Patents by Inventor Rajan Bhattacharyya

Rajan Bhattacharyya 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: 20240132081
    Abstract: A system for dynamically adjusting interactions between an ADAS equipped vehicle and occupants of the vehicle includes one or more physiological sensors disposed on the vehicle and one or more control modules having a processor, a memory, and input/output (I/O) ports in communication with the one or more physiological sensors. The control modules execute program code portions stored in the memory that: collect sensor data from the one or more physiological sensors; analyze the sensor data and select a subset of the sensor data corresponding to a subset of the one or more physiological sensors; predicts, based on the subset of the sensor data, that an occupant of the vehicle is experiencing an increase in stress level; and adapt an ADAS action of the vehicle to reduce an occupant stress level from a first level to a second level lower than the first level.
    Type: Application
    Filed: October 19, 2022
    Publication date: April 25, 2024
    Inventors: Mia Levy, Evelyn Kim, Rajan Bhattacharyya
  • Patent number: 11941870
    Abstract: Described is a system for action recognition error detection and correction using probabilistic signal temporal logic. The system is initiated by training an action recognition system to generate true positive (TP)/false positive (FP) axioms. Thereafter, the system ca be used to classify one or more actions in a video sequence as true action classifications by using the TP/FP axioms to remove false action classifications. With the remaining true classifications, a device can be controlled given the situation and relevant true classification.
    Type: Grant
    Filed: March 18, 2022
    Date of Patent: March 26, 2024
    Assignee: HRL LABORATORIES, LLC
    Inventors: Hyukseong Kwon, Amit Agarwal, Kevin Lee, Amir M. Rahimi, Alexie Pogue, Rajan Bhattacharyya
  • Patent number: 11873006
    Abstract: A virtual lane estimation system includes a memory device, a sensor and a computer. The memory device is configured to store a road map that corresponds to a portion of a road ahead of a vehicle. The sensor is configured to observe a plurality of trajectories of a plurality of neighboring vehicles that traverse the portion of the road. The computer is configured to initialize a recursive self-organizing map as a plurality of points arranged as a two-dimensional grid aligned with the road map, train the points in the recursive self-organizing map in response to the trajectories, generate a directed graph that contains one or more virtual lanes through the road map in response to the points trained to the trajectories, and generate a control signal that controls navigation of the vehicle through the portion of the road in response to the virtual lanes in the directed graph.
    Type: Grant
    Filed: September 21, 2020
    Date of Patent: January 16, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Tiffany J. Hwu, Rajan Bhattacharyya, Michael J. Daily, Kyungnam Kim
  • Patent number: 11858507
    Abstract: A method of using perception-inspired event generation for situation awareness for a vehicle, including receiving perception input data from a sensor of the vehicle and processing the perception input data to classify and generate parameters related to an external entity in a vicinity of the vehicle. The method includes generating a hierarchical event structure that classifies and prioritizes the perception input data by classifying the external entity into an attention zone and prioritizing the external entity within the attention zone according to a risk level value for the external entity. A higher risk level value indicates a higher priority within the attention zone. The method further includes developing a behavior plan for the vehicle based on the hierarchical event structure.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: January 2, 2024
    Assignee: GM Global Technology Operations LLC
    Inventors: Hyukseong Kwon, Rajan Bhattacharyya, Michael J. Daily
  • Patent number: 11854252
    Abstract: Described is a system for evaluating and correcting perception errors in object detection and recognition. The system receives perception data from an environment proximate a mobile platform. Perception probes are generated from the perception data which describe perception characteristics of object detections in the perception data. For each perception probe, probabilistic distributions for true positive and false positive values are determined, resulting in true positive and false negative perception probes. Statistical characteristics of true positive perception probes and false positive perception probes are then determined. Based on the statistical characteristics, true positive perception probes are clustered. An axiom is generated to determine statistical constraints for perception validity for each perception probe cluster. The axiom is evaluated to classify the perception probes as valid or erroneous. Optimal perception parameters are generated by solving an optimization problem based on the axiom.
