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373 results about "Composition analysis" patented technology

Method and system for analyzing shopping behavior in a store by associating RFID data with video-based behavior and segmentation data

The present invention is a method and system for analyzing shopping behavior by associating RFID data, such as tracking data by the RFID tag identifications, with video-based behavior and segmentation data, such as behavior analysis and demographic composition analysis of the customers, utilizing a plurality of means for sensing and using RFID tags, a plurality of means for capturing images, and a plurality of computer vision technologies. In the present invention, the association can further comprise the association of the RFID with the transaction data or any time-based measurement in the retail space. The analyzed shopping behavior in the present invention helps people to better understand business elements in a retail space. It is one of the objectives of the present invention to provide an automatic video-based segmentation of customers in the association with the RFID based tracking of the customers, based on a novel usage of a plurality of means for capturing images and a plurality of computer vision technologies on the captured visual information of the people in the retail space. The plurality of computer vision technologies can comprise face detection, person tracking, body parts detection, and demographic classification of the people, on the captured visual information of the people in the retail space.
Owner:VIDEOMINING CORP

Wind driven generator set failure feature extracting method based on sparse decomposition

The invention discloses a wind driven generator set failure feature extracting method based on sparse decomposition. The method is used for diagnosing wind driven generator set failures and is suitable for being used for non-direct-drive-type wind driven generator sets. The method is aimed to solve the problem that failure features of a wind driven generator set vibration signal are difficult to extract due to failure feature coupling, large background noise and the like, and on the basis of a form composition analysis principle, the signal is decomposed into three compositions including harmonic waves, impact and noise by means of different sparse expression dictionaries, so that the failure features which are difficult to find outstand; experiments are carried out on a wind driven generator failure simulation experiment table, and validness is proved. The method has the advantages that the failure features which are covered by noise or other feature signals and difficult to find are extracted, accordingly a failure portion is determined, instructive suggestions are made for maintenance of a wind driven generator set and arrangement adjustment of maintenance plans, non-scheduled down time is effectively reduced and economical efficiency and social efficiency of a wind power plant are improved.
Owner:XI AN JIAOTONG UNIV
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