Patents by Inventor Cheng-Chieh Yang

Cheng-Chieh Yang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20250029264
    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.
    Type: Application
    Filed: October 3, 2024
    Publication date: January 23, 2025
    Inventors: David Nister, Soohwan Kim, Yue Wu, Minwoo Park, Cheng-Chieh Yang
  • Publication number: 20250022175
    Abstract: In various examples, sensor calibration for autonomous or semi-autonomous systems and applications is described herein. Systems and methods are disclosed that calibrate image sensors, such as cameras, using images captured by the image sensors at different time instances. For instance, a first image sensor may generate first image data representing at least two images and a second image sensor may generate second image data representing at least one image. One or more feature points may then be tracked between the images represented by the first image data and the image represented by the second image data. Additionally, the feature point(s), timestamps associated with the images, poses associated with image sensors (e.g., poses of a vehicle), and/or other information may be used to determine one or more values of one or more parameters that calibrate the first image sensor with the second image sensor.
    Type: Application
    Filed: July 10, 2023
    Publication date: January 16, 2025
    Inventors: Yue Wu, Cheng-Chieh Yang, Kang Wang, Ayon Sen, Hsin Miao
  • Patent number: 12159417
    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.
    Type: Grant
    Filed: February 23, 2022
    Date of Patent: December 3, 2024
    Assignee: NVIDIA Corporation
    Inventors: David Nister, Soohwan Kim, Yue Wu, Minwoo Park, Cheng-Chieh Yang
  • Patent number: 12107343
    Abstract: An antenna structure includes a feeding radiation element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a switch circuit. The feeding radiation element has a feeding point. The second radiation element is coupled through the first radiation element to the feeding radiation element. The third radiation element is coupled to the second radiation element. The fourth radiation element is coupled to the second radiation element. The fourth radiation element and the third radiation element extend in different directions. The fifth radiation element has a tuning point, and is coupled to the feeding radiation element. The feeding radiation element is disposed between the first radiation element and the fifth radiation element. The switch circuit selectively couples the tuning point to a ground voltage.
    Type: Grant
    Filed: March 21, 2022
    Date of Patent: October 1, 2024
    Assignee: WISTRON CORP.
    Inventors: Cheng-Chieh Yang, Chih-Ming Chen, Po-Yu Chen
  • Publication number: 20240312187
    Abstract: In various examples, feature tracking for autonomous or semi-autonomous systems and applications is described herein. Systems and methods are disclosed that merge, using one or more processes, features detected using a feature tracker(s) and features detected using a feature detector(s) in order to track features between images. In some examples, the number of merged features and/or the locations of the merged features within the images are limited. This way, the systems and methods are able to identify merged features that are of greater importance for tracking while refraining from tracking merged features that are of less importance. For example, if the systems and methods are being used to identify features for autonomous driving, a greater number of merged features that are associated with objects located proximate to the driving surface may be tracked as compared to merged features that are associated with the sky.
    Type: Application
    Filed: March 15, 2023
    Publication date: September 19, 2024
    Inventors: Yue Wu, Cheng-Chieh Yang, Xin Tong, Minwoo Park
  • Patent number: 12046837
    Abstract: A communication device includes an RF (Radio Frequency) module, an antenna structure, a first switch element, a second switch element, a plurality of first impedance elements, and a plurality of second impedance elements. The antenna structure is coupled to the RF module. The antenna structure includes a first radiation element and a second radiation element. The first switch element is coupled to the first radiation element. The first switch element is switchable between the first impedance elements. The second switch element is coupled to the second radiation element. The second switch element is switchable between the second impedance elements.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: July 23, 2024
    Assignee: WISTRON CORP.
    Inventors: Cheng-Chieh Yang, Yi Shien Chen
  • Publication number: 20240222866
    Abstract: An antenna module including a substrate, a main antenna and a parasitic antenna is provided. The substrate has a ground. The main antenna is disposed on the substrate. The main antenna includes a first irradiating portion, a feeding portion and a first grounding portion, and the first grounding portion is connected to the ground. The parasitic antenna is disposed on the substrate. The parasitic antenna includes a second irradiating portion and a second grounding portion, and the second grounding portion is connected to the ground. An extending direction of the first irradiating portion and an extending direction of at least a part of the second irradiating portion are perpendicular to each other.
    Type: Application
    Filed: March 8, 2023
    Publication date: July 4, 2024
    Applicant: Wistron Corporation
    Inventors: Cheng-Chieh Yang, Po Yu Chen, Sheng Hui Yang
  • Patent number: 12003043
    Abstract: A communication device includes an RF (Radio Frequency) module, an antenna structure, a first switch element, a second switch element, a plurality of first impedance elements, and a plurality of second impedance elements. The antenna structure is coupled to the RF module. The antenna structure includes a first radiation element and a second radiation element. The first switch element is coupled to the first radiation element. The first switch element is switchable between the first impedance elements. The second switch element is coupled to the second radiation element. The second switch element is switchable between the second impedance elements.
