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In-situ measurement method for large-scale underwater equipment based on dehazing imaging technology
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In-situ measurement method for large-scale underwater equipment based on dehazing imaging technology
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Journal Article
In-situ measurement method for large-scale underwater equipment based on dehazing imaging technology
2025
Overview
In-situ measurement for large-scale underwater equipment has been confronted with many challenges in measuring distance and accuracy. Existing methods can only detect small equipment with meter level dimensions. Inspired by indoor global positioning system (IGPS) measurement technology of large-scale equipment on land, we propose a underwater dehazing imaging three-dimensional measurement method based on digital micro-mirror device (DMD) sparse sensing to settle above issues. Specifically, polarization dehazing imaging involves modulating conjugated scattering field to eliminate background scattered light from water propagation. The multi frequency sonar locator builds underwater IGPS by obtaining the distances of spherical transmitters. The experiments demonstrate that the accuracy of combined measurement reaches 1mm with a measurement distance of 100 meters. This method is suitable for measuring the deformation of large underwater equipment such as dam gates, ships, and pipelines
Publisher
IOP Publishing
