Patents by Inventor Shouvik Das

Shouvik Das 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: 20230278723
    Abstract: Methods and systems are provided for slewing a light beam axis directly between points on the ground. One method involves determining a first position associated with a beam axis of a lighting arrangement in a Cartesian reference frame based on an initial orientation of the lighting arrangement in a spherical reference frame, determining an adjustment for the lighting arrangement in the Cartesian reference frame in response to a user input, determining an updated position for the beam axis in the Cartesian reference frame based on the first position and the adjustment in the Cartesian reference frame, transforming the updated position for the beam axis in the Cartesian reference frame to an updated orientation of the lighting arrangement in the spherical reference frame, and concurrently commanding actuators associated with the lighting arrangement to slew the lighting arrangement from the initial orientation to the updated orientation in the spherical reference frame.
    Type: Application
    Filed: April 14, 2022
    Publication date: September 7, 2023
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Sunit Kumar Saxena, Abhijit K, Kartik Brahmbhatt, Richard Policy, Craig Giffen
  • Publication number: 20230282001
    Abstract: A vison-based landing system comprises a processor onboard an aerial vehicle, an onboard vision sensor, onboard aiding sensors, and a data storage unit. The processor hosts an adaptive feature extraction module operative to perform a method that comprises capturing an image of a landing area having a plurality of edge features; calculating an estimated slope of an expected edge feature; calculating an expected gradient direction of the expected edge feature; selecting a horizontal basis kernel for the expected edge feature along an expected horizontal gradient; selecting a vertical basis kernel for the expected edge feature along an expected vertical gradient; calculating a combined convolution kernel for the expected edge feature based on the horizontal and vertical basis kernels, the estimated slope, and the expected gradient direction; and performing a convolution operation on the image using the combined convolution kernel to obtain an edge feature image of the landing area.
    Type: Application
    Filed: April 21, 2022
    Publication date: September 7, 2023
    Applicant: Honeywell International Inc.
    Inventors: Nikhil Gupta, Shouvik Das
  • Publication number: 20230264830
    Abstract: A method for controlling an orientation of a searchlight on a vehicle is provided. The method comprises: obtaining a target range to a point of interest (POI) at a target; determining a searchlight position and attitude; calculating a three dimensional position at the POI using searchlight azimuth and tilt actuator angles, the target range, and the searchlight position and attitude, while a searchlight light head continues to point at the 3D target position despite changes in movement or orientation of the vehicle; calculating a desired searchlight orientation including azimuth angle and tilt angle to point the light head at the target through inverting a kinematic relationship between the vehicle and the searchlight; calculating compensatory actuator angles for a plurality of searchlight actuators to achieve the desired searchlight orientation based on error measurements calculated from a current orientation; and commanding the plurality of searchlight actuators to the compensatory actuator angles.
    Type: Application
    Filed: April 6, 2022
    Publication date: August 24, 2023
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Sunit Kumar Saxena, Abhijit Kulkarni, Kartik Brahmbhatt, William Tyson, III, Craig Giffen
  • Publication number: 20230131589
    Abstract: A method for segmenting objects in a scene by an electronic device is provided. The method includes inputting at least one input frame of the scene into a pre-trained neural network model, the scene including a plurality of objects; determining a position and a shape of each object of the plurality of objects in the scene using the pre-trained neural network model; determining an array of coefficients for pixels associated with each object of the plurality of objects in the scene using the pre-trained neural network model; and generating a segment mask for each object of the plurality of objects based on the position, the shape, and the array of coefficients for each object of the plurality of objects in the scene.
    Type: Application
    Filed: November 8, 2022
    Publication date: April 27, 2023
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Biplab Chandra DAS, Kiran Nanjunda Iyer, Shouvik Das, Himadri Sekhar Bandyopadhyay
  • Patent number: 11549637
    Abstract: A gimbal assembly is provided that allows for more than a single rotation about a rotational axis in both a first rotational direction and a second rotational direction.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: January 10, 2023
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Jijo Thomas, Ramakrishna Rao P.V, Varun Ananda, Deepak Mahajan, Renukaprasad N, Subhashree Rajagopal, Shouvik Das
  • Publication number: 20220260721
    Abstract: Systems and Embodiments for a structured light navigation aid are provided. In certain embodiments, a system includes a structured light emitter that emits structured light towards a surface, wherein the structured light emitter can movably change a direction of emitted structured light. Additionally, the system includes a structured light receiver that receives light from an environment, wherein the structured light receiver identifies reflected structured light from the surface in the received light and calculates navigation information from the reflected structured light. Further, the system includes one or more processors that control the structured light as one of a pre-programmed pattern or a pattern determined during operation of the structured light emitter.
    Type: Application
    Filed: April 1, 2021
    Publication date: August 18, 2022
    Applicant: Honeywell International Inc.