    Type: Grant
    Filed: January 24, 2022
    Date of Patent: June 4, 2024
    Assignee: WISTRON CORP.
    Inventors: Cheng-Chieh Yang, Yi Shien Chen
  • Publication number: 20240161341
    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.
    Type: Application
    Filed: February 8, 2023
    Publication date: May 16, 2024
    Inventors: Ayon Sen, Gang Pan, Cheng-Chieh Yang, Yue Wu
  • Publication number: 20240161342
    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.
    Type: Application
    Filed: February 8, 2023
    Publication date: May 16, 2024
    Inventors: Ayon Sen, Gang Pan, Cheng-Chieh Yang, Yue Wu
  • Publication number: 20240078695
    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.
    Type: Application
    Filed: November 8, 2023
    Publication date: March 7, 2024
    Inventors: Minwoo Park, Yue Wu, Michael Grabner, Cheng-Chieh Yang
  • Publication number: 20240059295
    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.
    Type: Application
    Filed: October 31, 2023
    Publication date: February 22, 2024
    Inventors: Minwoo Park, Yue Wu, Cheng-Chieh Yang
  • Publication number: 20240062657
    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.
    Type: Application
    Filed: October 20, 2023
    Publication date: February 22, 2024
    Inventors: Yue Wu, Pekka Janis, Xin Tong, Cheng-Chieh Yang, Minwoo Park, David Nister
  • Patent number: 11900629
    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.
    Type: Grant
    Filed: February 27, 2023
    Date of Patent: February 13, 2024
    Assignee: NVIDIA Corporation
    Inventors: Minwoo Park, Yue Wu, Michael Grabner, Cheng-Chieh Yang
  • Patent number: 11854401
    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.
    Type: Grant
    Filed: December 16, 2022
    Date of Patent: December 26, 2023
    Assignee: NVIDIA Corporation
    Inventors: Yue Wu, Pekka Janis, Xin Tong, Cheng-Chieh Yang, Minwoo Park, David Nister
  • Patent number: 11840238
    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.
    Type: Grant
    Filed: November 29, 2021
    Date of Patent: December 12, 2023
    Assignee: NVIDIA Corporation
    Inventors: Minwoo Park, Yue Wu, Cheng-Chieh Yang
  • Publication number: 20230351638
    Abstract: In various examples, system and methods for stereo disparity based hazard detection for autonomous machine applications are presented. Example embodiments may assist an ego-machine in detecting hazards within its path of travel. The systems and methods may use disparity between a stereo pair of images to generate a baseline path disparity model and further identify hazards from detected disparities that deviate from that path disparity model. A disparity map for the image pair is constructed in which each pixel represents a disparity for a corresponding element of the image captured. Blockwise division may be optionally used to subdivide the disparity map into a plurality of smaller disparity maps, each corresponding to a block of pixels of the disparity map. A V-space disparity map, where a first axis corresponds to disparity values and the second axis corresponds to pixel rows, may be used to simplify estimation of the path disparity model.
    Type: Application
    Filed: April 29, 2022
    Publication date: November 2, 2023
    Inventors: Yue WU, Liwen Lin, Cheng-Chieh Yang, Gang Pan
  • Publication number: 20230253706
    Abstract: An antenna structure includes a feeding radiation element, a first radiation element, a second radiation element, a third radiation element, a fourth radiation element, a fifth radiation element, and a switch circuit. The feeding radiation element has a feeding point. The second radiation element is coupled through the first radiation element to the feeding radiation element. The third radiation element is coupled to the second radiation element. The fourth radiation element is coupled to the second radiation element. The fourth radiation element and the third radiation element extend in different directions. The fifth radiation element has a tuning point, and is coupled to the feeding radiation element. The feeding radiation element is disposed between the first radiation element and the fifth radiation element. The switch circuit selectively couples the tuning point to a ground voltage.
    Type: Application
    Filed: March 21, 2022
    Publication date: August 10, 2023
    Inventors: Cheng-Chieh YANG, Chih-Ming CHEN, Po-Yu CHEN
  • Publication number: 20230230273
    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.
    Type: Application
    Filed: February 27, 2023
    Publication date: July 20, 2023
    Inventors: Minwoo Park, Yue Wu, Michael Grabner, Cheng-Chieh Yang
  • Publication number: 20230178893
    Abstract: A communication device includes an RF (Radio Frequency) module, an antenna structure, a first switch element, a second switch element, a plurality of first impedance elements, and a plurality of second impedance elements. The antenna structure is coupled to the RF module. The antenna structure includes a first radiation element and a second radiation element. The first switch element is coupled to the first radiation element. The first switch element is switchable between the first impedance elements. The second switch element is coupled to the second radiation element. The second switch element is switchable between the second impedance elements.
    Type: Application
    Filed: January 24, 2022
    Publication date: June 8, 2023
    Inventors: Cheng-Chieh YANG, Yi Shien CHEN