Single-lens, single-sensor 3-D imaging device with a central aperture for obtaining camera position
First Claim
1. A device for three-dimensional (3-D) imaging comprising:
- a planar aperture mask having a central aperture on an optical axis and a defocusing aperture located off of the optical axis;
a first optical filter for the central aperture and a second optical filter for the defocusing aperture, wherein the first and second optical filters are colored such that a background image produced by the central aperture is distinguishable from a defocused image produced by the defocusing aperture;
a single sensor operable with the aperture mask to simultaneously capture the background image and the defocused image from an object; and
a processor communicatively coupled with the sensor for processing sensor information and producing a 3-D image of the object.
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Abstract
A device and method for three-dimensional (3-D) imaging using a defocusing technique is disclosed. The device comprises a lens, a central aperture located along an optical axis for projecting an entire image of a target object, at least one defocusing aperture located off of the optical axis, a sensor operable for capturing electromagnetic radiation transmitted from an object through the lens and the central aperture and the at least one defocusing aperture, and a processor communicatively connected with the sensor for processing the sensor information and producing a 3-D image of the object. Different optical filters can be used for the central aperture and the defocusing apertures respectively, whereby a background image produced by the central aperture can be easily distinguished from defocused images produced by the defocusing apertures.
139 Citations
15 Claims
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1. A device for three-dimensional (3-D) imaging comprising:
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a planar aperture mask having a central aperture on an optical axis and a defocusing aperture located off of the optical axis; a first optical filter for the central aperture and a second optical filter for the defocusing aperture, wherein the first and second optical filters are colored such that a background image produced by the central aperture is distinguishable from a defocused image produced by the defocusing aperture; a single sensor operable with the aperture mask to simultaneously capture the background image and the defocused image from an object; and a processor communicatively coupled with the sensor for processing sensor information and producing a 3-D image of the object. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method for three-dimensional (3-D) imaging comprising:
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capturing, simultaneously with a single sensor of an imaging device, electromagnetic radiation, transmitted off of an object and through each of a central aperture and a defocusing aperture located off of an optical axis, each aperture being in a planar aperture mask, wherein the electromagnetic radiation passing through the central aperture also passes through a first optical filter and wherein electromagnetic radiation passing through the defocusing aperture also passes through a second optical filter, the filters being colored such that a captured background image produced by the central aperture is distinguishable from a captured defocused image produced by the defocusing aperture; and processing information from the sensor to produce a 3-D image representative of the object. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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Specification