Assigning tags to media files

US9424258B2 · kind B2 · utility

Assignee

• Telefonaktiebolaget LM Ericsson (Publ) · SE

Inventors

• Joakim Söderberg · San Francisco, US
• Che Zhong · Solna, SE

Key dates

• Filing date: Sep 8, 2011
• Grant date: Aug 23, 2016
• Expiry date: Apr 2, 2032

Classification

• Technology area (CPC G): Physics
• CPC primary: G06F16/78
• WIPO field: Computer technology
• WIPO sector: Electrical engineering

Abstract

There is described a device and method for assigning a tag to a media file associated with metadata describing features of the media file. The metadata is converted into a query feature vector associated with the media file. A weighted distance is calculated between the query vector and each of a plurality of tag feature vectors, where each tag feature vector is included in a tag instance stored in a database, each tag instance further comprising a tag and a weight vector. The weighted distance is determined by comparing each feature of the query vector with the corresponding feature in the tag feature vector to obtain an initial distance value for that feature, modifying the initial distance value by a weight for that feature obtained from the weight vector in the tag instance to obtain a comparison value for that feature, and combining the comparison values of all of the features to obtain the weighted distance. Those tag instances whose tag feature vectors have the smallest weighted distance from the query vector are selected. The user chooses one or more of the selected tags, which are then associated with the media file. The weight for each feature in the weight vectors in the…