    Type: Grant
    Filed: March 22, 2022
    Date of Patent: December 26, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Hyukseong Kwon, Amit Agarwal, Amir M. Rahimi, Kevin Lee, Alexie Pogue, Rajan Bhattacharyya
  • Patent number: 11810006
    Abstract: A vehicle and a system and a method of operating the vehicle. The system includes a reasoning engine, an episodic memory, a resolver and a controller. The reasoning engine infers a plurality of possible scenarios based on a current state of an environment of the vehicle. The episodic memory determines a historical likelihood for each of the plurality of possible scenarios. The resolver selects a scenario from the plurality of possible scenarios using the historical likelihoods. The controller operates the vehicle based on the selected scenario.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: November 7, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Jaehoon Choe, Rajan Bhattacharyya, Kyungnam Kim, Kenji Yamada
  • Patent number: 11801847
    Abstract: Described is a system for analyzing time series data. A sequence of symbols is generated from a set of time series input data related to a moving vehicle using automatic segmentation. A grammar is extracted from the sequence of symbols, and the grammar is a subset of a probabilistic context-free grammar (PCFG). Using the grammar, time series input data can be analyzed, and a prediction of the vehicle's movement can be made. Vehicle operations for an autonomous vehicle are determined using the prediction.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: October 31, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Kenji Yamada, Rajan Bhattacharyya, Aruna Jammalamadaka, Dmitriy V. Korchev, Chong Ding
  • Patent number: 11747164
    Abstract: A method for updating a localization of an autonomous vehicle includes receiving perception input data from a sensor of the autonomous vehicle and receiving map data including road lane information in a vicinity of the autonomous vehicle. The method includes processing the perception input data to extract perceived road lane information including a perceived x position, a perceived y position, a perceived z position, a perceived lane type, a perceived lane color, and a perceived lane curvature and processing the map data to extract map road lane information including a map x position, a map y position, a map z position, a map lane type, a map lane color, and a map lane curvature. The method includes calculating a transformation matrix from the perceived road lane information and the map road lane information and updating the map data and a localization of the vehicle based on the transformation matrix.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: September 5, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Meena Nagappan, Hyukseong Kwon, Joshua Lampkins, Rajan Bhattacharyya
  • Patent number: 11724720
    Abstract: A method using unsupervised velocity prediction and correction for urban driving from sequences of noisy position estimates includes: performing a vehicle velocity prediction for one or more other vehicles in a vicinity of a host automobile vehicle; calculating a first heuristic based on a uniformity test; calculating a second heuristic based on a vehicle speed of the one or more other vehicles; combining the first heuristic and the second heuristic using a weighted sum; determining an uncertainty mask applying the combined first heuristic and the second heuristic and a heuristic threshold; and applying the uncertainty mask to identify a velocity correction for use by the host automobile vehicle.
    Type: Grant
    Filed: September 28, 2021
    Date of Patent: August 15, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Amit Agarwal, Hyukseong Kwon, Rajan Bhattacharyya, Michael J. Daily, Gavin D. Holland
  • Patent number: 11694120
    Abstract: Described is a system for detecting and correcting perception errors in a perception system. In operation, the system generates a list of detected objects from perception data of a scene, which allows for the generation of a list of background classes from backgrounds in the perception data associated with the list of detected objects. For each detected object in the list of detected objects, a closest background class is identified from the list of background classes. Vectors can then be used to determine a semantic feature, which is used to identify axioms. An optimal perception parameter is then generated, which is used to adjust perception parameters in the perception system to minimize perception errors.
