Systems and methods for capturing images and annotating the captured images with information
First Claim
Patent Images
1. A method for training a classifier of a mobile robot, the method comprising:
- obtaining a plurality of image frames along a drive direction of the mobile robot,the plurality of image frames comprising a base image frame corresponding to an initial pose of the mobile robot and subsequent image frames obtained at intervals during forward travel of the mobile robot,the mobile robot having a forward facing camera mounted thereon for obtaining the image frames,the camera having a field of view including a floor in front of the mobile robot, andthe mobile robot having a memory device configured to store a learned data set of a plurality of descriptors determined by mobile robot events;
assuming that a location is traversable floor, wherein the mobile robot is configured to detect traversable floor and non-traversable non-floor with one or more sensors mounted on the mobile robot;
determining that the location is non-traversable non-floor based on a robot sensor event at the location, the robot sensor event comprising detection of a collision;
retrieving from a frame buffer an image frame obtained immediately prior to the robot sensor event;
generating a floor descriptor corresponding to characteristics of the floor at a bottom of the image frame captured by the camera immediately prior to the robot sensor event;
generating a non-floor descriptor corresponding to characteristics of the non-traversable non-floor at a top of the image frame captured by the camera immediately prior to the robot sensor event; and
storing the floor descriptor and the non-floor descriptor in the learned data set.
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Abstract
The present teachings provide an autonomous mobile robot that includes a drive configured to maneuver the robot over a ground surface within an operating environment; a camera mounted on the robot having a field of view including the floor adjacent the mobile robot in the drive direction of the mobile robot; a frame buffer that stores image frames obtained by the camera while the mobile robot is driving; and a memory device configured to store a learned data set of a plurality of descriptors corresponding to pixel patches in image frames corresponding to portions of the operating environment and determined by mobile robot sensor events.
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Citations
28 Claims
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1. A method for training a classifier of a mobile robot, the method comprising:
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obtaining a plurality of image frames along a drive direction of the mobile robot, the plurality of image frames comprising a base image frame corresponding to an initial pose of the mobile robot and subsequent image frames obtained at intervals during forward travel of the mobile robot, the mobile robot having a forward facing camera mounted thereon for obtaining the image frames, the camera having a field of view including a floor in front of the mobile robot, and the mobile robot having a memory device configured to store a learned data set of a plurality of descriptors determined by mobile robot events; assuming that a location is traversable floor, wherein the mobile robot is configured to detect traversable floor and non-traversable non-floor with one or more sensors mounted on the mobile robot; determining that the location is non-traversable non-floor based on a robot sensor event at the location, the robot sensor event comprising detection of a collision; retrieving from a frame buffer an image frame obtained immediately prior to the robot sensor event; generating a floor descriptor corresponding to characteristics of the floor at a bottom of the image frame captured by the camera immediately prior to the robot sensor event; generating a non-floor descriptor corresponding to characteristics of the non-traversable non-floor at a top of the image frame captured by the camera immediately prior to the robot sensor event; and storing the floor descriptor and the non-floor descriptor in the learned data set. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An autonomous mobile robot comprising:
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a drive configured to maneuver the autonomous mobile robot over a floor within an operating environment; a camera mounted on the autonomous mobile robot having a field of view including the floor adjacent the autonomous mobile robot in a drive direction of the autonomous mobile robot; a frame buffer that stores image frames obtained by the camera while the autonomous mobile robot is driving; a memory device configured to store a learned data set of a plurality of descriptors corresponding to pixel patches in ones of the image frames corresponding to portions of the operating environment and determined by mobile robot sensor events; and one or more processors configured to execute a training process for a classifier of the learned data set, the training process comprising; determining based on one or more mobile robot sensor events that the autonomous mobile robot collided with an obstacle; retrieving a pre-collision frame from the frame buffer; and generating a descriptor corresponding to at least part of the obstacle observed in the pre-collision frame. - View Dependent Claims (8)
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9. An autonomous mobile robot comprising:
