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公开(公告)号：US11418717B2
公开(公告)日：2022-08-16
申请号：US17118784
申请日：2020-12-11
Applicant: HANWHA TECHWIN CO., LTD.
Inventor： Jong In Park , Jung Suk Oh , Dae Bong Kim
Abstract: A method of creating a privacy mask from an image imaged by an imaging device in which a rotation axis of a camera and a center of a lens do not match includes measuring a distance from the camera to an object in a first imaging condition; creating a first mask for the object, and storing the distance together with the first mask; and creating a second mask for the object in a second imaging condition and correcting a position of the second mask using the first mask and the distance, wherein an imaging angle of the camera the first imaging condition is same as the imaging angle of the camera in the second imaging condition, and wherein a position of the lens in the first imaging condition is reversed around the rotation axis from a position of the lens in the second imaging condition.
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Patent Agency Ranking
公开(公告)号：US11689806B2
公开(公告)日：2023-06-27
申请号：US17199596
申请日：2021-03-12
Applicant: HANWHA TECHWIN CO., LTD.
Inventor： Chang Yeon Kim , Won Joon Kong , Jong In Park , Kyoung Jae Lee , Ho Seoung Hwang
IPC: H04N23/67 , G02B7/10 , H04N23/695 , H04N25/704
CPC classification number: H04N23/67 , G02B7/102 , H04N23/695 , H04N25/704
Abstract: A photo sensor assembly may include: a rotator configured to rotate together with a camera module; a plurality of first photo interrupter bars disposed at a same interval along a first circumference on the rotator; a second photo interrupter bar disposed at a second circumference on the rotator; a first photo sensor disposed closer to the first circumference than to the second circumference, and configured to detect a first light-blocking pattern generated from the plurality of first photo interrupter bars; a second photo sensor disposed closer to the second circumference than to the first circumference, and configured to detect a second light-blocking pattern generated from the second photo interrupter bar; and a processor configured to estimate an initial position of the rotator based on the second light-blocking pattern and estimate a rotational angle from the initial position of the rotator based on the detected first light-blocking pattern.
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公开(公告)号：US11650041B2
公开(公告)日：2023-05-16
申请号：US17201498
申请日：2021-03-15
Applicant: HANWHA TECHWIN CO., LTD.
Inventor： Chang Yeon Kim , Won Joon Kong , Jong In Park , Kyoung Jae Lee
CPC classification number: G01B7/30 , G01D5/145 , G03B17/561
Abstract: A magnetic sensor assembly for detecting angular positions of a camera module, includes: a housing; a rotation member configured to rotate together with the camera module; a magnet member that is configured to rotate with the rotation member on at least a portion of the housing, the magnet member includes a first multi-pole magnetized magnet that has a first number of pole pairs alternately disposed along a first circumference on the rotation member, and further includes a second multi-pole magnetized magnet that has a second number of pole pairs alternately disposed along a second circumference on the rotation member; a hall sensor configured to detect a change of magnetic field generated from the first multi-pole magnetized magnet and the second multi-pole magnetized magnet; and a processor configured to estimate an initial position of the rotation member and a rotational angle from the initial position using the detected magnetic field.
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公开(公告)号：US11228719B2
公开(公告)日：2022-01-18
申请号：US15992947
申请日：2018-05-30
Applicant: Hanwha Techwin Co., Ltd.
Inventor： Won Mo Koo , Hee Joong Han , Won Sin Lee , Jong In Park
Abstract: A method of controlling zoom of a lighting unit based on brightness of an image may include determining at least one of an angle of view of an optical unit and an optical zoom magnification of the optical unit configured to obtain an image by using an image sensor, determining a zoom adjustment range of a lighting unit based on at least one of the angle of view and the optical zoom magnification, and adjusting zoom of the lighting unit such that brightness of the image meets a preset condition within the zoom adjustment range, wherein a diffusion range of light from the lighting unit is adjusted through the zoom adjustment of the lighting unit.
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公开(公告)号：US10567653B2
公开(公告)日：2020-02-18
申请号：US15933270
申请日：2018-03-22
Applicant: HANWHA TECHWIN CO., LTD.
Inventor： Dae Bong Kim , Cheol Ho Kim , Young Mi Kim , Sang Hyun Cho , Jong In Park
Abstract: A method of rotating a surveillance camera having an acceleration sensor and being controllable by a processor to maintain a tilt-angle to conform to a command tilt-angle, includes the steps of moving the surveillance camera tilt to a predetermined command tilt-angle in response to a signal from the processor; periodically calculating estimated tilt-angles by using acceleration values in at least one axis of an acceleration sensor; calculating a difference value between an estimated tilt-angle of a current period and an estimated tilt-angle of a previous period; and when the difference value between the estimated tilt-angles exceeds a set limit, moving the camera to another position to correct the tilt angle according to the difference calculate.
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6.发明申请公开(公告)号：US20190182425A1
公开(公告)日：2019-06-13
申请号：US15933270
申请日：2018-03-22
Applicant: HANWHA TECHWIN CO., LTD.
Inventor： Dae Bong KIM , Cheol Ho Kim , Young Mi Kim , Sang Hyun Cho , Jong In Park
IPC: H04N5/232
CPC classification number: H04N5/23258 , G08B13/1963 , G08B29/24 , H04N5/23267 , H04N5/23287
Abstract: A method of rotating a surveillance camera having an acceleration sensor and being controllable by a processor to maintain a tilt-angle to conform to a command tilt-angle, includes the steps of moving the surveillance camera tilt to a predetermined command tilt-angle in response to a signal from the processor; periodically calculating estimated tilt-angles by using acceleration values in at least one axis of an acceleration sensor; calculating a difference value between an estimated tilt-angle of a current period and an estimated tilt-angle of a previous period; and when the difference value between the estimated tilt-angles exceeds a set limit, moving the camera to another position to correct the tilt angle according to the difference calculate.
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