    Inventors: Shouvik Das, Deena Dayalan Kothandaraman
  • Patent number: 11415990
    Abstract: A method of tracking an image feature is described. The method comprises acquiring an image with a camera, and determining, using processing circuitry, a bounding area in the image, the bounding area surrounding a feature in the image. The method further comprises determining, using processing circuitry, a rotation axis and a rotation angle based on a first focal length of the camera and a position of the bounding area relative to a center of the image. The method further comprises determining, using processing circuitry, at least one of a pan angle, a roll angle, and a tilt angle for the camera at which the bounding area is centered in the image. The method further comprises adjusting, using a gimbal, an orientation of the camera based on the at least one of the pan angle, the roll angle, and the tilt angle.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: August 16, 2022
    Assignee: Honeywell International Inc.
    Inventors: Shouvik Das, Nikhil Gupta
  • Publication number: 20210407303
    Abstract: Disclosed are methods, systems, and non-transitory computer-readable medium for managing energy use in a vehicle. For instance, the method may include receiving forecasted data from a first external source, receiving real-time data corresponding to at least one weather parameter at a first location at a first time, and continuously determining whether to perform an adjustment to a control parameter of the vehicle by using a machine learning model that is based on the forecasted data for the at least one weather parameter, the real-time data for the at least one weather parameter, a battery condition of the vehicle, and/or an estimated amount of energy consumed by traveling along a first navigation path.
    Type: Application
    Filed: August 31, 2020
    Publication date: December 30, 2021
    Inventors: Aralakuppe YOGESHA, Shouvik DAS, Mohammed Ibrahim MOHIDEEN, Perumal KUMAR, Rafeek SAINUDEEN, Parag RAO, Abhishek ALLADI
  • Publication number: 20210348712
    Abstract: A gimbal assembly is provided that allows for more than a single rotation about a rotational axis in both a first rotational direction and a second rotational direction.
    Type: Application
    Filed: June 29, 2020
    Publication date: November 11, 2021
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Jijo Thomas, Ramakrishna Rao P.V, Varun Ananda, Deepak Mahajan, Renukaprasad N, Subhashree Rajagopal, Shouvik Das
  • Publication number: 20210341922
    Abstract: A method of tracking an image feature is described. The method comprises acquiring an image with a camera, and determining, using processing circuitry, a bounding area in the image, the bounding area surrounding a feature in the image. The method further comprises determining, using processing circuitry, a rotation axis and a rotation angle based on a first focal length of the camera and a position of the bounding area relative to a center of the image. The method further comprises determining, using processing circuitry, at least one of a pan angle, a roll angle, and a tilt angle for the camera at which the bounding area is centered in the image. The method further comprises adjusting, using a gimbal, an orientation of the camera based on the at least one of the pan angle, the roll angle, and the tilt angle.
    Type: Application
    Filed: August 24, 2020
    Publication date: November 4, 2021
    Inventors: Shouvik Das, Nikhil Gupta
  • Patent number: 11009892
    Abstract: An active human-machine interface feedback system includes a user interface, a pitch angle sensor, a roll angle sensor, a spherical motor, and a control circuit. The user interface adapted to receive user input and is configured, upon receipt of the user input, to move, about one or both of a pitch axis and a roll axis, to a user interface position. The pitch angle sensor is configured to sense the pitch angle component of the user interface position. The roll angle sensor is configured to sense the roll angle component of the user interface position. The spherical motor is coupled to the user interface and is symmetrically disposed about the origin. The control circuit determines a polar angle (?) of the user interface relative to the origin, determine an azimuthal angle (?) of the user interface relative to the origin, and supply current to the first, second, and third coils.
    Type: Grant
    Filed: March 19, 2019
    Date of Patent: May 18, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Pablo Bandera, Deena Dayalan Kothandaraman
  • Publication number: 20210016895
    Abstract: Provided are systems and methods for controlling a search and rescue (SAR) light on a rotorcraft. The system includes a processor programmed to: for each cartesian input point in a sequence defining a cartesian pattern, determine an initial light head orientation as a function of the real-time rotorcraft state; generate and transmit a pan command and a tilt command as a function of the initial light head orientation and the cartesian input point; and identify a delta-range. A pan-tilt-zoom (PTZ) camera is configured to continuously slave and have a field of view centered on a beam axis of the SAR light. The PTZ camera captures a video stream and transmits it; zooms in on the field of view of the PTZ camera when the delta-range is positive; and zooms out on the field of view of the PTZ camera when the delta-range is negative.
    Type: Application
    Filed: July 17, 2019
    Publication date: January 21, 2021
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Deepthi Sethuraman, Anupama Srinivasulu
  • Patent number: 10894613
    Abstract: Systems and methods for an auto-land system for a rotorcraft are provided. The system includes, a search light (SL) assembly configured to receive user input directing the SL to a point of interest (POI) and determine an actual SL orientation and an actual SL range to the POI; and, a searchlight controller operationally coupled to the search light assembly, and configured to: responsive to receiving a command to auto-land at the POI, begin (i) generating a desired trajectory from the rotorcraft actual orientation and rotorcraft actual range to the POI; (ii) generating guidance commands for navigating the rotorcraft in accordance with the desired trajectory; (iii) monitoring an actual SL range and an actual SL orientation; and (iv) generating controlling commands for the searchlight assembly in accordance with the coordinates of the POI.
