公开(公告)号：US11840238B2

公开(公告)日：2023-12-12

申请号：US17456835

申请日：2021-11-29

Applicant: NVIDIA Corporation

Inventor： Minwoo Park ,  Yue Wu ,  Cheng-Chieh Yang

IPC: B60W40/02 ,  H04N13/271 ,  G06V20/58 ,  B60W60/00 ,  G06T7/30 ,  G06T7/80 ,  H04N13/296 ,  G06T15/10 ,  G06T7/593

CPC classification number: B60W40/02 ,  B60W60/001 ,  G06T7/30 ,  G06T7/593 ,  G06T7/85 ,  G06T15/10 ,  G06V20/58 ,  H04N13/271 ,  H04N13/296 ,  B60W2420/42 ,  G06T2207/10012 ,  G06T2207/20081 ,  G06T2207/20084 ,  G06T2207/20132 ,  G06T2207/20228 ,  G06T2207/30244 ,  G06T2207/30261

Abstract: In various examples, systems and methods are disclosed that detect hazards on a roadway by identifying discontinuities between pixels on a depth map. For example, two synchronized stereo cameras mounted on an ego-machine may generate images that may be used extract depth or disparity information. Because a hazard's height may cause an occlusion of the driving surface behind the hazard from a perspective of a camera(s), a discontinuity in disparity values may indicate the presence of a hazard. For example, the system may analyze pairs of pixels on the depth map and, when the system determines that a disparity between a pair of pixels satisfies a disparity threshold, the system may identify the pixel nearest the ego-machine as a hazard pixel.

公开(公告)号：US20230230273A1

公开(公告)日：2023-07-20

申请号：US18174770

申请日：2023-02-27

Applicant: NVIDIA Corporation

Inventor： Minwoo Park ,  Yue Wu ,  Michael Grabner ,  Cheng-Chieh Yang

IPC: G06T7/60 ,  G06T7/579 ,  G06V20/56

CPC classification number: G06T7/60 ,  G06T7/579 ,  G06V20/588 ,  G06T2207/10028 ,  G06T2207/30256 ,  G06T2200/08

Abstract: In various examples, surface profile estimation and bump detection may be performed based on a three-dimensional (3D) point cloud. The 3D point cloud may be filtered in view of a portion of an environment including drivable free-space, and within a threshold height to factor out other objects or obstacles other than a driving surface and protuberances thereon. The 3D point cloud may be analyzed—e.g., using a sliding window of bounding shapes along a longitudinal or other heading direction—to determine one-dimensional (1D) signal profiles corresponding to heights along the driving surface. The profile itself may be used by a vehicle—e.g., an autonomous or semi-autonomous vehicle—to help in navigating the environment, and/or the profile may be used to detect bumps, humps, and/or other protuberances along the driving surface, in addition to a location, orientation, and geometry thereof.

公开(公告)号：US20230135088A1

公开(公告)日：2023-05-04

申请号：US17452747

申请日：2021-10-28

Applicant: NVIDIA Corporation

Inventor： Kang Wang ,  Yue Wu ,  Minwoo Park ,  Gang Pan

IPC: B60W60/00 ,  B60W40/09 ,  G06N3/02

Abstract: In various examples, a 3D surface structure such as the 3D surface structure of a road (3D road surface) may be observed and estimated to generate a 3D point cloud or other representation of the 3D surface structure. Since the estimated representation may be sparse, a deep neural network (DNN) may be used to predict values for a dense representation of the 3D surface structure from the sparse representation. For example, a sparse 3D point cloud may be projected to form a sparse projection image (e.g., a sparse 2D height map), which may be fed into the DNN to predict a dense projection image (a dense 21) height map). The predicted dense representation of the 3D surface structure may be provided to an autonomous vehicle drive stack to enable safe and comfortable planning and control of the autonomous vehicle.

公开(公告)号：US20230122119A1

公开(公告)日：2023-04-20

申请号：US18067176

申请日：2022-12-16

Applicant: NVIDIA Corporation

Inventor： Yue Wu ,  Pekka Janis ,  Xin Tong ,  Cheng-Chieh Yang ,  Minwoo Park ,  David Nister

IPC: G05D1/02 ,  G06N3/04 ,  G06T7/20 ,  G05D1/00 ,  G06V20/10 ,  G06V20/58 ,  G06F18/214

Abstract: In various examples, a sequential deep neural network (DNN) may be trained using ground truth data generated by correlating (e.g., by cross-sensor fusion) sensor data with image data representative of a sequences of images. In deployment, the sequential DNN may leverage the sensor correlation to compute various predictions using image data alone. The predictions may include velocities, in world space, of objects in fields of view of an ego-vehicle, current and future locations of the objects in image space, and/or a time-to-collision (TTC) between the objects and the ego-vehicle. These predictions may be used as part of a perception system for understanding and reacting to a current physical environment of the ego-vehicle.

公开(公告)号：US20220301186A1

公开(公告)日：2022-09-22

申请号：US17678835

申请日：2022-02-23

Applicant: NVIDIA Corporation

Inventor： David Nister ,  Soohwan Kim ,  Yue Wu ,  Minwoo Park ,  Cheng-Chieh Yang

IPC: G06T7/215 ,  G06T7/60 ,  G06V10/422

Abstract: In various examples, an ego-machine may analyze sensor data to identify and track features in the sensor data using. Geometry of the tracked features may be used to analyze motion flow to determine whether the motion flow violates one or more geometrical constraints. As such, tracked features may be identified as dynamic features when the motion flow corresponding to the tracked features violates the one or more static constraints for static features. Tracked features that are determined to be dynamic features may be clustered together according to their location and feature track. Once features have been clustered together, the system may calculate a detection bounding shape for the clustered features. The bounding shape information may then be used by the ego-machine for path planning, control decisions, obstacle avoidance, and/or other operations.

