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Virtual work is a powerful method used to solve problems involving several connected rigid bodies. When the system is in equilibrium, virtual work is zero. This allows the calculation of the resulting forces when a system undergoes a virtual displacement. When attempting to analyze such a system, first, use a free-body diagram, where an independent coordinate represents the configuration of the links, and mark its deflected position resulting from the positive virtual displacement.
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GSDeformer: Direct, Real-Time and Extensible Cage-Based Deformation for 3D Gaussian Splatting.

Jiajun Huang, Shuolin Xu, Hongchuan Yu

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    |April 28, 2026
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    Summary
    This summary is machine-generated.

    GSDeformer enables real-time cage-based deformation for 3D Gaussian Splatting (3DGS) models. This method translates point cloud deformations into 3D Gaussian transformations without altering the core 3DGS architecture.

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    Area of Science:

    • Computer Graphics
    • Geometric Modeling

    Background:

    • 3D Gaussian Splatting (3DGS) has emerged as an efficient method for real-time rendering of 3D scenes.
    • Cage-based deformation is a common technique for manipulating 3D models, but its application to 3DGS has been limited.

    Purpose of the Study:

    • To introduce GSDeformer, a novel method for applying cage-based deformations to 3D Gaussian Splatting representations.
    • To enable intuitive and efficient editing of 3DGS scenes without requiring retraining.

    Main Methods:

    • Utilizes a proxy point-cloud representation derived from 3D Gaussians to facilitate deformation.
    • Deformations on the point cloud are mapped to transformations of the underlying 3D Gaussians.
    • Incorporates a splitting process to accurately handle bending deformations and automates cage construction via a render-and-reconstruct approach.

    Main Results:

    • GSDeformer achieves superior deformation results compared to existing methods.
    • The method demonstrates robustness under extreme deformations and operates in real-time.
    • Compatibility with vanilla 3DGS and its variants is maintained, requiring no retraining for editing.

    Conclusions:

    • GSDeformer provides an effective and efficient solution for cage-based deformation of 3D Gaussian Splatting.
    • The approach is versatile, real-time, and extensible to various 3DGS implementations, opening new possibilities for interactive 3D scene editing.