Multimedia data retrieval device and method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorTakanori Senoh
Life of this patent
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Abstract
The multimedia data retrieval device of this invention includes: a content storage section for storing a plurality of compressed contents; a client terminal for inputting feature data, a feature data storage section for reading feature data extracted from at least one of the compressed contents from the content storage section and storing the feature data of the at least one compressed contents; and a content retrieval section for selecting feature data approximate to the feature data input via the client terminal among the feature data stored in the feature data storage section, and retrieving a content having the selected feature data from the content storage section.
Claims15
A multimedia data retrieval device comprising:
- a content storage section for storing a plurality of compressed contents;
- a client terminal for inputting feature data;
- a feature data storage section for reading feature data extracted from at least one of the compressed contents from the content storage section and storing the feature data of the at least one compressed contents;
- and
- a content retrieval section for selecting feature data approximate to the feature data input via the client terminal among the feature data stored in the feature data storage section, and retrieving a content having the selected feature data from the content storage section,
- wherein the feature data extracted from a compressed content is extracted from a part of a compressed component of the compressed content without fully decompressing the compressed content,
- wherein each of the compressed contents includes a plurality of macro blocks representing an image shape, motion vectors of an object represented by macro block motion information are read to obtain an average of the motion vectors of the object, and the average is used as feature data of motion information of the object represented by the content.
A multimedia data retrieval method comprising the steps of:
- storing a plurality of compressed contents;
- inputting feature data via a client terminal;
- reading feature data extracted from the compressed contents and storing the feature data of the compressed contents;
- and
- selecting feature data approximate to the feature data input via the client terminal among the stored feature data, and retrieving a content having the selected feature data from the stored contents,
- wherein the data input by the client terminal is either manually generated data or data in the same format of the stored feature data
- wherein the feature data extracted from a compressed content is extracted from a part of a compressed component of the compressed content without fully decompressing the compressed content,
- wherein each of the compressed contents includes a plurality of macro blocks representing an image shape, motion vectors of an object represented by macro block motion information are read to obtain an average of the motion vectors of the object, and the average is used as feature data of motion information of the object represented by the content.
Dependencies are inferred from the claim text.