Method and apparatus for improving range finding system readings

Register USPTO Patent
Application Number 15683255
Grant Number 10690757
Status In Force
Filing Date 2017-08-22
First Publication Date 2020-06-23
Publication Date 2020-06-23
Grant Date 2020-06-23
Owner AI Incorporated (Canada)
Inventor
  • Ebrahimi Afrouzi, Ali
  • Zhang, Chen
  • Schweigert, Sebastian Christopher Daub

Abstract

A computer-implemented method for improving range finding system such as LIDAR, sonar, depth camera, and the like distance readings during instances when the range finding system is tilted. A range finding system continuously takes distance measurements to surfaces opposite the range finding system. As the range finding system is moved toward (or away from) stationary surfaces, a processor examines the successive measurements taken by the range finding system. If the measurements reflect a steady decline (or increase) in distances, readings will be accepted as normal and the system will continue to operate normally. If the measurements reflect a steady decline (or increase) in distances interrupted by measurements at least a predetermined amount or percentage greater than the measurements immediately before and after the interruption, the interrupting measurements are flagged and discarded.

IPC Classes  ?

  • G01C 25/00 - Manufacturing, calibrating, cleaning, or repairing instruments or devices referred to in the other groups of this subclass
  • G01S 7/497 - Means for monitoring or calibrating
  • G01S 17/08 - Systems determining position data of a target for measuring distance only