Laser-based methods and systems for capturing the condition of a physical structure
First Claim
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1. A computer-implemented method of inspecting a structure, the method comprising:
- deploying a three-dimensional (3D) data collection system that includes one or more 3D scanners conveyed by a balloon, the 3D data collection system physically connected to a tether;
transmitting, by a laser projector of the 3D scanners, a laser pulse directed toward a point on a surface of a structure;
receiving, at a laser light sensor of the one or more 3D scanners, the laser pulse, wherein the laser pulse has reflected off of the point on the surface of the structure;
calculating, by one or more processors, a time-of-flight measurement by measuring a difference between a first time at which the laser pulse was transmitted and a second time at which the laser pulse was received;
calculating, by the one or more processors, a distance measurement based on the time-of-flight measurement;
based on the calculated distance measurement;
generating a 3D data point corresponding to the point on the surface of the structure, the 3D data point having a coordinate set relating to vertical, horizontal, and depth distance measurements;
storing a point cloud at one or more memories, wherein the point cloud includes the generated 3D data point;
automatically analyzing, by the one or more processors, the point cloud to identify one or more features of the surface of the structure, wherein the one or more features represent potential damage;
generating, by the one or more processors, an estimation of a condition of the surface of the structure based on the identified one or more features; and
storing the generated estimation at the one or more memories.
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Abstract
In a computer-implemented method and system for capturing the condition of a structure, the structure is scanned with a three-dimensional (3D) scanner. The 3D scanner generates 3D data. A point cloud or 3D model is constructed from the 3D data. The point cloud or 3D model is then analyzed to determine the condition of the structure.
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Citations
17 Claims
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1. A computer-implemented method of inspecting a structure, the method comprising:
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deploying a three-dimensional (3D) data collection system that includes one or more 3D scanners conveyed by a balloon, the 3D data collection system physically connected to a tether; transmitting, by a laser projector of the 3D scanners, a laser pulse directed toward a point on a surface of a structure; receiving, at a laser light sensor of the one or more 3D scanners, the laser pulse, wherein the laser pulse has reflected off of the point on the surface of the structure; calculating, by one or more processors, a time-of-flight measurement by measuring a difference between a first time at which the laser pulse was transmitted and a second time at which the laser pulse was received; calculating, by the one or more processors, a distance measurement based on the time-of-flight measurement; based on the calculated distance measurement;
generating a 3D data point corresponding to the point on the surface of the structure, the 3D data point having a coordinate set relating to vertical, horizontal, and depth distance measurements;storing a point cloud at one or more memories, wherein the point cloud includes the generated 3D data point; automatically analyzing, by the one or more processors, the point cloud to identify one or more features of the surface of the structure, wherein the one or more features represent potential damage; generating, by the one or more processors, an estimation of a condition of the surface of the structure based on the identified one or more features; and storing the generated estimation at the one or more memories. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A property inspection system, the property inspection system comprising:
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a 3D data collection system including a balloon and one or more 3D scanners affixed to the balloon for conveyance, the one or more 3D scanners including a laser projector and a laser light sensor, the 3D data collection system physically connected to a tether; one or more processors communicatively connected to the one or more 3D scanners; and one or more memory devices communicatively connected to the one or more processors, the one or more memory devices including instructions that, when executed, cause the one or more processors to; calculate a time-of-flight measurement by measuring a difference between;
(i) a first time at which a laser pulse was transmitted by the laser projector of the one or more 3D scanners toward a point on the surface of the structure, and (ii) a second time at which the laser pulse was received at the laser light sensor;calculate a distance measurement based on the time-of-flight measurement; based on the calculated distance measurement;
generate a 3D data point corresponding to the point on the surface of the structure, the 3D data point having a coordinate set relating to vertical, horizontal, and depth distance measurements;store a point cloud at one or more memories, wherein the point cloud includes the generated 3D data point; automatically analyze the point cloud to identify one or more features of the surface of the structure, wherein the one or more features represent potential damage; generate an estimation of a condition of the surface of the structure based on the identified one or more features; and storing the generated estimation at the one or more memories. - View Dependent Claims (14, 15, 16, 17)
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Specification