Method and apparatus for capturing an image of a moving object
First Claim
1. A laser scanner, comprising;
- a beam director for scanning a beam of light across a field-of-view,a light detector for detecting light from the beam scattered by the field-of-view, anda controller that modifies at least one parameter of said beam director responsive to the motion of objects in the field-of-view.
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Accused Products
Abstract
A scanned beam imager or laser scanner is operable to scan an object moving through its field-of-view. The system may include means for detecting direction and/or speed of the object. The velocity detection means may include sensors, an interface for receiving velocity information from other system elements, or image analysis that examines the skew, stretch, or compression in images. Responsive to object movement direction and speed, the scanned beam imager may alter its pixel capture rate and/or its scan rate to compensate. Alternatively or in combination, the imager may perform software-based image motion compensation. In some embodiments, the system may allow the image capture region to pace objects moving rapidly through its field-of-view.
85 Citations
40 Claims
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1. A laser scanner, comprising;
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a beam director for scanning a beam of light across a field-of-view, a light detector for detecting light from the beam scattered by the field-of-view, and a controller that modifies at least one parameter of said beam director responsive to the motion of objects in the field-of-view. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A scanned beam imager, comprising;
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a beam director for scanning a beam of light across a field-of-view, a light detector for detecting light from the beam scattered by the field-of-view, and a controller that modifies the phase of pixels captured by said light detector responsive to the motion of objects in the field-of-view. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28)
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29. A method for capturing an image from a moving object, comprising the steps of;
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receiving motion information about an object in a field-of-view, selecting at least one scanning parameter responsive to the received object motion information, scanning a beam of light across the field-of-view using the selected at least one scanning parameter, and detecting light scattered by the field-of-view. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification