Hanwha Vision Co., Ltd.

Joo Hye Noh

Won Mo Koo

Joo Hyun Yoon

Sung Wook Choi

Jung Won Pac

A focusing method of a camera for obtaining an image of a surveillance area by performing a pan-tilt-zoom (PTZ) operation is included. The focusing method includes: determining whether a region of interest set in the surveillance area is included in a first image obtained by the camera; converting a mode according to a result of the determination by selecting a first mode in which focusing is performed using a first focusing algorithm or a second mode in which focusing is performed using a second focusing algorithm that is different from the first focusing algorithm; and focusing the camera with respect to the first image according to the first mode or the second mode.

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Seongnam-si, South Korea

Joo Hye Noh