Seoul National University

Hanwha Techwin Co., Ltd.

Kwang Moo Yi

Jin Young Choi

Jeong-Eun Lim

Jeong Eun Lim

Dong Jun Park

Young Joon Yoo

Il-Kwon Chang

Sun-Jung Kim

Ha Wook Jeong

Soo-Wan Kim

Ki-Min Yun

An apparatus for detecting an object includes a filter for filtering a current input image and a background model generated based on a previous input image, a homography matrix estimation unit for estimating a homography matrix between the current input image and the background model, an image alignment unit for converting the background model by applying the homography matrix to a filtered background model and aligning a converted background model and a filtered current input image, and a foreground/background detection unit for detecting a foreground by comparing corresponding pixels between the converted background model and the filtered current input image.

Apparatus and method for detecting object using PTZ camera

Provided are a method and apparatus for detecting an abnormal movement. The apparatus includes a feature tracing unit configured to extract features of a moving object in an input image, trace a variation in position of the extracted features according to time, and ascertain trajectories of the extracted features; a topic online learning unit configured to classify the input image in units of documents which are bundles of the trajectories, and ascertain probability distribution states of topics, which constitute the classified document, by using an online learning method which is a probabilistic topic model; and a movement pattern online learning unit configured to learn a velocity and a direction for each of the ascertained topics, and learn a movement pattern by inferring a spatiotemporal correlation between the ascertained topics.

Method and apparatus for detecting abnormal movement

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Seoul, South Korea

Kwang Moo Yi