Camera orientation estimation
    2.
    发明授权

    公开(公告)号:US12131499B2

    公开(公告)日:2024-10-29

    申请号:US18339940

    申请日:2023-06-22

    Applicant: TUSIMPLE, INC.

    CPC classification number: G06T7/74 G06T7/337 G06T2207/30184 G06T2207/30252

    Abstract: Techniques are described to estimate orientation of one or more cameras located on a vehicle. The orientation estimation technique can include obtaining an image from a camera located on a vehicle while the vehicle is being driven on a road, determining, from a terrain map, a location of a landmark located at a distance from a location of the vehicle on the road, determining, in the image, pixel locations of the landmark, selecting one pixel location from the determined pixel locations; and calculating values that describe an orientation of the camera using at least an intrinsic matrix and a previously known extrinsic matrix of the camera, where the intrinsic matrix is characterized based on at least the one pixel location and the location of the landmark.

    Verification module system and method for motion-based lane detection with multiple sensors

    公开(公告)号:US11573095B2

    公开(公告)日:2023-02-07

    申请号:US17074468

    申请日:2020-10-19

    Applicant: TUSIMPLE, INC.

    Abstract: A method of lane detection for a non-transitory computer readable storage medium storing one or more programs is disclosed. The one or more programs include instructions, which when executed by a computing device, cause the computing device to perform the following steps comprising: generating a ground truth associated with lane markings expressed in god's view; receiving features from at least one of a hit-map image and a fitted lane marking, wherein the hit-map image includes a classification of pixels that hit a lane marking, and the fitted lane marking includes pixels optimized based on the hit-map image; and training a confidence module based on the features and the ground truth, the confidence module configured to determine on-line whether a fitted lane marking is reasonable, using parameters that express a lane marking in an arc.

    System and method for path planning of autonomous vehicles based on gradient

    公开(公告)号:US10710592B2

    公开(公告)日:2020-07-14

    申请号:US15481877

    申请日:2017-04-07

    Applicant: TuSimple, Inc.

    Inventor: Wutu Lin Xiaodi Hou

    Abstract: A system and method for path planning of autonomous vehicles based on gradient are disclosed. A particular embodiment includes: generating and scoring a first suggested trajectory for an autonomous vehicle; generating a trajectory gradient based on the first suggested trajectory; generating and scoring a second suggested trajectory for the autonomous vehicle, the second suggested trajectory being based on the first suggested trajectory and a human driving model; and outputting the second suggested trajectory if the score corresponding to the second suggested trajectory is within a score differential threshold relative to the score corresponding to the first suggested trajectory.

    System and method for vehicle position and velocity estimation based on camera and lidar data

    公开(公告)号:US10552691B2

    公开(公告)日:2020-02-04

    申请号:US15496113

    申请日:2017-04-25

    Applicant: TuSimple

    Abstract: A vehicle position and velocity estimation based on camera and LIDAR data are disclosed. A particular embodiment includes: receiving input object data from a subsystem of an autonomous vehicle, the input object data including image data from an image generating device and distance data from a distance measuring device; determining a two-dimensional (2D) position of a proximate object near the autonomous vehicle using the image data received from the image generating device; tracking a three-dimensional (3D) position of the proximate object using the distance data received from the distance measuring device over a plurality of cycles and generating tracking data; determining a 3D position of the proximate object using the 2D position, the distance data received from the distance measuring device, and the tracking data; determining a velocity of the proximate object using the 3D position and the tracking data; and outputting the 3D position and velocity of the proximate object relative to the autonomous vehicle.

    Deep module and fitting module system and method for motion-based lane detection with multiple sensors

    公开(公告)号:US10373003B2

    公开(公告)日:2019-08-06

    申请号:US15683463

    申请日:2017-08-22

    Applicant: TUSIMPLE

    Abstract: A method of lane detection for a non-transitory computer readable storage medium storing one or more programs is disclosed. The one or more programs include instructions, which when executed by a computing device, cause the computing device to perform the following steps comprising: generating a ground truth; off-line training a lane detection algorithm by using the ground truth, the lane detection algorithm using parameters that express a lane marking in an arc; on-line generating a predicted lane marking; comparing the predicted lane marking against the ground truth; and off-line refining the lane detection algorithm.

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