Method and an apparatus for capturing three-dimensional data of an area of space
First Claim
1. A method for capturing three-dimensional data of an area of space, comprising:
- providing a laser scanner comprising a transmitter and a receiver,sending out a plurality of measuring beams (Ls) by means of the transmitter to a plurality of measuring points in the area of space,receiving a plurality of reflected beams (Lr) which are reflected by the measuring points, anddetermining a plurality of distances to the plurality of measuring points as a function of the reflected beams (Lr),determining for each measuring point of the plurality of measuring points a gray scale value that depends on an intensity of respective ones of the plurality of reflected beams (Lr), andrecording a cloud of points, representative of the plurality of measuring points in the area of space, determined as a function of the plurality of distances and respective gray scale values, wherein the area of space comprises at least one object which contains a hidden channel having a visible entry opening, a rod-shaped element being inserted into the channel in such a manner that a free end proximal portion of the rod-shaped element protrudes from the entry opening, a first distance the rod-shaped element comprising a defined geometric shape having a first three-dimensional coordinate and at least one second three-dimensional coordinate in the area of space, an ideal image of the geometric shape being matched to the cloud of points that represents measuring points of the geometric shape, the first three-dimensional coordinate to a first measuring point at the free end proximal portion and at least one second distance the at least one second three-dimensional coordinate to a second measuring point at the free end proximal portion being determined using the ideal image that is matched to the cloud of points that represent measuring points of the geometric shape, and an orientation of the hidden channel being determined as a function of a vector between the first and second distance three-dimensional coordinates.
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Abstract
In a method for capturing three-dimensional data of an area of space, a plurality of measuring beams (Ls) are sent out to a plurality of measuring points. A detector (50) receives a plurality of reflected beams (Lr) which are reflected by the measuring points (34a). A plurality of distances to the measuring points (34a, 34b) are determined as a function of the reflected beams (Lr). According to one aspect of the invention, at least one object (30) which comprises a hidden channel (66) having a visible entry opening (72) is located in the area of space. A rod-shaped element (32) is inserted into the channel (66) in such a manner that a free end proximal portion (70) protrudes from the entry opening (72). A first distance to a first measuring point (34a) and a second distance to a second measuring point (34b) are determined. An orientation (74) of the hidden channel (66) is determined as a function of the first and the second distances.
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Citations
14 Claims
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1. A method for capturing three-dimensional data of an area of space, comprising:
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providing a laser scanner comprising a transmitter and a receiver, sending out a plurality of measuring beams (Ls) by means of the transmitter to a plurality of measuring points in the area of space, receiving a plurality of reflected beams (Lr) which are reflected by the measuring points, and determining a plurality of distances to the plurality of measuring points as a function of the reflected beams (Lr), determining for each measuring point of the plurality of measuring points a gray scale value that depends on an intensity of respective ones of the plurality of reflected beams (Lr), and recording a cloud of points, representative of the plurality of measuring points in the area of space, determined as a function of the plurality of distances and respective gray scale values, wherein the area of space comprises at least one object which contains a hidden channel having a visible entry opening, a rod-shaped element being inserted into the channel in such a manner that a free end proximal portion of the rod-shaped element protrudes from the entry opening, a first distance the rod-shaped element comprising a defined geometric shape having a first three-dimensional coordinate and at least one second three-dimensional coordinate in the area of space, an ideal image of the geometric shape being matched to the cloud of points that represents measuring points of the geometric shape, the first three-dimensional coordinate to a first measuring point at the free end proximal portion and at least one second distance the at least one second three-dimensional coordinate to a second measuring point at the free end proximal portion being determined using the ideal image that is matched to the cloud of points that represent measuring points of the geometric shape, and an orientation of the hidden channel being determined as a function of a vector between the first and second distance three-dimensional coordinates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. An apparatus structured to capture three-dimensional data of an area of space, comprising:
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a laser scanner having a transmitter and a receiver, the transmitter being configured for sending out a plurality of measuring beams (Ls) to a plurality of measuring points in the area of space, and the receiver being configured to receive a plurality of reflected beams (Lr) which are reflected by the measuring points and, to determine a plurality of distances to the plurality of measuring points as a function of the reflected beams (Lr), to determine for each measuring point of the plurality of measuring points a gray scale value that depends on an intensity of respective ones of the plurality of reflected beams (Lr), and to record a cloud of points, representative of the plurality of measuring points in the area of space, determined as a function of the plurality of distances and respective gray scale values, and a rod-shaped element comprising a defined geometric shape, wherein the receiver is also arranged configured for determining an orientation of a hidden channel at an object in the area of space, wherein a the rod-shaped element has a free end proximal portion which protrudes from an entry opening of the hidden channel, wherein the receiver is configured for;
matching an ideal image of the geometric shape to the cloud of points that represent measuring points of the geometric shape, the geometric shape having a first three-dimensional coordinate and at least one second three-dimensional coordinate in the area of space;
determining a first distancethe first three-dimensional coordinate to a first measuring point at the free endproximal portion and at least one second distancethe at least one second three-dimensional coordinate to a second measuring point at the free endproximal portion using the ideal image that is matched to the cloud of points that represent measuring points of the geometric shape; and
, determining the orientation of the hidden channel as a function of a vector between the first and second three-dimensional coordinates. - View Dependent Claims (14)
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Specification