ALTIMETER USING IMAGING CAPABILITY
First Claim
Patent Images
1. An altimeter comprising:
- a laser projector for projecting a pattern onto a surface;
a camera for viewing the projected pattern; and
an image processor operatively connected to the laser projector and camera for determining distance to the surface based on cross-correlation of the projected and imaged patterns.
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Abstract
An altimeter includes a laser projector for projecting a pattern onto a surface and a camera for viewing the projected pattern. An image processor is operatively connected to the laser projector and camera for determining distance to the surface based on cross-correlation of the projected and imaged patterns. The camera can be a short wave infrared (SWIR) camera. The projected pattern can be a pseudo-random, fixed pattern.
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Citations
14 Claims
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1. An altimeter comprising:
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a laser projector for projecting a pattern onto a surface; a camera for viewing the projected pattern; and an image processor operatively connected to the laser projector and camera for determining distance to the surface based on cross-correlation of the projected and imaged patterns. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for determining distance to a surface, the steps comprising:
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projecting a pattern onto a surface from a laser projector; viewing the projected pattern using a camera and storing an imaged pattern; and cross-correlating the imaged pattern with an expected pattern using an image processor operatively connected to the laser projector and camera. - View Dependent Claims (11, 12, 13, 14)
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Specification