PERCEPTION-BASED SIGN DETECTION AND INTERPRETATION FOR AUTONOMOUS MACHINE SYSTEMS AND APPLICATIONS

    公开(公告)号:WO2022251697A1

    公开(公告)日:2022-12-01

    申请号:PCT/US2022/031435

    申请日:2022-05-27

    摘要: In various examples, lanes may be grouped and a sign may be assigned to a lane in a group, then propagated to another lane in the group to associate semantic meaning corresponding to the sign with the lanes. The sign may be assigned to the most similar lane as quantified by a matching score subject to the lane meeting any hard constraints. Propagation of an assignment of the sign to a different lane may be based on lane attributes and/or sign attributes. Lane attributes may be evaluated and assignments of signs may occur for a lane as a whole, and/or for particular segments of a lane (e.g., of multiple segments perceived by the system). A sign may be a compound sign that is identified as individual signs, which are associated with one another. Attributes of the compound sign may provide semantic meaning used to operate a machine.

    INTERSECTION REGION DETECTION AND CLASSIFICATION FOR AUTONOMOUS MACHINE APPLICATIONS

    公开(公告)号:WO2020264029A1

    公开(公告)日:2020-12-30

    申请号:PCT/US2020/039430

    申请日:2020-06-24

    摘要: In various examples, live perception from sensors of a vehicle may be leveraged to detect and classify intersection contention areas in an environment of a vehicle in real-time or near real-time. For example, a deep neural network (DNN) may be trained to compute outputs – such as signed distance functions – that may correspond to locations of boundaries delineating intersection contention areas. The signed distance functions may be decoded and/or post-processed to determine instance segmentation masks representing locations and classifications of intersection areas or regions. The locations of the intersections areas or regions may be generated in image-space and converted to world-space coordinates to aid an autonomous or semi-autonomous vehicle in navigating intersections according to rules of the road, traffic priority considerations, and/or the like.

    OBJECT DETECTION USING SKEWED POLYGONS SUITABLE FOR PARKING SPACE DETECTION

    公开(公告)号:WO2020190880A1

    公开(公告)日:2020-09-24

    申请号:PCT/US2020/022997

    申请日:2020-03-16

    IPC分类号: G06K9/00 G06K9/46 G06K9/62

    摘要: A neural network may be used to determine corner points of a skewed polygon (e.g., as displacement values to anchor box corner points) that accurately delineate a region in an image that defines a parking space. Further, the neural network may output confidence values predicting likelihoods that corner points of an anchor box correspond to an entrance to the parking spot. The confidence values may be used to select a subset of the corner points of the anchor box and/or skewed polygon in order to define the entrance to the parking spot. A minimum aggregate distance between corner points of a skewed polygon predicted using the CNN(s) and ground truth corner points of a parking spot may be used simplify a determination as to whether an anchor box should be used as a positive sample for training.