Smart Non-Uniformity Correction Using Positioning Sensors
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Solution Overview
Problem
Infrared imaging devices face disruptions and data loss during non-uniformity correction (NUC) updates, as existing methods require periodic updates with a reference object, which can freeze images and block the imager, disrupting active image capture.
Innovation Solution
Infrared cameras are equipped with positioning sensors to determine the likelihood of use based on orientation and movement data, allowing NUC term updates only when the device is not actively capturing images, thus minimizing disruption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If NUC terms are updated periodically using a reference object, then image accuracy is improved, but image capture is disrupted and data loss occurs
Solution Approach 1:
The system performs NUC term updates in advance during periods when the imager is not actively capturing images. By using positioning data to predict future imaging periods and updating NUC terms before these periods begin, the system ensures image accuracy is maintained without disrupting active image capture operations.
2Measurement precision
If NUC terms are updated during active image capture, then image accuracy is improved, but user experience deteriorates due to frozen images
Solution Approach 1:
The system continuously monitors positioning data to determine whether the imager is currently in use or likely to be used soon. This feedback mechanism allows the system to intelligently schedule NUC term updates only during appropriate times when image freezing would not disturb users, thereby maintaining both image accuracy and user experience.
3Measurement precision
If NUC terms are updated frequently, then image accuracy is improved, but system performance deteriorates due to processing overhead
Solution Approach 1:
Instead of continuous or overly frequent NUC term updates, the system implements periodic updates scheduled based on positioning data analysis. By determining optimal update intervals and timing based on predicted imaging periods, the system maintains image accuracy while minimizing processing overhead and avoiding unnecessary updates.
Data Source
AI summary
Various embodiments of the present disclosure may include an imaging device configured to determine appropriate conditions for updating non-uniformity correction (NUC) terms. In certain embodiments, the imaging device may determine when the imaging device is likely not in use and update NUC terms during the times when the imaging device is likely not in use. Data from various position sensors such as gyroscopes, accelerometers, global positioning system receivers, and/or other data may be used to determine when the imaging device is likely not in use. Such position sensors may be coupled to the imaging device and/or may be remote from the imaging device. In certain embodiments, while NUC terms are updated, imaging data obtained may be modified with historical data to provide usable data.