Samsung Electronics Co., Ltd.

Seoul National University

Jong In Lim

Dong Hoon Lee

Jin Young Choi

Jung Yeon Hwang

Tae-Chul Jung

Jong Hwan Park

Weon Il Jin

Maeng Hee Sung

Baeeun Jung

Kyu Young Ohoi

Ki Min Yun

Heejean Kim

An apparatus and method for detecting a foreground in an image is provided, and the foreground detecting apparatus includes a context information estimator configured to estimate context information on a scene from an image frame of the image, a background model constructor configured to construct a background model of the image frame using the estimated context information, and a foreground detector configured to detect a foreground from the image frame based on the constructed background model.

Apparatus and method for detecting foreground in image

A broadcast encryption method and a broadcast decryption method. The broadcast encryption method includes generating a message encryption key using a public key and a secret key generated by using a Strong Diffie-Hellman tuple; encrypting a message by the message encryption key; and generating a message header using a sum of a plurality of Strong Diffie-Hellman tuples corresponding to an authorized user group. Accordingly, a transmission amount and a storage amount can be reduced when a broadcast encryption message is transmitted.

Broadcast encryption method and broadcast decryption method thereof

Growing community of inventors

Seoul, South Korea

Jong In Lim