Optical Geometry Measurement Stochastic Image Averaging
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Solution Overview
Problem
Existing optical methods for determining the geometry of objects in robust environments, such as industrial settings with vibrations, face challenges in achieving precise measurements due to distortion caused by these vibrations, leading to inaccurate geometry determination.
Innovation Solution
The method involves using an optical measuring device with a lens or lenses to record multiple images of the object, followed by stochastic evaluation using an evaluation unit to generate a time-averaged overall image, which improves the accuracy of geometry determination by averaging out extreme values caused by vibrations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If multiple individual images are captured and evaluated separately, then the measurement process is simple, but the measurement precision deteriorates due to vibrations causing distortion in individual images
Solution Approach 1:
The patent merges multiple individual images into a single evaluation image by combining image information from multiple captures. This consolidation allows the system to average out vibration-induced distortions across multiple frames, thereby improving geometry determination accuracy without requiring complex individual image analysis for each frame.
Solution Approach 2:
The patent implements continuous image capture during the measurement process, acquiring multiple individual images in succession. This continuous capturing approach ensures that vibration distortions are randomly distributed across frames, allowing statistical averaging to eliminate their effect while maintaining measurement continuity and efficiency.
2Adaptability or versatility
If measurements are taken in robust environments with vibrations, then the adaptability of the measuring device is improved, but the measurement precision deteriorates due to uncontrollable relative movements
Solution Approach 1:
The patent converts the harmful effect of vibrations into a beneficial statistical phenomenon. By capturing multiple images during vibration, the system allows random vibration patterns to average out over time, transforming the harmful distortion into a self-canceling effect that reveals the true geometry when images are combined.
3Loss of information
If individual images are evaluated directly, then the evaluation time is short, but the loss of information occurs due to vibration-induced distortion in single frames
Solution Approach 1:
The patent performs preliminary image capture and combination before the final geometry evaluation. By pre-combining multiple individual images into a single evaluation image that has already averaged out vibration effects, the system preserves complete geometric information for the final analysis without requiring re-capturing or complex real-time processing.
Data Source
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AI summary
Known methods for determining the geometry of an object, especially in cases of uncontrollable relative motion, are only capable of inaccurate measurements. To improve accuracy, a method for determining the geometry of an object within a measurement zone using an optical measuring device is proposed. This method involves an uncontrollable relative motion between the optical measuring device and the object, and includes one or more lenses for capturing multiple images of the object, as well as an evaluation unit for evaluating the images. An evaluation image is generated by stochastically analyzing the information from individual images to accurately determine the geometry.