Ship cabin three-dimensional modeling method and system based on bim and laser scanning cooperation

By employing segmented panoramic observation, anchor bar guidance, and attitude control, the problem of sparse point cloud data in narrow cabins by laser scanning equipment was solved, achieving high-precision 3D modeling of the cabin, avoiding virtual topology misjudgment and structural collisions, and improving the accuracy and reliability of modeling.

CN122115784APending Publication Date: 2026-05-29CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719 +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA STATE SHIPBUILDING CORP LTD RESEARCH INSTITUTE 719
Filing Date
2026-02-08
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

In existing technologies, laser scanning equipment struggles to acquire complete point cloud data when the interior of a ship's cabin is narrow, structurally obstructed, or the scanning angle is limited. This leads to sparse or fragmented point cloud data being misjudged as virtual topology, resulting in the generation of non-existent virtual topology bridges in the model, which affects model accuracy and engineering feasibility.

Method used

By extracting geometric edges through segmented panoramic observation to generate continuous density contours, deploying continuous anchors to extend along the density contours, setting prohibited surface patching ranges, adjusting the posture of the laser scanning equipment to perform alternating oblique-cut patching, and combining dynamic temporal reverse curtain control, sparse gap areas are repaired and virtual topology generation is avoided.

Benefits of technology

It improves the accuracy of boundary recognition during the modeling process, ensures that point cloud density completion does not exceed the boundary, avoids equipment installation offset and structural collision, and enhances the geometric realism and engineering applicability of the modeling results.

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Abstract

The application discloses a ship cabin three-dimensional modeling method and system based on BIM and laser scanning cooperation, and relates to the technical field of three-dimensional digital modeling, and comprises the following steps: S100, panoramic observation is carried out on the cabin interior of a ship, the geometric edges of the cabin point cloud sparse band are extracted, a continuous density contour is generated, and the contour is used as a baseline for space reconstruction; S200, continuous anchor strips are arranged at the positions of the geometric edges according to the density contour, the true boundary trend is formed by extending along the direction of the density contour, and the unified control of the extension direction of the bulkhead is realized. Through the anchor strip guidance, the forbidden supplement isolation, the attitude oblique cutting supplement and the dynamic curtain laying mechanism, the true boundary is accurately identified, the virtual topology misjudgment is avoided, the geometric precision and the semantic reliability of modeling are improved, and the risk of structure deviation and interference is avoided.
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