Method and apparatus for improved vision detector image capture and analysis
First Claim
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1. A method for detecting and inspecting an object, comprising:
- capturing a sequence of frames, each frame in the sequence of frames comprising an image of a field of view, the sequence of frames comprising a first plurality of frames for which the object is not present in the field of view and a second plurality of frames for which the object is present in the field of view; and
analyzing each frame in the sequence of frames to detect and inspect the object, wherein the analysis is responsive to the first plurality of frames and the second plurality of frames, and wherein capture and analysis of frames are substantially asynchronous.
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Abstract
Disclosed are methods and apparatus for improvements to image capture and analysis for vision detectors. The improvements provide for asynchronous capture and analysis and allow high frame rates to be maintained when image analysis may under certain conditions comprise a significantly longer time interval than image capture. The improvements prevent memory buffer overflow and provide for short and predictable decision delays even though an arbitrary and potentially unlimited number of images are captured and analyzed for each object.
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Citations
20 Claims
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1. A method for detecting and inspecting an object, comprising:
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capturing a sequence of frames, each frame in the sequence of frames comprising an image of a field of view, the sequence of frames comprising a first plurality of frames for which the object is not present in the field of view and a second plurality of frames for which the object is present in the field of view; and
analyzing each frame in the sequence of frames to detect and inspect the object, wherein the analysis is responsive to the first plurality of frames and the second plurality of frames, and wherein capture and analysis of frames are substantially asynchronous. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for detecting and inspecting an object, comprising:
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a capture process that captures a sequence of frames, each frame in the sequence of frames comprising an image of a field of view, the sequence of frames comprising a first plurality of frames for which the object is not present in the field of view and a second plurality of frames for which the object is present in the field of view; and
an analysis process that analyzes each frame in the sequence of frames to detect and inspect the object, wherein the analysis is responsive to the first plurality of frames and the second plurality of frames, and wherein the capture process and the analysis process are substantially asynchronous. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification