database based on at least one description.
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32. The system of claim 31, wherein the search engine transmits the retrieved synthetic audiovisual content to the client terminal via the network.
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33. The system of claim 31, wherein the at least one description is stored in the synthetic audiovisual description database.
Specification