Patent ID: 11882364
Assignee: HANWHA VISION CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 9:
10. A focusing apparatus comprising:
a determiner configured to determine whether a region of interest set in a surveillance area is included in a first image obtained in the surveillance area by a camera performing a pan-tilt-zoom (PTZ) operation;
a mode selector configured to convert 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
a focusing unit configured to focus the camera with respect to the first image according to the first mode or the second mode,
wherein the mode selector configured to
convert the mode by selecting the first mode in response to the determination that the region of interest is not included in the first image, and
convert the mode by selecting the second mode in response to the determination that the region of interest is included in the first image,
wherein
the first focusing algorithm comprises an algorithm in which focusing is performed by automatically setting a focus area and moving a focus lens step-by-step such that the focus area is focused, and
the second focusing algorithm comprises an algorithm in which focusing is performed by setting the region of interest as the focus area and moving the focus lens to a preset position of the focus lens for the region of interest,
wherein the focus area is a reference region for focusing in the first image.