Calibration system and calibration method for multi-camera system

    公开(公告)号:US12118749B2

    公开(公告)日:2024-10-15

    申请号:US18319503

    申请日:2023-05-18

    Inventor: Chi-Feng Lee

    Abstract: A calibration system for a multi-camera system is disclosed. The calibration system includes a connection device, a storage device, and a processor. The processor is configured to control each camera of the multi-camera system to capture a calibration image of a calibration board having a pattern including multiple conventional features and at least one non-conventional feature in which an FOV of the calibration image of at least one camera does not contain at least one conventional feature of the pattern, detect the conventional features and the non-conventional feature in the calibration image and record positions thereof in the storage device, transform a position of each conventional feature into absolute coordinates relative to reference coordinates by using a position of the non-conventional feature as the reference coordinates, and according to the absolute coordinates of the transformed conventional features, match the conventional features in the calibration images captured by the cameras to calibrate the cameras.

    Processing system for reducing data amount of a point cloud

    公开(公告)号:US20220375029A1

    公开(公告)日:2022-11-24

    申请号:US17738018

    申请日:2022-05-06

    Inventor: Chi-Feng Lee

    Abstract: A processing system for reducing data amount of a point cloud includes a sample rate controller and a transmitter. The sample rate controller is used for receiving a plurality of coordinates corresponding to the point cloud, and sampling the plurality of coordinates according to an adjustable sampling rate to generate a plurality of sampled coordinates, wherein data amount of the plurality of coordinates is not less than data amount of the plurality of sampled coordinates. The transmitter coupled to the sample rate controller is used for outputting the plurality of sampled coordinates.

    Image capture device
    4.
    发明授权

    公开(公告)号:US11122214B2

    公开(公告)日:2021-09-14

    申请号:US16045753

    申请日:2018-07-26

    Inventor: Chi-Feng Lee

    Abstract: An image capture device includes a light source, an image capture circuit, and a processor. The light source is used for generating emitting light. The image capture circuit is used for capturing an image corresponding to the emitting light. The processor is coupled to the light source and the image capture circuit for optionally adjusting the intensity of the emitting light of the light source according to luminance corresponding to the image and a target value.

    CALIBRATION METHOD OF AN IMAGE DEVICE AND RELATED IMAGE DEVICE AND OPERATIONAL DEVICE THEREOF

    公开(公告)号:US20190378301A1

    公开(公告)日:2019-12-12

    申请号:US16432935

    申请日:2019-06-06

    Inventor: Chi-Feng Lee

    Abstract: A calibration method of an image device includes at least two image capturing units included in the image device capturing at least two corresponding images; a processor executing distortion correction on the at least two corresponding images, extracting a plurality of feature points of a predetermined number of planes of an object from the at least two corresponding images, classifying the plurality of feature points according to each plane of the predetermined number of planes to accordingly calculate a point-to-point homography matrix corresponding to the each plane respectively to generate a rotation/translation matrix corresponding to the at least two image capturing units, generating a final rotation matrix corresponding to each image capturing unit of the at least two image capturing units according to the rotation/translation matrix, storing the final rotation matrix in a memory, and calibrating the each image capturing unit according to the final rotation matrix.

    SYSTEM OF CAMERA CALIBRATION
    7.
    发明申请

    公开(公告)号:US20190222825A1

    公开(公告)日:2019-07-18

    申请号:US16251100

    申请日:2019-01-18

    Inventor: Chi-Feng Lee

    CPC classification number: H04N13/246 G06T7/55 H04N5/2256 H04N5/23238

    Abstract: A system of camera calibration includes at least one first equipment and at least one second equipment, wherein a camera of at least one camera includes at least two image capturing groups, each image capturing group of the at least two image capturing groups includes at least two image capturers. Each first equipment provides at least one first calibration pattern, and the at least one first calibration pattern is utilized to calibrate first images including the at least one first calibration pattern captured by a plurality of corresponding image capturers of the at least two image capturing groups. Each second equipment provides at least one second calibration pattern, and the at least one second calibration pattern is utilized to calibrate second images including the at least one second calibration pattern captured by two corresponding adjacent image capturers of the at least two image capturing groups.

    DYNAMIC DISPLAY SYSTEM CAPABLE OF GENERATING IMAGES CORRESPONDING TO POSITIONS OF USERS

    公开(公告)号:US20180295353A1

    公开(公告)日:2018-10-11

    申请号:US15950154

    申请日:2018-04-10

    Inventor: Chi-Feng Lee

    Abstract: A dynamic display system includes a display panel, a detection device, and a processor. The detection device is disposed at a same side of a housing of the dynamic display system as the display panel, and detects first three-dimensional coordinate information of a position of a user corresponding to the detection device. The processor is coupled to the display panel and the detection device. The processor converts the first 3D coordinate information to second 3D coordinate information of the position of the user corresponding to the display panel, and generates an image to be presented by the display panel according to the second 3D coordinate information.

    DEPTH MAP GENERATION DEVICE FOR MERGING MULTIPLE DEPTH MAPS

    公开(公告)号:US20180293749A1

    公开(公告)日:2018-10-11

    申请号:US15937797

    申请日:2018-03-27

    Inventor: Chi-Feng Lee

    Abstract: A depth map generation device for merging multiple depth maps includes at least three image capturers, a depth map generator, and a mixer. The at least three image capturers form at least two image capture pairs. The depth map generator is coupled to the at least three image capturers for generating a depth map corresponding to each image capturer pair of the at least two image capture pairs according to an image pair captured by the each image capturer. The mixer is coupled to the depth map generator for merging at least two depth maps corresponding to the at least two image capturer pairs to generate a final depth map, wherein the at least two depth maps have different characteristics.

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