利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

23 条记录 (耗时 0.012 秒)

    METHOD OF PERFORMING AUTOFOCUS, AUTOFOCUS SYSTEM, AND CAMERA COMPRISING AN AUTOFOCUS MODULE
    2.
    发明授权
    METHOD OF PERFORMING AUTOFOCUS, AUTOFOCUS SYSTEM, AND CAMERA COMPRISING AN AUTOFOCUS MODULE 有权

    公开(公告)号：EP3296788B1

    公开(公告)日：2018-08-22

    申请号：EP16189024.9

    申请日：2016-09-15

    申请人： Axis AB

    发明人： Nyström, Johan ,  Xu, Can

    IPC分类号： G02B7/28 ,  G03B13/36 ,  G02B7/09

    CPC分类号： G02B7/282 ,  G02B7/09 ,  G02B7/285 ,  G03B13/36 ,  G03B2205/0046 ,  G06K9/00624 ,  H04N5/232121 ,  H04N5/23296

    摘要： A method of autofocusing a camera during a zooming operation is disclosed, comprising zooming the lens to a first zoom position (S1), measuring a first object distance from the camera to an object on which to focus (S2), determining a first focus start position using the first object distance (S3), performing a first autofocusing operation using the first focus start position as a starting point (S4), thereby determining a first determined focus position. A first lookup object distance is determined based on the first determined focus position (S5). A first correction factor is calculated as a ratio between the first lookup object distance and the first object distance (S6). The lens is zoomed to a second zoom position (S13), and a second focus position is determined (S17) using a second object distance (S16) calculated as a product of the first object distance and a second correction factor based on a ratio of depths of field at the second and first zoom positions (S15).

    IMAGE NOISE REDUCTION BASED ON A MODULATION TRANSFER FUNCTION OF A CAMERA DOME
    4.
    发明公开
    IMAGE NOISE REDUCTION BASED ON A MODULATION TRANSFER FUNCTION OF A CAMERA DOME 审中-公开

    公开(公告)号：EP3487160A1

    公开(公告)日：2019-05-22

    申请号：EP18163561.6

    申请日：2018-03-23

    申请人： Axis AB

    发明人： Ardö, Björn ,  Nyström, Johan

    IPC分类号： H04N5/217 ,  H04N5/232

    摘要： A method and apparatus are disclosed. The method may include determining a current zoom value of a camera and determining a first modulation transfer function of a transparent dome of the camera. The method may include applying a first low-pass filter to an image captured by the camera based on the current zoom value and the first modulation transfer function of the transparent dome.

    OPERATION CONTROL OF BATTERY-POWERED DEVICES
    5.
    发明公开
    OPERATION CONTROL OF BATTERY-POWERED DEVICES 审中-公开

    公开(公告)号：EP3503539A1

    公开(公告)日：2019-06-26

    申请号：EP17209672.9

    申请日：2017-12-21

    申请人： Axis AB

    发明人： Nyström, Johan ,  Fransson, Kent

    IPC分类号： H04N7/18 ,  G06F1/32

    摘要： A power control system (102) for controlling operation of a first battery-powered device (104) positioned at a remote location from a camera (106) is disclosed. The power control system (102) includes a receiving module (312), a retrieving module (314), a comparison module (316), and a transmission module (318). The receiving module (312) is configured to receive at least one of a pan angle and a tilt angle of the camera (106) indicative of a field of view. The retrieving module (314) is configured to retrieve a position of the first battery-powered device (104). The comparison module (316) is configured to compare the pan angle and the tilt angle with the position of the first battery-powered device (104), and determine whether the first battery-powered device (104) is positioned within the field of view of the camera (106) based on the comparison. The transmission module (318) is configured to transmit instructions to control power consumption of the first battery-powered device (104), based on the determination.

    METHOD OF PERFORMING AUTOFOCUS, AUTOFOCUS SYSTEM, AND CAMERA COMPRISING AN AUTOFOCUS MODULE
    6.
    发明公开
    METHOD OF PERFORMING AUTOFOCUS, AUTOFOCUS SYSTEM, AND CAMERA COMPRISING AN AUTOFOCUS MODULE 有权
    执行自动聚焦，自动聚焦系统和包括自动聚焦模块的相机的方法

    公开(公告)号：EP3296788A1

    公开(公告)日：2018-03-21

    申请号：EP16189024.9

    申请日：2016-09-15

    申请人： Axis AB

    发明人： Nyström, Johan ,  Xu, Can

    IPC分类号： G02B7/28 ,  G03B13/36

    CPC分类号： G02B7/282 ,  G02B7/09 ,  G02B7/285 ,  G03B13/36 ,  G03B2205/0046 ,  G06K9/00624 ,  H04N5/232121 ,  H04N5/23296

    摘要： A method of autofocusing a camera during a zooming operation is disclosed, comprising zooming the lens to a first zoom position (S1), measuring a first object distance from the camera to an object on which to focus (S2), determining a first focus start position using the first object distance (S3), performing a first autofocusing operation using the first focus start position as a starting point (S4), thereby determining a first determined focus position. A first lookup object distance is determined based on the first determined focus position (S5). A first correction factor is calculated as a ratio between the first lookup object distance and the first object distance (S6). The lens is zoomed to a second zoom position (S13), and a second focus position is determined (S17) using a second object distance (S16) calculated as a product of the first object distance and a second correction factor based on a ratio of depths of field at the second and first zoom positions (S15).

    摘要翻译： 公开了一种在变焦操作期间自动对焦相机的方法，包括将镜头变焦到第一变焦位置（S1），测量从相机到要聚焦的物体的第一物体距离（S2），确定第一焦点起始点 （S3），使用第一聚焦开始位置作为开始点（S4）执行第一自动聚焦操作，由此确定第一确定的聚焦位置。 基于第一确定的焦点位置来确定第一查找对象距离（S5）。 第一校正因子被计算为第一查找对象距离与第一对象距离之间的比率（S6）。 将镜头放大到第二变焦位置（S13），并且使用第二物距（S16）确定第二焦点位置（S17），第二物距（S16）作为第一物距和第二校正倍数的乘积计算，所述第二物距（S16）基于 在第二和第一变焦位置处的景深（S15）。

    Monitoring method and camera
    8.
    发明公开
    Monitoring method and camera 有权
    Überwachungsverfahrenund Kamera

    公开(公告)号：EP2747414A1

    公开(公告)日：2014-06-25

    申请号：EP12197677.3

    申请日：2012-12-18

    申请人： Axis AB

    发明人： Nyström, Johan

    IPC分类号： H04N5/232 ,  H04N5/235

    CPC分类号： H04N5/235 ,  H04N5/23212 ,  H04N7/183 ,  H04N7/188

    摘要： A monitoring camera arranged to monitor a scene and a method of controlling camera settings for a monitoring camera arranged to monitor a scene wherein images are captured of different parts of the scene by altering a field of view of the camera, wherein data defining a camera settings control area within the scene is accessed, and it is determined if there is an overlapping region between a current field of view of the camera and the camera settings control area, and if there is an overlapping region, camera settings are controlled based on the overlapping region.

    摘要翻译： 一种用于监视场景的监视摄像机和一种控制监视摄像机的摄像机设置的方法，该监视摄像机布置成通过改变摄像机的视场来监控场景的不同部分捕获图像的场景，其中定义摄像机设置的数据 访问场景内的控制区域，并且确定在照相机的当前视野和摄像机设置控制区域之间是否存在重叠区域，并且如果存在重叠区域，则基于重叠来控制照相机设置 地区。

    BUFFERING A GRAPHICAL OVERLAY TO BE APPLIED TO AN IMAGE
    9.
    发明公开
    BUFFERING A GRAPHICAL OVERLAY TO BE APPLIED TO AN IMAGE 审中-公开

    公开(公告)号：EP4451218A1

    公开(公告)日：2024-10-23

    申请号：EP23168392.1

    申请日：2023-04-18

    申请人： Axis AB

    发明人： Förberg, Johan ,  Nyström, Johan ,  Hassbring, Ludvig

    IPC分类号： G06T9/00 ,  H04N19/23 ,  H04N19/11 ,  H04N19/167 ,  H04N19/182

    摘要： A device and a method for buffering a graphical overlay to be applied to an image is disclosed. A graphical overlay description specifying content, size, and position in the image of a graphical element of the graphical overlay is obtained, and the graphical overlay is divided into a plurality of sequential line fragments. For each line fragment it is determined, using the graphical overlay description, whether the line fragment overlaps a part of the graphical element. On condition that the line fragment overlaps a part of the graphical element, information representing the part of the graphical element is buffered in a buffer memory for the line fragment. On condition that the line fragment does not overlap any part of the graphical element, a run-length coding representing identical pixels is buffered in the buffer memory for the line fragment.