GSCV++: Lightweight 3D Gaussian Splatting Sequence Compression via Standard Video Codecs

TL;DR

GSCV++ introduces a lightweight pipeline for compressing 3D Gaussian splatting sequences using standard video codecs, achieving significant rate-distortion improvements through energy-adaptive SH dimensionality reduction, prior-based 2D feature mapping, and content-aware compression. It enables faster encoding/decoding with minimal complexity, making it suitable for real-time applications.

Why It Matters

By leveraging existing video codecs without normative changes, GSCV++ offers a practical, hardware-compatible solution for 3D content compression, crucial for AR/VR, robotics, and streaming where low latency and efficiency are essential.

Key Findings

• EA-SHDR reduces temporal SH AC feature volume with minimal complexity and redundancy.
• P-MiniPLAS generates smoother 2D maps than PLAS or Morton scan, improving codec efficiency.
• CA-GC enables non-uniform bit-depth splitting and adaptive CU sizing, boosting compression performance.