THREE-DIMENSIONAL IMAGING DEVICE AND METHOD FOR CALIBRATING THREE-DIMENSIONAL IMAGING DEVICE
First Claim
1. A three-dimensional imaging device comprising:
- plural imaging devices, each includes an imaging element that converts incident light into electrical signals; and
a light emitting device that emits laser beams,wherein the laser beams from the light emitting device are configured to form a light emission point by plasma in a air in front of the imaging devices, andwherein a difference in positional relationship with regard to the plural imaging devices is calibrated based on the light emission point serving as a reference point.
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Abstract
A three-dimensional imaging device (10) comprises a plurality of imaging devices (11a and 11b), each equipped with imaging elements for converting incident light into electrical signals, and a light emitting device (14) for emitting a laser beam, in which a laser beam (B) from the light emitting device forms a light emission point (A) by plasma in space in front of the imaging device, and the difference in positional relationship with regard to the plurality of imaging devices is calibrated based on the emission point (A) as a base point. Consequently, calibration can be always performed at a required timing regardless of the conditions of an object, and can be performed while keeping a constant accuracy.
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Citations
9 Claims
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1. A three-dimensional imaging device comprising:
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plural imaging devices, each includes an imaging element that converts incident light into electrical signals; and a light emitting device that emits laser beams, wherein the laser beams from the light emitting device are configured to form a light emission point by plasma in a air in front of the imaging devices, and wherein a difference in positional relationship with regard to the plural imaging devices is calibrated based on the light emission point serving as a reference point. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for calibrating a three-dimensional imaging device including plural imaging devices, each having imaging element to convert incident light to electrical signals, comprising the steps of:
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emitting laser beams from a light emitting device to space in front of an imaging device; forming a light emission point by plasma in space in front of the imaging device by the laser beams; and calibrating difference in positional relationship with regard to the plural imaging devices based on the emission point as a reference point.
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Specification