Apparatus and method for generating three-dimensional map using structured light
First Claim
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1. A three-dimensional map-generating apparatus, comprising:
- an odometer to detect a pose of a mobile robot;
a distance-measuring sensor, including a light source module disposed on an upper surface of the mobile robot to emit light upward relative to a movement direction of the mobile robot and a camera module, disposed on the upper surface of the mobile robot, to capture an image formed by the light as reflected downward from an obstacle that is upward of the camera module, to measure a distance to the obstacle for the mobile robot using the captured image; and
a map-generating unit generating a three-dimensional map using the distance measured by the distance-measuring sensor while changing the pose of the mobile robot,wherein the light source module is disposed near an edge on the upper surface of the mobile robot and the camera module is disposed near the edge on the upper surface of the mobile robot, away from the light source module, the light source module and the camera module being separated by a distance which corresponds to an entire range on the upper surface of the mobile robot.
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Abstract
A three-dimensional map-generating apparatus and method using structured light. The apparatus for generating a three-dimensional map using structured light includes an odometer detecting the pose of a mobile robot, and a distance-measuring sensor including a light source module that emits light upward and a camera module that captures an image formed by light reflected from an obstacle, and measuring a distance to the obstacle using the captured image. The apparatus measures a distance to the obstacle using the distance-measuring sensor while changing the relative pose of the mobile robot, thereby generating a three-dimensional map.
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Citations
20 Claims
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1. A three-dimensional map-generating apparatus, comprising:
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an odometer to detect a pose of a mobile robot; a distance-measuring sensor, including a light source module disposed on an upper surface of the mobile robot to emit light upward relative to a movement direction of the mobile robot and a camera module, disposed on the upper surface of the mobile robot, to capture an image formed by the light as reflected downward from an obstacle that is upward of the camera module, to measure a distance to the obstacle for the mobile robot using the captured image; and a map-generating unit generating a three-dimensional map using the distance measured by the distance-measuring sensor while changing the pose of the mobile robot, wherein the light source module is disposed near an edge on the upper surface of the mobile robot and the camera module is disposed near the edge on the upper surface of the mobile robot, away from the light source module, the light source module and the camera module being separated by a distance which corresponds to an entire range on the upper surface of the mobile robot. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 17, 18)
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9. A three-dimensional map-generating method, comprising:
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detecting a pose of a mobile robot; measuring a distance to an obstacle for the mobile robot using a distance-measuring sensor that includes a light source module disposed on an upper surface of the mobile robot emitting light upward relative to a movement direction of the mobile robot and a camera module, disposed on the upper surface of the mobile robot, capturing an image formed by the light as reflected downward from the obstacle, and measuring the distance to the obstacle using the captured image; and generating a three-dimensional map by measuring the distance while changing the pose of the mobile robot, wherein the obstacle is upward of the camera module, and the light source module is disposed near an edge on the upper surface of the mobile robot and the camera module is disposed near the edge on the upper surface of the mobile robot, away from the light source module, the light source module and the camera module being separated by a distance which corresponds to an entire range on the upper surface of the mobile robot. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 19, 20)
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Specification