公开(公告)号：US12288363B2

公开(公告)日：2025-04-29

申请号：US18166118

申请日：2023-02-08

Applicant: NVIDIA Corporation

Inventor： Ayon Sen ,  Gang Pan ,  Cheng-Chieh Yang ,  Yue Wu

IPC: G06T7/80 ,  G01S17/86 ,  G01S17/89 ,  G01S17/931 ,  H04N17/00

Abstract: In various examples, sensor configuration for autonomous or semi-autonomous systems and applications is described. Systems and methods are disclosed that may use image feature correspondences between camera images along with an assumption that image features are locally planar to determine parameters for calibrating an image sensor with a LiDAR sensor and/or another image sensor. In some examples, an optimization problem is constructed that attempts to minimize a geometric loss function, where the geometric loss function encodes the notion that corresponding image features are views of a same point on a locally planar surface (e.g., a surfel or mesh) that is constructed from LiDAR data generated using a LiDAR sensor. In some examples, performing such processes to determine the calibration parameters may remove structure estimation from the optimization problem.

公开(公告)号：US20250091607A1

公开(公告)日：2025-03-20

申请号：US18971085

申请日：2024-12-06

Applicant: NVIDIA CORPORATION

Inventor： Kang Wang ,  Yue Wu ,  Minwoo Park ,  Gang Pan

IPC: B60W60/00 ,  B60W40/09 ,  G06N3/02

Abstract: In various examples, a 3D surface structure such as the 3D surface structure of a road (3D road surface) may be observed and estimated to generate a 3D point cloud or other representation of the 3D surface structure. Since the estimated representation may be sparse, a deep neural network (DNN) may be used to predict values for a dense representation of the 3D surface structure from the sparse representation. For example, a sparse 3D point cloud may be projected to form a sparse projection image (e.g., a sparse 2D height map), which may be fed into the DNN to predict a dense projection image (e.g., a dense 2D height map). The predicted dense representation of the 3D surface structure may be provided to an autonomous vehicle drive stack to enable safe and comfortable planning and control of the autonomous vehicle.

公开(公告)号：US12145617B2

公开(公告)日：2024-11-19

申请号：US17452744

申请日：2021-10-28

Applicant: NVIDIA Corporation

Inventor： Kang Wang ,  Yue Wu ,  Minwoo Park ,  Gang Pan

IPC: B60W60/00 ,  B60W40/06 ,  B60W40/105 ,  G06V20/58

Abstract: In various examples, a 3D surface structure such as the 3D surface structure of a road (3D road surface) may be observed and estimated to generate a 3D point cloud or other representation of the 3D surface structure. Since the representation may be sparse, one or more densification techniques may be applied to densify the representation of the 3D surface structure. For example, the relationship between sparse and dense projection images (e.g., 2D height maps) may be modeled with a Markov random field, and Maximum a Posterior (MAP) inference may be performed using a corresponding joint probability distribution to estimate the most likely dense values given the sparse values. The resulting dense representation of the 3D surface structure may be provided to an autonomous vehicle drive stack to enable safe and comfortable planning and control of the autonomous vehicle.

公开(公告)号：US11922571B2

公开(公告)日：2024-03-05

申请号：US17452751

申请日：2021-10-28

Applicant: NVIDIA Corporation

Inventor： Kang Wang ,  Yue Wu ,  Minwoo Park ,  Gang Pan

IPC: G06T17/05 ,  B60W30/09 ,  B60W30/14 ,  B60W40/06 ,  B60W50/06 ,  B60W60/00 ,  G06F18/214 ,  G06V20/05 ,  G06V20/58

CPC classification number: G06T17/05 ,  B60W30/09 ,  B60W30/143 ,  B60W40/06 ,  B60W50/06 ,  B60W60/001 ,  G06F18/214 ,  G06V20/05 ,  B60W2420/42 ,  B60W2420/52 ,  B60W2552/15

Abstract: In various examples, to support training a deep neural network (DNN) to predict a dense representation of a 3D surface structure of interest, a training dataset is generated using a parametric mathematical modeling. A variety of synthetic 3D road surfaces may be generated by modeling a 3D road surface using varied parameters to simulate changes in road direction and lateral surface slope. In an example embodiment, a synthetic 3D road surface may be created by modeling a longitudinal 3D curve and expanding the longitudinal 3D curve to a 3D surface, and the resulting synthetic 3D surface may be sampled to form a synthetic ground truth projection image (e.g., a 2D height map). To generate corresponding input training data, a known pattern that represents which pixels may remain unobserved during 3D structure estimation may be generated and applied to a ground truth projection image to simulate a corresponding sparse projection image.

公开(公告)号：US12159417B2

公开(公告)日：2024-12-03

申请号：US17678835

申请日：2022-02-23

Applicant: NVIDIA Corporation

Inventor： David Nister ,  Soohwan Kim ,  Yue Wu ,  Minwoo Park ,  Cheng-Chieh Yang

IPC: G06T7/60 ,  G06T7/215 ,  G06V10/422

Abstract: In various examples, an ego-machine may analyze sensor data to identify and track features in the sensor data using. Geometry of the tracked features may be used to analyze motion flow to determine whether the motion flow violates one or more geometrical constraints. As such, tracked features may be identified as dynamic features when the motion flow corresponding to the tracked features violates the one or more static constraints for static features. Tracked features that are determined to be dynamic features may be clustered together according to their location and feature track. Once features have been clustered together, the system may calculate a detection bounding shape for the clustered features. The bounding shape information may then be used by the ego-machine for path planning, control decisions, obstacle avoidance, and/or other operations.