Borehole television probe eccentricity-based borehole wall image correction method and system
By calculating the eccentricity parameters and spatial mapping of the borehole television probe, the borehole wall image is corrected, solving the geometric distortion problem caused by the eccentricity of the borehole television probe and realizing high-precision borehole wall image correction and geological parameter interpretation.
CN122415399APending Publication Date: 2026-07-17ANHUI SURVEY & DESIGN INST OF WATER CONSERVANCY & HYDROPOWER
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI SURVEY & DESIGN INST OF WATER CONSERVANCY & HYDROPOWER
- Filing Date
- 2026-05-18
- Publication Date
- 2026-07-17
AI Technical Summary
Technical Problem
Borehole television probes are prone to eccentricity inside the borehole, leading to geometric distortion of the borehole wall images and affecting the reliability and accuracy of geological parameter interpretation.
Method used
By acquiring probe attitude data and distance values, calculating eccentricity parameters, establishing spatial mapping relationships, performing pixel coordinate remapping, correcting the borehole wall image, reconstructing the true three-dimensional coordinates, and eliminating geometric distortion.
Benefits of technology
This technology has improved the reliability of borehole television probe detection and the high-precision correction of geological parameters, thereby enhancing the realism of images and the accuracy of geological parameters.
✦ Generated by Eureka AI based on patent content.
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Figure CN122415399A_ABST
Abstract
本发明提供一种基于钻孔电视探头偏心检测的孔壁图像校正方法及系统，涉及工程勘察技术领域，包括以下步骤：获取当前测点深度处的探头姿态数据，探头距离孔壁的距离值及孔壁图像数据，并基于多个方向所测距离值之间的关系计算探头相对于钻孔截面中心的偏心参数；基于所获取的航向角将所计算所得偏心方位角转换为地理坐标系下的绝对偏心方位角，本发明规避了因探头偏心导致的二维图像几何畸变，从而消解了传统方法的系统误差源，解决了目前因钻孔电视探头偏心，导致采集的孔壁图像出现几何畸变，影响所测地质参数可靠性的问题，实现钻孔电视探头检测的可靠性，以及产状物理的高精度校正。
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