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Abstract

Summary

Borehole data visualization has become increasingly important within the industry as a extensive research topic. Typically, detectors are deployed in boreholes filled with gas or liquid in low-light conditions, resulting poor and blurry visual data.

In this paper, we present a novel approach to enhance and assess the quality of optical borehole tele-viewers through visual compensation techniques. Firstly, an illumination compensation algorithm is introduced that effectively compensates for the reduction in brightness inside the borehole. Secondly, an impurity filtering algorithm based on Gaussian Mixture-based Back/Foreground Segmentation (GMG) is implemented to eliminate moving impurities as foreground while maintaining the stable borehole background. A TELTA inpainting method is used to compensate the eliminated area by leveraging the surrounding background as ingredients.

Finally, we introduce a comprehensive quality assessment framework that incorporates various metrics to evaluate the distribution of brightness and clarity of test frames before and after the compensations.

Our proposed design has demonstrated effectiveness in mitigating challenges of interpreting visual data from borehole environments. Furthermore, the enhanced visibility details improve subsequent borehole modelling using techniques such as Visual Simultaneous Localization and Mapping (V-SLAM), offering more discernible graphical information, along with an increased number of key feature points extracted.

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/content/papers/10.3997/2214-4609.202472026
2024-05-13
2026-02-18
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References

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