Assessing Noise Impact on DeepOrientation - A Convolutional Neural Network for Local Fringe Orientation Map Estimation
Authors: Cywińska Maria , Forjasz Wiktor , Patorski Krzysztof , Trusiak Maciej 
Published: December 2024

This paper discusses noise robustness of DeepOrientation, a convolutional neural network developed for fast and accurate local fringe orientation map estimation, enhancing full-field optical measurement techniques such as interferometry and holographic microscopy. The use of neural networks to determine the final result of the optical measurement may raise legitimate metrological concerns and therefore we still recommend the use of fully mathematically sound solutions for both fringe pattern prefiltration and phase retrieval. DeepOrientation does not replace mathematically rigorous algorithms but supports them providing fringe orientation map vital for 2D Hilbert transform phase demodulation, requiring prefiltered fringe data for optimal performance. We analyze DeepOrientation sensitivity to prefiltration noise-related accuracy using simulated data and validate results with experimentally recorded fringe patterns. Full Text: PDF References

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