GDGS: 3D Gaussian Splatting Via Geometry-Guided Initialization And Dynamic Density Control
This work addresses initialization and optimization bottlenecks for 3DGS, an incremental improvement for real-time 3D rendering in computer graphics.
The paper tackles challenges in 3D Gaussian Splatting (3DGS) by proposing a geometry-guided initialization, surface-aligned optimization, and dynamic density control to enhance rendering quality and convergence. It achieves high-fidelity real-time rendering with comparable or superior results to state-of-the-art methods.
We propose a method to enhance 3D Gaussian Splatting (3DGS)~\cite{Kerbl2023}, addressing challenges in initialization, optimization, and density control. Gaussian Splatting is an alternative for rendering realistic images while supporting real-time performance, and it has gained popularity due to its explicit 3D Gaussian representation. However, 3DGS heavily depends on accurate initialization and faces difficulties in optimizing unstructured Gaussian distributions into ordered surfaces, with limited adaptive density control mechanism proposed so far. Our first key contribution is a geometry-guided initialization to predict Gaussian parameters, ensuring precise placement and faster convergence. We then introduce a surface-aligned optimization strategy to refine Gaussian placement, improving geometric accuracy and aligning with the surface normals of the scene. Finally, we present a dynamic adaptive density control mechanism that adjusts Gaussian density based on regional complexity, for visual fidelity. These innovations enable our method to achieve high-fidelity real-time rendering and significant improvements in visual quality, even in complex scenes. Our method demonstrates comparable or superior results to state-of-the-art methods, rendering high-fidelity images in real time.