融合二维关键点检测与三维结构光的多模态鱼类表型可塑性分类方法

By integrating two-dimensional keypoint detection with three-dimensional structured light, a multimodal fish phenotypic plasticity classification method was developed, which solved the problem that traditional two-dimensional vision methods are difficult to accurately capture the three-dimensional geometric details of fish bodies. This enabled accurate identification of the origin of large yellow croaker and improved the efficiency of market supervision and resource protection.

CN122023951BActive Publication Date: 2026-07-17EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
EAST CHINA SEA FISHERIES RES INST CHINESE ACAD OF FISHERY SCI
Filing Date
2026-04-13
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

Traditional two-dimensional vision methods are unable to accurately capture the three-dimensional geometric details of fish, making it difficult to accurately distinguish between sea-caught and farmed large yellow croaker, thus limiting technological breakthroughs in market supervision and wildlife resource protection.

Method used

A multimodal fish phenotypic plasticity classification method integrating 2D keypoint detection and 3D structured light is proposed. By constructing a multimodal classification model, high-precision structured light 3D reconstruction technology is used to obtain the geometric information of the fish surface, and key discriminant features with statistical significance are selected to construct a logistic regression discriminant formula suitable for rapid on-site identification.

Benefits of technology

The model has achieved accurate identification of the origin of large yellow croaker, with an accuracy rate of 97.14%, providing technical support for the intelligent identification and management of aquatic resources and improving the efficiency of market supervision and resource protection.

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Abstract

本发明公开了一种融合二维关键点检测与三维结构光的多模态鱼类表型可塑性分类方法,构建了大黄鱼二维、三维点云数据集,设计了特征工程流程,选取了关键点检测与几何特征提取算法,为后续建模奠定基础,通过系统性实验对比多种机器学习模型的性能,筛选出具有统计显著性的关键判别特征,推导出适用于现场快速鉴别的简化公式,根据实验结果,深入探讨鱼体曲率作为表型可塑性敏感指标的生物学内涵,分析多模态特征融合对精度的提升作用,并阐释成果在资源保护与产业优化中的应用价值。本发明实现了从微观曲率特征到宏观产业应用的贯通,首次针对研究海捕与养殖大黄鱼的鱼表可塑性差异进行研究,提取了具有高判别力的关键形态区分特征。
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