GauStudio is a modular framework designed for 3D Gaussian Splatting (3DGS), a technique that represents scenes using anisotropic 3D Gaussian kernels. The framework allows users to customize and integrate various components, such as foreground and background models, to create tailored pipelines for different tasks like scene reconstruction, editing, and simulation. Key features include: 1. **Hybrid Gaussian Representation**: GauStudio introduces a hybrid representation that combines foreground and skyball background models, reducing artifacts in unbounded outdoor scenes and improving novel view synthesis. 2. **Gaussian Splatting Surface Reconstruction (GauS)**: A novel approach for high-fidelity mesh reconstruction from 3DGS inputs without fine-tuning, enhancing the quality of surface reconstruction. 3. **Modular Design**: The framework is highly modular, allowing flexible combination and replacement of components, facilitating rapid innovation and customization. 4. **Comprehensive Stages**: The framework includes stages for scene initialization, optimization, enhancement, and compression, each fully customizable. 5. **Efficient Mesh Extraction**: GauS provides a versatile and efficient method for converting optimized 3D Gaussians into textured meshes, supporting various 3DGS-based methods. 6. **Gaussian Sky Modeling**: A method for modeling the sky separately from the foreground, reducing cloud-like artifacts and improving the realism of novel view synthesis in outdoor scenes. Experiments demonstrate the effectiveness of GauStudio in reducing artifacts, improving mesh quality, and enhancing the overall realism of novel view synthesis. The framework is designed to drive advancements in 3D scene modeling through its modular design and versatility.GauStudio is a modular framework designed for 3D Gaussian Splatting (3DGS), a technique that represents scenes using anisotropic 3D Gaussian kernels. The framework allows users to customize and integrate various components, such as foreground and background models, to create tailored pipelines for different tasks like scene reconstruction, editing, and simulation. Key features include: 1. **Hybrid Gaussian Representation**: GauStudio introduces a hybrid representation that combines foreground and skyball background models, reducing artifacts in unbounded outdoor scenes and improving novel view synthesis. 2. **Gaussian Splatting Surface Reconstruction (GauS)**: A novel approach for high-fidelity mesh reconstruction from 3DGS inputs without fine-tuning, enhancing the quality of surface reconstruction. 3. **Modular Design**: The framework is highly modular, allowing flexible combination and replacement of components, facilitating rapid innovation and customization. 4. **Comprehensive Stages**: The framework includes stages for scene initialization, optimization, enhancement, and compression, each fully customizable. 5. **Efficient Mesh Extraction**: GauS provides a versatile and efficient method for converting optimized 3D Gaussians into textured meshes, supporting various 3DGS-based methods. 6. **Gaussian Sky Modeling**: A method for modeling the sky separately from the foreground, reducing cloud-like artifacts and improving the realism of novel view synthesis in outdoor scenes. Experiments demonstrate the effectiveness of GauStudio in reducing artifacts, improving mesh quality, and enhancing the overall realism of novel view synthesis. The framework is designed to drive advancements in 3D scene modeling through its modular design and versatility.