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arXiv 2602.04838cs.CV
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LitS:一种新的点云邻域描述符

LitS: A novel Neighborhood Descriptor for Point Clouds

Centro Singular de Investigación en Tecnoloxías Intelixentes (CiTIUS), Universidade de Santiago de Compostela, Spain(圣地亚哥-德孔波斯特拉大学智能技术研究中心(CiTIUS));Universidade de Santiago de Compostela, Spain(圣地亚哥-德孔波斯特拉大学);Departamento de Electrónica e Computación, Universidade de Santiago de Compostela, Spain(圣地亚哥-德孔波斯特拉大学电子与计算系)

Jonatan B. Bastos, Francisco F. Rivera, Oscar G. Lorenzo, David L. Vilariño, José C. Cabaleiro, Alberto M. Esmorís, Tomás F. Pena

AI总结:

LitS是一种新型点云邻域描述符,通过分段常数函数捕捉局部点排列的细微差别,适用于2D和3D点云分析,具备适应不同数据类型和密度的能力。

摘要:

随着3D扫描技术的进步,点云已成为表示3D空间数据的基本形式,其应用范围涵盖各个科学和技术领域。对这种数据的实际分析严重依赖于可用的邻域描述符,以准确表征点云的局部几何结构。本文介绍了LitS,一种新的用于2D和3D点云的邻域描述符。LitS是在单位圆上定义的分段常数函数,允许点跟踪其周围环境。LitS域中的每个元素代表相对于局部参考系的方向。一旦构建完成,评估LitS在任何给定方向上都会提供关于锥形区域中心方向周围邻居数量的信息。因此,LitS传达了关于点的局部邻域的大量信息,可以通过分析LitS在邻近点之间如何变化来获得全局结构理解。此外,LitS有两种版本(

英文摘要:

With the advancement of 3D scanning technologies, point clouds have become fundamental for representing 3D spatial data, with applications that span across various scientific and technological fields. Practical analysis of this data depends crucially on available neighborhood descriptors to accurately characterize the local geometries of the point cloud. This paper introduces LitS, a novel neighborhood descriptor for 2D and 3D point clouds. LitS are piecewise constant functions on the unit circle that allow points to keep track of their surroundings. Each element in LitS' domain represents a direction with respect to a local reference system. Once constructed, evaluating LitS at any given direction gives us information about the number of neighbors in a cone-like region centered around that same direction. Thus, LitS conveys a lot of information about the local neighborhood of a point, which can be leveraged to gain global structural understanding by analyzing how LitS changes between close points. In addition, LitS comes in two versions ('regular' and 'cumulative') and has two parameters, allowing them to adapt to various contexts and types of point clouds. Overall, they are a versatile neighborhood descriptor, capable of capturing the nuances of local point arrangements and resilient to common point cloud data issues such as variable density and noise.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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