Recognising faces

The MPEG Committee has decided to adopt NEC and Samsung Advanced Institute of Technology’s (SAIT) jointly developed face recognition technology for the upcoming MPEG-7 standard.

The MPEG (Moving Picture Experts Group) Committee has decided to adopt NEC and Samsung Advanced Institute of Technology’s (SAIT) jointly developed face recognition technology for the upcoming MPEG-7 standard, which will be published in the spring of 2004.

MPEG-7, formally named the ‘Multimedia Content Description Interface’, differs from previous MPEG standards in that what is represented by the standard is not information itself, but information about the information – specifically, the content of a facial image.

Referred to as the MPEG-7 AFR (Advanced Face Recognition Descriptor), the NEC/SAIT technology allows facial features to be described as metadata that have an extremely small data size and that can be retrieved quickly and accurately on a PC.

For its part, NEC developed the technology to allow an accurate description of a human face to be described with a minimum data size of 253 bits, while SAIC developed the algorithms to extract facial features from each face component, such as the eyes and mouth.

The MPEG group chose the NEC/SAIT technology due to its performance in retrieval accuracy, speed, and data size. According to NEC, in use it will be possible to retrieve a scene starring a specific person in approximately one second from a 24 hour video on a standard PC.

On the web