    Type: Grant
    Filed: March 2, 2021
    Date of Patent: July 4, 2023
    Assignee: HRL LABORATORIES, LLC
    Inventors: Amit Agarwal, Amir M. Rahimi, Hyukseong Kwon, Rajan Bhattacharyya
  • Patent number: 11661082
    Abstract: A control system of the autonomous vehicle may generate multiple possible behavior control movements based on the driving goal and the assessment of the vehicle environment. In doing so, the method and system selects one of the best behavior control, among the multiple possible movements, and the selection is based on the quantitative grading of its driving behavior.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: May 30, 2023
    Assignee: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Kenji Yamada, Kyungnam Kim, Rajan Bhattacharyya
  • Patent number: 11654933
    Abstract: An ego vehicle includes decider modules and a grader module coupled to a resolver module. The decider modules generate trajectory decisions at a current time, generate a current two-dimensional slice of a flat space around the ego vehicle, generate future two-dimensional slices of the flat space by projecting the current two-dimensional slice of the flat space forward in time, and generate a three-dimensional state space by stacking the current two-dimensional slice and the future two-dimensional slices. The grader module generates rewards for the trajectory decisions based on a recent behavior of an ego vehicle. The resolver module selects a final trajectory decision for the ego vehicle from the trajectory decisions based on the three-dimensional state space and the rewards. The current two-dimensional slice includes a current ego vehicle location and current neighboring vehicle locations. The future two-dimensional slices include future ego vehicle locations and future neighboring vehicle locations.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: May 23, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Tiffany J. Hwu, Iman Mohammadrezazadeh, Michael J. Daily, Rajan Bhattacharyya
  • Publication number: 20230109712
    Abstract: A method for performing object detection during autonomous driving includes: performing 3D object detection in a 3D object detection segment; uploading an output of multiple sensors in communication with the 3D object detection segment to multiple point clouds; transferring point cloud data from the multiple point clouds to a Region Proposal Network (RPN); independently performing 2D object detection in a 2D object detector in parallel with the 3D object detection in the 3D object detection segment; and taking a given input image and simultaneously learning box coordinates and class label probabilities in a 2D object detection network operating to treat object detection as a regression problem.
    Type: Application
    Filed: September 28, 2021
    Publication date: April 13, 2023
    Inventors: RODOLFO VALIENTE ROMERO, HYUKSEONG KWON, RAJAN BHATTACHARYYA, MICHAEL J. DAILY, GAVIN D. HOLLAND
  • Patent number: 11618479
    Abstract: A method of path planning for a host vehicle includes: receiving host vehicle, environmental and obstacle information; calculating one or more projected host vehicle locations; computing a projected obstacle location for each obstacle; and determining a collision potential between each projected host vehicle location and each projected obstacle location. Until a maximum number of steps is reached, and while at least one projected host vehicle location has an associated collision potential below a collision threshold, the method further includes repeating the calculating, computing and determining steps.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: April 4, 2023
    Assignee: GM Global Technology Operations LLC
    Inventors: Divya P. Kulkarni, Hyukseong Kwon, Kenji Yamada, Tiffany J. Hwu, Kyungnam Kim, Rajan Bhattacharyya, Michael J. Daily
  • Publication number: 20230102443
    Abstract: A method for monitoring uncertainty for human-like behavioral modulation of trajectory planning includes: retrieving map and agent information of a current driving state of an autonomously operated host automobile vehicle; dividing uncertainty conditions affecting a trajectory of the host automobile vehicle into an expected uncertainty and an unexpected uncertainty; calculating the expected uncertainty in a first operation branch by forming attention zones according to identified portions of lanes which may potentially collide with a planned route of the host automobile vehicle; determining the unexpected uncertainty in a second operation branch by calculating an anomaly score for any other vehicles in a surrounding area of the host automobile vehicle positioned in the lanes which may potentially collide with the planned route of the host automobile vehicle; and modulating trajectory operation signals determined for the expected uncertainty if the unexpected uncertainty meets or exceeds a predetermined thresh
    Type: Application
    Filed: September 28, 2021
    Publication date: March 30, 2023
    Inventors: RAJAN BHATTACHARYYA, TIFFANY J. HWU, MICHAEL J. DAILY, HYUKSEONG KWON, MIA LEVY
  • Publication number: 20230100741
    Abstract: A method using unsupervised velocity prediction and correction for urban driving from sequences of noisy position estimates includes: performing a vehicle velocity prediction for one or more other vehicles in a vicinity of a host automobile vehicle; calculating a first heuristic based on a uniformity test; calculating a second heuristic based on a vehicle speed of the one or more other vehicles; combining the first heuristic and the second heuristic using a weighted sum; determining an uncertainty mask applying the combined first heuristic and the second heuristic and a heuristic threshold; and applying the uncertainty mask to identify a velocity correction for use by the host automobile vehicle.
