Rapid Three-Dimensional Reconstruction of Underwater Defective Pile Based on Two-Dimensional Images Obtained Using Mechanically Scanned Imaging Sonar
Auteur(s): |
Sheng Shen
Yamian Zeng Changqin Lai Shaofei Jiang Shaofen Wu Shenglan Ma |
---|---|
Médium: | article de revue |
Langue(s): | anglais |
Publié dans: | Structural Control and Health Monitoring, février 2023, v. 2023 |
Page(s): | 1-26 |
DOI: | 10.1155/2023/3647434 |
Abstrait: |
Three-dimensional (3-D) reconstruction based on sonar imaging is an intuitive and comprehensible form for describing an underwater defective pile. Most existing 3-D reconstruction methods are inefficient as they require the extraction of numerous feature points from many sonar images. A rapid 3-D reconstruction method for underwater defective piles based on two-dimensional (2-D) images obtained using mechanically scanned imaging sonar (MSIS) is proposed herein. First, the correspondences between the geometric features of MSIS images and actual defects are established based on the mapping relationship between actual object and MSIS image. Subsequently, no more than three feature points are extracted from 2-D MSIS images to recognize the contour segments. The contour segments are assembled into the entire cross section and then into the entire defective pile. The applicability of the proposed method is verified via a 3-D reconstruction for a scaled-down pile with multiple defect distributions. |
- Informations
sur cette fiche - Reference-ID
10725424 - Publié(e) le:
30.05.2023 - Modifié(e) le:
30.05.2023