Multi-Sample Anti-Aliasing and Constrained Optimization for 3D Gaussian Splatting

TL;DR

This paper introduces a novel optimization framework for 3D Gaussian splatting that combines multisample anti-aliasing with dual geometric constraints, significantly enhancing detail preservation and sharpness in real-time view synthesis.

Contribution

It proposes an integrated system that reduces aliasing artifacts and enforces geometric regularization, improving the quality of 3D reconstructions with high-frequency details.

Findings

Achieves state-of-the-art detail preservation in benchmarks.

Improves SSIM and LPIPS metrics over baseline methods.

Maintains real-time rendering efficiency.

Abstract

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).