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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
发明人： Dae Bong Kim , Cheol Ho Kim , Young Mi Kim , Sang Hyun Cho , Jong In Park
摘要： 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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公开(公告)号：US20210099649A1
公开(公告)日：2021-04-01
申请号：US17118784
申请日：2020-12-11
发明人： Jong In PARK , Jung Suk Oh , Dae Bong Kim
摘要： 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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公开(公告)号：US11889185B2
公开(公告)日：2024-01-30
申请号：US17056815
申请日：2019-05-24
发明人： Dong Jin Park , Dae Bong Kim , Young Sang Kwon , Ki Bum Park , Joon Chan Park , Young Sub Kim
摘要： A monitoring system includes a camera module configured to photograph a subject, a laser distance sensor configured to sense a distance to the subject, the laser distance sensor being arranged in a line with the camera module, and a processor configured to acquire a first angle and a first sensing value of the laser distance sensor in response to an event, calculate a first distance between the camera module and the subject by using the first angle and the first sensing value, calculate a second angle by using the first distance, a laser angle of view of the laser distance sensor, and a laser angle of view length of the laser distance sensor, rotate the laser distance sensor up to the second angle when a difference between the first angle and the second angle exceeds a predetermined range, and acquire a second sensing value of the laser distance sensor.
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公开(公告)号：US10904445B2
公开(公告)日：2021-01-26
申请号：US16493055
申请日：2017-06-27
发明人： Dae Bong Kim , Young Sang Kwon , Ki Bum Park
IPC分类号： H04N5/232
摘要： A zoom tracking method performed by a control unit of a zoom camera includes operations (a) through (c). In operation (a), the control unit determines a focusing progress state at a time when a zooming start signal is received. In operation (b), the control unit narrows an estimated range of a subject distance or estimates the subject distance, according to the focusing progress state. In operation (c), the control unit performs focusing for a zoom magnification according to the narrowed estimated range or the estimated subject distance.
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公开(公告)号：US20220394182A1
公开(公告)日：2022-12-08
申请号：US17888950
申请日：2022-08-16
发明人： Jong In PARK , Jung Suk Oh , Dae Bong Kim
摘要： 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 in 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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公开(公告)号：US11418717B2
公开(公告)日：2022-08-16
申请号：US17118784
申请日：2020-12-11
发明人： Jong In Park , Jung Suk Oh , Dae Bong Kim
摘要： 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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公开(公告)号：US11307381B2
公开(公告)日：2022-04-19
申请号：US16496238
申请日：2017-06-28
发明人： Dae Bong Kim , Young Sang Kwon , Jae Goo Lee , Young Mi Kim , Hee Joong Han
IPC分类号： G02B7/10
摘要： Provided is an optical device including an optics including at least two moving groups that are movable along an optical axis and share portions of driving regions; a plurality of actuators configured to move the at least two moving groups along the optical axis, respectively; and a control unit configured to control the positions of the at least two moving groups by operating the actuators, wherein the control unit moves the at least two moving groups independently, such that the position coordinates of the at least two moving groups in one integrated coordinates system do not coincide with each other.
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公开(公告)号：US11076101B2
公开(公告)日：2021-07-27
申请号：US16956606
申请日：2018-01-08
发明人： Cheol Ho Kim , Dae Bong Kim , Young Sang Kwon
IPC分类号： H04N5/232
摘要： A method of correcting an optical axis of a zoom lens includes obtaining a degree of optical axis misalignment corresponding to a current zoom lens state of a camera, considering the current zoom lens state of the camera and data previously stored to define a relationship between a state of the zoom lens of the camera and the degree of optical axis misalignment, determining digital zoom information to compensate for the degree of optical axis misalignment, considering the degree of optical axis misalignment, and generating correction image data by cropping and magnifying image data photographed by the camera to correspond to the digital zoom information.
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