Depth ranging with Moiré patterns
First Claim
Patent Images
1. A method for three-dimensional mapping of an object, comprising:
- projecting with a projector a set of fringes on the object;
capturing an image of the object in a camera, wherein the image contains a Moiré
pattern associated with the object, and a visibility of the Moiré
pattern varies with a distance of the object from the camera,wherein the visibility of the pattern in a region is defined as a relation between a maximum intensity in the region and a minimum intensity in the region; and
processing the captured image so as to detect the Moiré
pattern associated with the object and so as to extract depth information from the visibility of the Moiré
pattern.
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Abstract
A method for three-dimensional mapping of an object, including projecting with a projector a set of fringes on the object and capturing an image of the object in a camera. The method further includes processing the captured image so as to detect a Moiré pattern associated with the object and so as to extract depth information from the Moiré pattern, and configuring the projector and the camera so that a locally unambiguous characteristic of the Moiré pattern is related to a depth of the object.
158 Citations
34 Claims
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1. A method for three-dimensional mapping of an object, comprising:
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projecting with a projector a set of fringes on the object; capturing an image of the object in a camera, wherein the image contains a Moiré
pattern associated with the object, and a visibility of the Moiré
pattern varies with a distance of the object from the camera,wherein the visibility of the pattern in a region is defined as a relation between a maximum intensity in the region and a minimum intensity in the region; and processing the captured image so as to detect the Moiré
pattern associated with the object and so as to extract depth information from the visibility of the Moiré
pattern. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. Apparatus for three-dimensional mapping of an object, comprising:
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a projector which is configured to project a single set of fringes on the object; a camera which is configured to capture an image of the object, wherein the image contains a Moiré
pattern associated with the object, and a visibility of the Moiré
pattern varies with a distance of the object from the camera,wherein the visibility of the pattern in a region is defined as a relation between a maximum intensity in the region and a minimum intensity in the region; and a processor which is configured to process the captured image so as to detect the Moiré
pattern associated with the object and so as to extract depth information from the visibility of the Moiré
pattern. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. Apparatus for three-dimensional mapping of an object, comprising:
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a projector which is configured to project a first set of fringes and a second set of fringes on the object; a camera which is configured to capture an image of the object, wherein the image contains a Moiré
pattern associated with the object, and a visibility of the Moiré
pattern varies with a distance of the object from the camera,wherein the visibility of the pattern in a region is defined as a relation between a maximum intensity in the region and a minimum intensity in the region; and a processor which is configured to process the captured image so as to detect the Moiré
pattern associated with the object and so as to extract depth information from the visibility of the Moiré
pattern. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification