Multi-Sample Anti-Aliasing and Constrained Optimization for 3D Gaussian Splatting
This work addresses the challenge of preserving fine-grained details in real-time 3D scene reconstruction for applications like computer graphics and VR, representing an incremental advancement over existing methods.
The paper tackles the problem of blurred reconstructions in 3D Gaussian splatting for novel view synthesis by integrating multisample anti-aliasing with dual geometric constraints, achieving state-of-the-art performance in detail preservation with improvements in SSIM and LPIPS metrics.
Recent advances in 3D Gaussian splatting have significantly improved real-time novel view synthesis, yet insufficient geometric constraints during scene optimization often result in blurred reconstructions of fine-grained details, particularly in regions with high-frequency textures and sharp discontinuities. To address this, we propose a comprehensive optimization framework integrating multisample anti-aliasing (MSAA) with dual geometric constraints. Our system computes pixel colors through adaptive blending of quadruple subsamples, effectively reducing aliasing artifacts in high-frequency components. The framework introduces two constraints: (a) an adaptive weighting strategy that prioritizes under-reconstructed regions through dynamic gradient analysis, and (b) gradient differential constraints enforcing geometric regularization at object boundaries. This targeted optimization enables the model to allocate computational resources preferentially to critical regions requiring refinement while maintaining global consistency. Extensive experimental evaluations across multiple benchmarks demonstrate that our method achieves state-of-the-art performance in detail preservation, particularly in preserving high-frequency textures and sharp discontinuities, while maintaining real-time rendering efficiency. Quantitative metrics and perceptual studies confirm statistically significant improvements over baseline approaches in both structural similarity (SSIM) and perceptual quality (LPIPS).