    Type: Application
    Filed: September 28, 2021
    Publication date: March 30, 2023
    Inventors: AMIT AGARWAL, Hyukseong Kwon, Rajan Bhattacharyya, Michael J. Daily, Gavin D. Holland
  • Patent number: 11524703
    Abstract: A system for interactive hypothesis estimation of multi-vehicle traffic for autonomous driving is provided. The system includes a sensor upon a host vehicle providing data regarding an operating environment of the host vehicle and a computerized device. The computerized device is operable to monitor the data from the sensor, identify a road surface based upon the data, and identify a neighborhood object based upon the data. The computerized device is further operable to determine a pressure score for the neighborhood object based upon a likelihood that the neighborhood object will conflict with the host vehicle based upon the road surface and the neighborhood object, selectively track the neighborhood object based upon the pressure score, and navigate the host vehicle based upon the tracking of the neighborhood object.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: December 13, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Scott Rad, Hyukseong Kwon, Rajan Bhattacharyya
  • Patent number: 11494486
    Abstract: Described is a system for continuously predicting and adapting optimal strategies for attacker elicitation. The system includes a global bot controlling processor unit and one or more local bot controlling processor units. The global bot controlling processor unit includes a multi-layer network software unit for extracting attacker features from diverse, out-of-band (OOB) media sources. The global controlling processing unit further includes an adaptive behavioral game theory (GT) software unit for determining a best strategy for eliciting identifying information from an attacker. Each local bot controlling processor unit includes a cognitive model (CM) software unit for estimating a cognitive state of the attacker and predicting attacker behavior. A generative adversarial network (GAN) software unit predicts the attacker's strategies.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: November 8, 2022
    Assignee: HRL LABORATORIES, LLC
    Inventors: Hyun (Tiffany) J. Kim, Rajan Bhattacharyya, Samuel D. Johnson, Soheil Kolouri, Christian Lebiere, Jiejun Xu
  • Patent number: 11485387
    Abstract: A method of predictive navigation control for an ego vehicle includes: comparing a cue node to each of a plurality of episodic memory nodes in an episodic memory structure, wherein the cue node represents a new event representing distances, speeds and headings of one or more newly observed objects about the ego vehicle, and wherein the episodic memory structure includes a network of nodes each representing a respective previously existing event and having a respective node risk and likelihood; determining which of the nodes has a smallest respective difference metric, thus defining a best matching node; consolidating the cue node with the best matching node if the smallest difference metric is less than a match tolerance, else adding a new node corresponding to the cue node to the episodic memory structure; and identifying a likeliest next node and/or a riskiest next node.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 1, 2022
    Assignee: GM Global Technology Operations LLC
    Inventors: Michael D. Howard, Hyukseong Kwon, Rajan Bhattacharyya
  • Publication number: 20220221301
    Abstract: A method for updating a localization of an autonomous vehicle includes receiving perception input data from a sensor of the autonomous vehicle and receiving map data including road lane information in a vicinity of the autonomous vehicle. The method includes processing the perception input data to extract perceived road lane information including a perceived x position, a perceived y position, a perceived z position, a perceived lane type, a perceived lane color, and a perceived lane curvature and processing the map data to extract map road lane information including a map x position, a map y position, a map z position, a map lane type, a map lane color, and a map lane curvature. The method includes calculating a transformation matrix from the perceived road lane information and the map road lane information and updating the map data and a localization of the vehicle based on the transformation matrix.
    Type: Application
    Filed: January 13, 2021
    Publication date: July 14, 2022
    Applicant: GM GLOBAL TECHNOLOGY OPERATIONS LLC
    Inventors: Meena Nagappan, Hyukseong Kwon, Joshua Lampkins, Rajan Bhattacharyya