Radiance Field methods have recently revolutionized novel-view synthesis of
scenes captured with multiple photos or videos. However, achieving high visual
quality still requires neural networks that are costly to train and render,
while recent faster methods inevitably trade off speed for quality. For
unbounded and complete scenes (rather than isolated objects) and 1080p
resolution rendering, no current method can achieve real-time display rates. We
introduce three key elements that allow us to achieve state-of-the-art visual
quality while maintaining competitive training times and importantly allow
high-quality real-time (>= 30 fps) novel-view synthesis at 1080p resolution.
First, starting from sparse points produced during camera calibration, we
represent the scene with 3D Gaussians that preserve desirable properties of
continuous volumetric radiance fields for scene optimization while avoiding
unnecessary computation in empty space; Second, we perform interleaved
optimization/density control of the 3D Gaussians, notably optimizing
anisotropic covariance to achieve an accurate representation of the scene;
Third, we develop a fast visibility-aware rendering algorithm that supports
anisotropic splatting and both accelerates training and allows realtime
rendering. We demonstrate state-of-the-art visual quality and real-time
rendering on several established datasets.

我们提出了三个关键要素，可实现高质量的实时（大于等于 30 帧 / 秒）1080p 分辨率的新视图合成，其中包括使用 3D 高斯函数表示场景、优化 3D 高斯函数的相关参数以准确表示场景，并开发了一种快速的可见性感知渲染算法，以加速训练并实现实时渲染。