Abstract: Systems and methods for forming eruption compensation (EC) features in dental appliances for accommodating erupting teeth. An EC feature may be oversized compared to a predicted geometry of an erupting tooth, thereby allowing natural eruption of the tooth when a subject wears the dental appliance. The size, shape, location and/or orientation of the EC feature may be determined based on a virtual EC region in a virtual dental model of the subject's teeth. Dimensions of the virtual EC region may be calculated using a scaling process applied to the predicted geometry of the erupting tooth. In some cases an asymmetric scaling may be used to provide a prescribed larger lingual or buccal side of the EC region to accommodate an ectopically erupting tooth.

Abstract: A system and method for inferring a stop line for a vehicle at an intersection are provided. The system includes a processor configured to detect from accessed map data that a traffic control measure is positioned before an intersection and determine whether a stop line for the detected traffic control measure is painted. The processor, in response to determining that no stop line is painted, identifies a restricted lane and infers a stop line. The processor infers the stop line by identifying, as a nearest lane conflict, a lane segment of a second road intersecting the first road at the intersection and advancing a location of the entry line as an intermediate stop line a distance toward the nearest lane conflict, until the intermediate stop line is at a target distance from a nearest boundary of the nearest lane conflict to form an inferred stop line.

Abstract: Systems and methods for operating an autonomous vehicle (AV) are provided. The method includes detecting one or more objects in an environment, predicting a first set of predicted object trajectories comprising one or more trajectories for each of the detected one or more objects, generating a plurality of candidate AV trajectories for the AV, scoring each of the candidate AV trajectories according to a cost function, using the scoring to select a final AV trajectory for execution, determining which of the predicted object trajectories affected the final AV trajectory and which did not do so, adding the predicted object trajectories that affected the final AV trajectory to a persisted prediction cache, excluding from the persisted prediction cache any predicted object trajectories that did not affect the final AV trajectory, and executing the final AV trajectory to cause the AV to move along the final AV trajectory.

Abstract: Disclosed herein are system, method, and computer program product embodiments for handling unmapped speed limit signs. For example, the method includes receiving sensor data from a sensor of a vehicle, identifying a traffic sign within a field of view of the vehicle based on the sensor data, identifying one or more lane segments of a road associated with the identified traffic sign based on a determination that the identified traffic sign is not mapped in a priori map, and updating an attribute associated with a segment of the one or more lane segments of the road based on a determination that a detected attribute corresponding to the identified sign is more restrictive than an attribute associated with the lane segment in the a priori map.

Abstract: Apparatuses and methods for customized retainers to prevent relapse. In particular, described herein are customized retainers, and methods and apparatuses for making customized retainers that specifically reenforce and prevent movement of one or more teeth having a higher likelihood of relapse following completion of an orthodontic treatment plan.

Abstract: Methods and apparatuses (including software) for optimizing dental treatment plans, including for optimizing the treatment plans using dental aligners. These methods and apparatuses may optimize a treatment plan by estimating a difference between a target set of tooth position and a predicted set of tooth positions using the treatment plan using a prediction network trained to use multiple translational and rotational directions for individual teeth as well as reaction forces on the individual teeth based on adjacent teeth.

Abstract: Methods, systems, and computer program products for navigating a vehicle are disclosed. The methods include extracting lane segment data associated with lane segments of a vector map that are within a region of interest, and analyzing the lane segment data and a heading of the vehicle to determine whether motion of the vehicle satisfies a condition. The condition can be associated with (i) an association between the heading of the vehicle and a direction of travel of a lane that corresponds to the current location of the vehicle and/or (ii) a minimum stopping distance to an imminent traffic control measure in the lane that corresponds to the current location of the vehicle. When the motion does not satisfy the condition, the methods include causing the vehicle to perform a motion correction.

