Scale independent tracking pattern

Number: 9672417
Published: 2017-06-06
Filed: 2015-12-31
Assignee: LUCASFILM ENTERTAINMENT COMPANY, LTD.
Inventors: Wooley; Kevin, Mallet; Ronald
CPC: G06V40/23; G06F3/011; G06T7/60; G01B11/254; H04N23/61; G06T7/246
Verdict: Medium Notable software
Source: Google Patents · FreePatentsOnline

The keeper's note

A scale-independent motion capture tracking pattern with dual-resolution regions for accurately tracking a dynamic object at varying distances.

Abstract

In one aspect, a computer implemented method of motion capture, the method includes tracking the motion of a dynamic object bearing a pattern configured such that a first portion of the patterns is tracked at a first resolution and a second portion of the pattern is tracked at a second resolution. The method further includes causing data representing the motion to be stored to a computer readable medium.

Background

BRIEF DESCRIPTION OF THE DRAWINGS(1) The patent or application file contains at least one drawing executed in color. Copies of this patent or patent application publication with color drawing(s) will be provided by the Office upon request and payment of the necessary fee.(2) FIG. 1 is a schematic diagram of an example motion capture system.(3)FIG. 2 shows an example scale independent pattern at different resolutions.(4) FIG. 3A shows an example motion capture bodysuit with a scale independent pattern.(5) FIG. 3B shows an example motion capture bodysuit with some elements of the suit identified.(6) FIG. 4 shows an autonomous automobile on a track with example scale independent waypoints.(7) FIG. 5 is a flowchart of an example process for tracking a scale independent pattern.(8) FIG. 6is a schematic diagram that shows an example of a computing system that can be used in connection with computer-implemented methods and systems described in this document.(9) Likereference symbols in the various drawings indicate like elements.DETAILED DESCRIPTION OF THE INVENTION(10) This document describes systems and techniques in which a pattern is imposed on a target for tracking the target by a computer vision technique. The pattern is trackable over a range of resolutions, and may be described as ‘scale-independent.’ The target can be tracked at a range of distances from capture devices. Additionally, the target can be tracked if it is recorded at a range of image resolutions, image focu

Claims

1. A computer implemented method of machine vision, the method comprising: identifying afirst portion of a scale independent pattern of geometric shapes on an object positioned in an environment at a first resolution; identifying a second portion of the scale independent pattern of geometric shapes on an object positioned in the environment at a second resolution, wherein the second portion of the scale independent pattern cannot be identifiedat the first resolution; causing data related to the identifying to be stored to a computer readable medium; and enabling movement of a second object within an environment based on the identifying. 7. A system for enabling machine vision, the system comprising: one or more vision sensors configured to scan and identify a scale independent pattern of geometric shapes; and a computer-readable storage device having a computer program stored thereon; one or more processing devices operable to execute the computer program, receive input from the one or more vision sensors, and perform operations comprising: identifying a firstportion of a scale independent pattern of geometric shapes on an object positioned in an environment at a first resolution; identifying a second portion of the scale independent pattern of geometric shapes on an object positioned in the environment at a second resolution, wherein the second portion of the scale independent pattern cannot be identified at the first resolution; causing data related to the identifying to be stored to a computer readable medium; and enabling movement of a second object within an environment based on the identifying. 13. A non-transitory computer-readable memory comprising instructions that, when executed by a processor, perform a method comprising: identifying a first portion of ascale independent pattern of geometric shapes on an object positioned in an environment at a first resolution; identifying a second portion of the scale independent pattern of geometric shapes on an object positioned in the environment at a second resolution, wherein the second portion of the scale independent pattern cannot be identified at the first resolution; causing data related to the identifying to be stored to a computer readable medium;and enabling movement of a second object within an environment based on the identifying.