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a drive configured to maneuver the autonomous mobile robot over a floor within an operating environment; a camera mounted on the autonomous mobile robot having a field of view including the floor adjacent the autonomous mobile robot in a drive direction of the autonomous mobile robot; a frame buffer that stores image frames obtained by the camera while the autonomous mobile robot is driving; and a memory device configured to store a learned data set of a plurality of descriptors corresponding to pixel patches in ones of the image frames corresponding to portions of the operating environment and determined by sensor events; one or more processors executing a training process for a classifier of the learned data set, the training process comprising; assuming that a portion of a base image frame is traversable floor, wherein the autonomous mobile robot is configured to detect traversable floor and non-traversable non-floor with one or more sensors mounted on the autonomous mobile robot; determining whether the autonomous mobile robot has traversed a threshold distance in a same direction since obtaining the base image frame; identifying an upper portion and a lower portion of the base image frame; identifying a section of the lower portion of the base image frame corresponding to a current pose of the autonomous mobile robot, the section being an area of the floor depicted in the lower portion of the base image frame at a depth corresponding to a drive distance traversed by the mobile robot from an initial pose to the current pose; generating a floor descriptor of the section; generating a non-floor descriptor corresponding to characteristics of the non-traversable non-floor within the upper portion of the base image frame responsive to detecting a sensor event comprising a collision; and storing the floor descriptor and the non-floor descriptor in the learned data set. - View Dependent Claims (10, 11, 12, 13)
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14. A method for training a classifier of a mobile robot, the method comprising:
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obtaining a plurality of image frames along a drive direction of the mobile robot, the plurality of image frames comprising a base image frame corresponding to an initial pose of the mobile robot and subsequent image frames obtained at intervals during forward travel of the mobile robot, the mobile robot having a forward facing camera mounted thereon for obtaining the image frames, the camera having a field of view including a floor in front of the mobile robot, and the mobile robot having a memory device configured to store a learned data set of a plurality of descriptors determined by robot sensor events; tracking a location as non-traversable non-floor based on the plurality of descriptors, wherein the mobile robot is configured to detect traversable floor and non-traversable non-floor with one or more sensors mounted on the mobile robot; determining that the location is traversable floor after traveling a distance to the location and not detecting a robot sensor event at the location; generating a floor descriptor corresponding to characteristics of the traversable floor at the location within one of the image frames captured by the camera; determining that a new location is non-traversable non-floor based on detecting a robot sensor event comprising a collision at the new location; generating a non-floor descriptor corresponding to characteristics of the non-traversable non-floor at the new location within one of the image frames captured by the camera; and updating the descriptors in the learned data set. - View Dependent Claims (15, 16, 17, 18)
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19. An autonomous mobile robot comprising:
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a drive configured to maneuver the autonomous mobile robot over a floor within an operating environment; a camera mounted on the mobile robot having a field of view including the floor adjacent the autonomous mobile robot in a drive direction of the autonomous mobile robot; a frame buffer that stores image frames obtained by the camera while the autonomous mobile robot is driving; and a memory device configured to store a learned data set of a plurality of descriptors corresponding to pixel patches in ones of the image frames corresponding to portions of the operating environment and determined by robot sensor events; one or more processors executing a training process for a classifier of the learned data set, the training process comprising; tracking a location as non-traversable non-floor based on the plurality of descriptors, wherein the autonomous mobile robot is configured to detect traversable floor and non-traversable non-floor with one or more sensors mounted on the mobile robot; determining that the location is traversable floor after traveling a distance to the location and not detecting a robot sensor event at the location; generating a floor descriptor corresponding to characteristics of the traversable floor at the location within one of the image frames captured by the camera; determining that a new location is non-traversable non-floor based on detecting a robot sensor event comprising a collision at the new location; generating a non-floor descriptor corresponding to characteristics of the non-traversable non-floor at the new location within one of the image frames captured by the camera; and updating the descriptors in the learned data set. - View Dependent Claims (20, 21, 22, 23)
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24. An autonomous mobile robot comprising:
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a drive configured to maneuver the autonomous mobile robot over a floor within an operating environment; a camera mounted on the mobile robot having a field of view including the floor adjacent the autonomous mobile robot in a drive direction of the autonomous mobile robot; a frame buffer that stores image frames obtained by the camera while the autonomous mobile robot is driving; and a memory device configured to store a learned data set of a plurality of descriptors corresponding to pixel patches in one of the image frames corresponding to portions of the operating environment and determined by mobile robot sensor events; one or more processors executing a training process for a classifier of the learned data set, the training process comprising; detecting a plurality of obstacles located at a plurality of distances from the autonomous mobile robot; tracking a first obstacle that is closest to the autonomous mobile robot and buffering descriptors of the first obstacle in the learned data set; traveling a threshold distance and detecting a second obstacle that is closer to the autonomous mobile robot than the first obstacle; resetting the autonomous mobile robot to not track the first obstacle; and tracking the second obstacle and buffering descriptors of the second obstacle in the learned data set, wherein the descriptors of the first obstacle and/or the second obstacle are determined by at least one mobile robot sensor event comprising a collision. - View Dependent Claims (25, 26, 27, 28)
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Specification