Abstract: Systems and methods for operating an autonomous vehicle (AV) are provided. The method includes detecting one or more objects in an environment, predicting a first set of predicted object trajectories comprising one or more trajectories for each of the detected one or more objects, generating a plurality of candidate AV trajectories for the AV, scoring each of the candidate AV trajectories according to a cost function, using the scoring to select a final AV trajectory for execution, determining which of the predicted object trajectories affected the final AV trajectory and which did not do so, adding the predicted object trajectories that affected the final AV trajectory to a persisted prediction cache, excluding from the persisted prediction cache any predicted object trajectories that did not affect the final AV trajectory, and executing the final AV trajectory to cause the AV to move along the final AV trajectory.

Abstract: Methods, systems, and computer program products for navigating a vehicle are disclosed. The methods include extracting lane segment data associated with lane segments of a vector map that are within a region of interest, and analyzing the lane segment data and a heading of the vehicle to determine whether motion of the vehicle satisfies a condition. The condition can be associated with (i) an association between the heading of the vehicle and a direction of travel of a lane that corresponds to the current location of the vehicle and/or (ii) a minimum stopping distance to an imminent traffic control measure in the lane that corresponds to the current location of the vehicle. When the motion does not satisfy the condition, the methods include causing the vehicle to perform a motion correction.

Abstract: Vehicle driver assistance and warning systems that alert a driver of a vehicle to wrong-way driving and/or imminent traffic control measures (TCMs) are disclosed. The system will identify a region of interest around the vehicle, access a vector map that includes the region of interest, and extract lane segment data associated with lane segments that are within the region of interest. The system will analyze the lane segment data and the vehicle's direction of travel to determine whether motion of the vehicle indicates that either: (a) the vehicle is traveling in a wrong-way direction for its lane; or (b) the vehicle is within a minimum stopping distance to an imminent TCM in its lane. When the system detects either condition, it will cause a driver warning system of the vehicle to output a driver alert.

Abstract: A system and method for inferring a stop line for a vehicle at an intersection are provided. The system includes a processor configured to detect from accessed map data that a traffic control measure is positioned before an intersection and determine whether a stop line for the detected traffic control measure is painted. The processor, in response to determining that no stop line is painted, identifies a restricted lane and infers a stop line. The processor infers the stop line by identifying, as a nearest lane conflict, a lane segment of a second road intersecting the first road at the intersection and advancing a location of the entry line as an intermediate stop line a distance toward the nearest lane conflict, until the intermediate stop line is at a target distance from a nearest boundary of the nearest lane conflict to form an inferred stop line.

Abstract: Vehicle driver assistance and warning systems that alert a driver of a vehicle to wrong-way driving and/or imminent traffic control measures (TCMs) are disclosed. The system will identify a region of interest around the vehicle, access a vector map that includes the region of interest, and extract lane segment data associated with lane segments that are within the region of interest. The system will analyze the lane segment data and the vehicle's direction of travel to determine whether motion of the vehicle indicates that either: (a) the vehicle is traveling in a wrong-way direction for its lane; or (b) the vehicle is within a minimum stopping distance to an imminent TCM in its lane. When the system detects either condition, it will cause a driver warning system of the vehicle to output a driver alert.

Abstract: A two-loop cross-belt sorter includes at least one loop-shaped track (1); two cross-belt trolley groups (2), and forms two side-by-side conveyance loops able to circulate on the loop-shaped track (1), and a power apparatus (3) that drives the two cross-belt trolley groups (2) to move along the loop-shaped track (1). The two-loop cross-belt sorter uses two sets of trolleys on a loop-shaped track, allows the space inside the loop to be utilized and the quantity of cross-belt trolleys to be increased without increasing the area occupied by the sorter, thus doubling sorting capacity, while allowing parcels to be transferred between cross-belt trolleys on the two conveyance loops, thereby reducing the idle rate of the trolleys.

