Point cloud data reduction with tangent function method for nurbs curve and surface fitting

Chouychai, Bopit

doi:10.1109/kst.2015.7051473

Cited by 7 publications

(3 citation statements)

References 10 publications

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“…Moreover, the photos captured by the same device are used to create panoramas, project the colour to a single point of the cloud, and create a VT of the digital survey. The next strong point is the possibility of importing and managing point clouds within both BIM and NURBS modelers that have integrated the necessary applications into their interfaces [55,56]. The BIM or NURBS modelers themselves have integrated functions that allow representation in VR with simple applications and with increasingly appealing material libraries.…”

Section: Research Backgroundmentioning

confidence: 99%

Virtual Representations of Cultural Heritage: Sharable and Implementable Case Study to Be Enjoyed and Maintained by the Community

Bolognesi

Fiorillo

2023

Buildings

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This paper is related to the field of digital-informed modelling of heritage assets (HBIM). The scientific literature has been addressing this topic for years with many different facets: focusing digitalization on the analysis and modelling of heritage asset geometries, construction, development over time, or the representation of materials and degradations. This research aims not only to optimize the common digital workflows but also to demonstrate the effectiveness of digitalization and virtual reality applications in preserving the memory of places. Furthermore, a strategy for the maintenance of cultural heritage through virtual reality in a participatory process is proposed. The applied method develops appropriate new workflows and tools to enable enjoyment of monuments of the developed case study remotely; moreover, it allows the creation of content from ordinary users that can be incorporated into the digital models over time. Therefore, virtual and augmented reality environments are proving to be effective methods even for non-experts to understand space, allowing for active citizenship involvement.

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Section: Research Backgroundmentioning

confidence: 99%

Virtual Representations of Cultural Heritage: Sharable and Implementable Case Study to Be Enjoyed and Maintained by the Community

Bolognesi

Fiorillo

2023

Buildings

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“…J. Yang et al applicated NURBS in turbomachinery design and obtained satisfactory results, and the redesigned efficiency increased by 3% [24]. Subsequently, Bopit Chouychai et al proposed a tangent function method to find the turning point of curve function by the derivative of the function at a point, to improve the fitting speed of NURBS [25]. J. Apolinar Mu Muñoz Rodr Rodríguez et al and Xiaoqiang Tian et al used a genetic algorithm and BP neural network-based on particle swarm optimization to optimize the control point and knot sequence of the NURBS surface, respectively.…”

Section: Literature Reviewmentioning

confidence: 99%

A Reverse Modeling Method Based on CAD Model Prior and Surface Modeling

Fan

Wang

et al. 2022

Machines

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Reverse engineering is an important process of real model digitization. However, the existing methods are limited by the characteristics of the modeling object; the modeling is low efficient, has poor versatility, and unstable accuracy. To complete the reverse engineering of a real workpiece with irregular deformation based on the ideal computer-aided design (CAD) model, a high-precision reverse engineering method of the workpiece based on the CAD model prior was presented. Through the registration of the ideal CAD model and the point cloud model of the real workpiece, the geometric feature position information and feature constraint information contained in the CAD model are transmitted to the modeling process, which helps to improve the accuracy and efficiency of reverse engineering. This method is applied to the reverse engineering process of the engine compartment with slight irregular deformation, the modeling accuracy reaches 0.04 mm, and the high-precision reverse engineering of the engine compartment is successfully realized.

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“…Recently, various families of 3D Point Cloud Compression (PCC) methods have been proposed [ 8 , 9 , 10 , 11 , 12 , 13 ]. The first step is to set up a regular structure for point clouds to deal with the massive discrete points.…”

Section: Introductionmentioning

confidence: 99%

A Method Based on Curvature and Hierarchical Strategy for Dynamic Point Cloud Compression in Augmented and Virtual Reality System

Sun

Yan

et al. 2022

Sensors

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As a kind of information-intensive 3D representation, point cloud rapidly develops in immersive applications, which has also sparked new attention in point cloud compression. The most popular dynamic methods ignore the characteristics of point clouds and use an exhaustive neighborhood search, which seriously impacts the encoder’s runtime. Therefore, we propose an improved compression means for dynamic point cloud based on curvature estimation and hierarchical strategy to meet the demands in real-world scenarios. This method includes initial segmentation derived from the similarity between normals, curvature-based hierarchical refining process for iterating, and image generation and video compression technology based on de-redundancy without performance loss. The curvature-based hierarchical refining module divides the voxel point cloud into high-curvature points and low-curvature points and optimizes the initial clusters hierarchically. The experimental results show that our method achieved improved compression performance and faster runtime than traditional video-based dynamic point cloud compression.

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Point cloud data reduction with tangent function method for nurbs curve and surface fitting

Cited by 7 publications

References 10 publications

Virtual Representations of Cultural Heritage: Sharable and Implementable Case Study to Be Enjoyed and Maintained by the Community

Virtual Representations of Cultural Heritage: Sharable and Implementable Case Study to Be Enjoyed and Maintained by the Community

A Reverse Modeling Method Based on CAD Model Prior and Surface Modeling

A Method Based on Curvature and Hierarchical Strategy for Dynamic Point Cloud Compression in Augmented and Virtual Reality System

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