Patent ID: 6785429
Filing Date: 2004-08-31
Classification: G06F,Y10S

Abstract:
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.