Hanwha Techwin Co., Ltd.

Samsung Techwin Co., Ltd.

Seoul National University

Il-Kwon Chang

Jeong-Eun Lim

Eun-Ji Choi

Jin Young Choi

Sun-Jung Kim

Kwang Moo Yi

Ki-Min Yun

Soo-Wan Kim

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

A method of detecting camera tempering and a system therefor are provided. The method includes: performing at least one of following operations: (i) detecting a size of a foreground in an image, and determining whether a first condition, that the size exceeds a first reference value, is satisfied, (ii) detecting change of a sum of the largest pixel value differences among pixel value differences between adjacent pixels in selected horizontal lines of the image, according to time, and determining whether a second condition, that the change lasts for a predetermined time period, is satisfied, and (iii) adding up a plurality of global motion vectors with respect to a plurality of images, and determining whether a third condition, that a sum of the global motion vectors exceeds a second reference value, is satisfied; and determining occurrence of camera tempering if at least one of the corresponding conditions is satisfied.

Method of detecting camera tampering and system thereof

A method and a system for analyzing multi-channel images are provided. The method includes: receiving a plurality of images through a plurality of channels, respectively; combining selected images among the plurality of images into a single image; and performing an image analysis with respect to: entirety of the combined image by treating the selected images as a single image; or each of the selected images in the combined image.

Method and system for analyzing multi-channel images

A photographing method of generating an image of a traced moving path and a photographing apparatus using the photographing method are provided. The photographing apparatus includes an image processing unit which captures a plurality of still images regarding an object, obtains state information about a state of the photographing apparatus at time points corresponding to the plurality of still images, respectively, and synthesizes the plurality of still images into an image based on the state information.

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Changwon, South Korea

Il-Kwon Chang