    Type: Grant
    Filed: December 4, 2018
    Date of Patent: January 19, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Sunit Kumar Saxena, Rafeek Sainudeen, Naman Rawal
  • Patent number: 10882637
    Abstract: Provided are systems and methods for controlling a search and rescue (SAR) light on a rotorcraft. The system includes a processor programmed to: for each cartesian input point in a sequence defining a cartesian pattern, determine an initial light head orientation as a function of the real-time rotorcraft state; generate and transmit a pan command and a tilt command as a function of the initial light head orientation and the cartesian input point; and identify a delta-range. A pan-tilt-zoom (PTZ) camera is configured to continuously slave and have a field of view centered on a beam axis of the SAR light. The PTZ camera captures a video stream and transmits it; zooms in on the field of view of the PTZ camera when the delta-range is positive; and zooms out on the field of view of the PTZ camera when the delta-range is negative.
    Type: Grant
    Filed: July 17, 2019
    Date of Patent: January 5, 2021
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Deepthi Sethuraman, Anupama Srinivasulu
  • Publication number: 20200358334
    Abstract: A spherical resolver system includes a spherical body, an outer body, a first sensor coil, a second sensor coil, a third sensor coil, a first primary coil, and a circuit. The spherical body has a first axis of symmetry, a second axis of symmetry, and a third axis of symmetry, and the first, second, and third axes of symmetry are disposed perpendicular to each other. The circuit is coupled to the first primary coil and is operable to supply a first alternating current (AC) reference signal (Vr1) to the first primary coil, whereby a first sensor signal (Vx) is selectively induced in the first sensor coil, second sensor signal (Vy) is selectively induced in the second sensor coil, and a third sensor signal (Vz) is selectively induced in the third sensor coil, and supplies one or more signals representative of the sensor position.
    Type: Application
    Filed: May 7, 2019
    Publication date: November 12, 2020
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Deena Dayalan Kothandaraman, Shouvik Das, Saurabh Agrawal, Renju Chandrasekhara Panicker
  • Patent number: 10819183
    Abstract: A spherical resolver system includes a spherical body, an outer body, a first sensor coil, a second sensor coil, a third sensor coil, a first primary coil, and a circuit. The spherical body has a first axis of symmetry, a second axis of symmetry, and a third axis of symmetry, and the first, second, and third axes of symmetry are disposed perpendicular to each other. The circuit is coupled to the first primary coil and is operable to supply a first alternating current (AC) reference signal (Vr1) to the first primary coil, whereby a first sensor signal (Vx) is selectively induced in the first sensor coil, second sensor signal (Vy) is selectively induced in the second sensor coil, and a third sensor signal (Vz) is selectively induced in the third sensor coil, and supplies one or more signals representative of the sensor position.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: October 27, 2020
    Assignee: HONEYWELL INTERNATIONAL INC.
    Inventors: Deena Dayalan Kothandaraman, Shouvik Das, Saurabh Agrawal, Renju Chandrasekhara Panicker
  • Publication number: 20200301447
    Abstract: An active human-machine interface feedback system includes a user interface, a pitch angle sensor, a roll angle sensor, a spherical motor, and a control circuit. The user interface adapted to receive user input and is configured, upon receipt of the user input, to move, about one or both of a pitch axis and a roll axis, to a user interface position. The pitch angle sensor is configured to sense the pitch angle component of the user interface position. The roll angle sensor is configured to sense the roll angle component of the user interface position. The spherical motor is coupled to the user interface and is symmetrically disposed about the origin. The control circuit determines a polar angle (?) of the user interface relative to the origin, determine an azimuthal angle (?) of the user interface relative to the origin, and supply current to the first, second, and third coils.
    Type: Application
    Filed: March 19, 2019
    Publication date: September 24, 2020
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Pablo Bandera, Deena Dayalon Kothandaraman
  • Publication number: 20200172264
    Abstract: Systems and methods for an auto-land system for a rotorcraft are provided. The system includes, a search light (SL) assembly configured to receive user input directing the SL to a point of interest (POI) and determine an actual SL orientation and an actual SL range to the POI; and, a searchlight controller operationally coupled to the search light assembly, and configured to: responsive to receiving a command to auto-land at the POI, begin (i) generating a desired trajectory from the rotorcraft actual orientation and rotorcraft actual range to the POI; (ii) generating guidance commands for navigating the rotorcraft in accordance with the desired trajectory; (iii) monitoring an actual SL range and an actual SL orientation; and (iv) generating controlling commands for the searchlight assembly in accordance with the coordinates of the POI.
    Type: Application
    Filed: December 4, 2018
    Publication date: June 4, 2020
    Applicant: HONEYWELL INTERNATIONAL INC.
    Inventors: Shouvik Das, Sunit Kumar Saxena, Rafeek Sainudeen, Naman Rawal