Abstract: A replay method of live videos, includes: receiving a replay request sent by a platform control server, the replay request being directed to a specified video file in a storage server, wherein the specified video file is obtained after a live streaming server records a live video, and the specified video file is uploaded to the storage server by the live streaming server; retrieving, from the storage server, the specified video file to which the replay request is directed; and converting the specified video file to a live video stream, and transmitting the live video stream to the live streaming server to allow the live streaming server to transmit the live video stream to a user client.

Abstract: A method for diverting a live video stream includes: a target stream-pushing edge node receives and maintains a target live video stream pushed by an anchor terminal, and reports video stream information of the target live video stream to the CCL server through a locally deployed CCL proxy; when a stream-pulling request of the target live video stream sent by a target static parent node is received, a dynamic parent node M determines whether the target live video stream is maintained locally; if the target live video stream is not maintained locally, the dynamic parent node M determines the target stream-pushing edge node from the CCL server through a locally deployed CCL proxy; and the dynamic parent node M pulls the target live video stream from the target stream-pushing edge node and feeds back the target live video stream to the target static parent node.

Abstract: A two-loop cross-belt sorter includes at least one loop-shaped track (1); two cross-belt trolley groups (2), and forms two side-by-side conveyance loops able to circulate on the loop-shaped track (1), and a power apparatus (3) that drives the two cross-belt trolley groups (2) to move along the loop-shaped track (1). The two-loop cross-belt sorter uses two sets of trolleys on a loop-shaped track, allows the space inside the loop to be utilized and the quantity of cross-belt trolleys to be increased without increasing the area occupied by the sorter, thus doubling sorting capacity, while allowing parcels to be transferred between cross-belt trolleys on the two conveyance loops, thereby reducing the idle rate of the trolleys.

Abstract: A method for diverting a live video stream includes: a target stream-pushing edge node receives and maintains a target live video stream pushed by an anchor terminal, and reports video stream information of the target live video stream to the CCL server through a locally deployed CCL proxy; when a stream-pulling request of the target live video stream sent by a target static parent node is received, a dynamic parent node M determines whether the target live video stream is maintained locally; if the target live video stream is not maintained locally, the dynamic parent node M determines the target stream-pushing edge node from the CCL server through a locally deployed CCL proxy; and the dynamic parent node M pulls the target live video stream from the target stream-pushing edge node and feeds back the target live video stream to the target static parent node.

Abstract: A replay method of live videos, includes: receiving a replay request sent by a platform control server, the replay request being directed to a specified video file in a storage server, wherein the specified video file is obtained after a live streaming server records a live video, and the specified video file is uploaded to the storage server by the live streaming server; retrieving, from the storage server, the specified video file to which the replay request is directed; and converting the specified video file to a live video stream, and transmitting the live video stream to the live streaming server to allow the live streaming server to transmit the live video stream to a user client.

Abstract: A sliding device for a material shaft includes a shaft body, sliding units, spacers. An outer periphery of the shaft body has axial accommodating grooves. The sliding units and the spacers are spaced and arranged in the accommodating grooves. A top surface of each roller extends out of the outer periphery of the shaft body. When a material roll is sleeved on the shaft body, the inner wall of the material roll is in contact with the outer periphery of the rollers. When the material roll is to be mounted on or dismounted from the shaft body, the material roll is pushed in a direction so that the inner wall of the material roll rubs against the rollers, thereby rotating the rollers. The friction between the material roll and the shaft body is reduced for the material roll to be mounted on or dismounted from the shaft body effortlessly.

Abstract: A tray structure includes a plurality of trays stacking together from top to bottom and expanding in an alternating manner to construct a spiral plant tower. Each of the trays includes a bottom plate, a peripheral wall and a cultivating space. Each of the trays includes an inner tube provided with a protruding locking member, and an outer tube provided with a plurality of recessed locking members. The recessed locking members of the outer tube of an upper one of the trays are locked onto the protruding locking member of the inner tube of a lower one of the trays. Each of the trays includes a connecting tube located in and connected with the inner tube by a plurality of separating ribs. The connecting tubes of the trays are juxtaposed to each other when the trays are combined together.