INTRINSIC PARAMETER TESTING
    2.
    发明公开

    公开(公告)号:EP4456532A1

    公开(公告)日:2024-10-30

    申请号:EP24164319.6

    申请日:2024-03-18

    申请人: ASMPT AEi, Inc.

    发明人: THOMAS, John

    IPC分类号: H04N17/00 G06T7/80

    摘要: Intrinsic parameter testing apparatus and methodology, which may variously shorten process time by using a plurality of collimators capable of azimuthal rotation, and address chromatic aberration by providing independently actuable illumination means associated with the or each collimator, for selectively supplying light of various wavelength ranges.

    DETERMINING CAMERA ORDERING FOR EXTRINSIC CALIBRATION OF MULTI-CAMERA SYSTEM

    公开(公告)号:EP4439465A1

    公开(公告)日:2024-10-02

    申请号:EP24157240.3

    申请日:2024-02-13

    发明人: HUANG, Sangxia

    IPC分类号: G06T7/80

    摘要: A device determines an order for combining image data from a plurality of cameras (C1-Cn) in extrinsic calibration of the cameras. The device obtains detection data, [DD], indicative of scene points seen by each camera and an estimated relative angle between camera pairs. The device generates a first ordering, [COR1], of camera pairs based on the estimated relative angle, and repeatedly selects a current camera pair, CCP, from [COR1] until a termination criterion is fulfilled. For each current camera pair, the device initiates an evaluation procedure to generate a secondary ordering, [COR2], of a set of remaining cameras, [REM], based on [DD]. The termination criterion is fulfilled when [COR2] includes a predefined number of cameras. The evaluation procedure sequentially adds a respective remaining camera to [COR2] as a function of the scene points that are seen by the respective remaining camera and at least two cameras among the current camera pair and [COR2]. When the termination criterion is fulfilled, the device generates a final ordering, [FCOR], of cameras by appending [COR2] to CCP for which the first termination criterion is fulfilled.

    A METHOD AND DEVICE FOR CALIBRATING A CAMERA MOUNTED ON A VEHICLE

    公开(公告)号:EP4394705A1

    公开(公告)日:2024-07-03

    申请号:EP22216952.6

    申请日:2022-12-28

    申请人: Zenseact AB

    IPC分类号: G06T7/80

    摘要: The present invention is related to a computer-implemented method (100) for calibrating a set of extrinsic parameters of a camera mounted on a vehicle. The method (100) comprises: obtaining (S102) a sequence of images, captured by the camera, wherein each image of the sequence of images depicts a portion of a surrounding environment of the vehicle in a respective time instance of a plurality of time instances; determining (S104) a set of feature points in the sequence of images; determining (S106) an area representing a sky in the sequence of images; removing (S114), from the set of feature points, a subset of feature points, the subset of feature points belonging to the area representing the sky, thereby forming an updated set of feature points; determining (S118) a first motion trajectory of the vehicle over the plurality of time instances, based on the updated set of feature points; obtaining (S120) a second motion trajectory of the vehicle over the plurality of time instances, wherein the second motion trajectory is based on motion data obtained from one or more other sensors of the vehicle; and calibrating (S122) the camera by adjusting the set of extrinsic parameters of the camera based on a difference between the first motion trajectory and the second motion trajectory.