Dynamic 3DGS complexity
This contribution from InterDigital addresses an open editor's note in TR 26.958 regarding scene complexity impacts on Dynamic 3D Gaussian Splatting (3DGS) feasibility for mobile platforms. The document proposes text for Clause 6.3 (Complexity) which is currently empty.
The contribution identifies that dynamic scene complexity significantly affects the feasibility of dynamic 3DGS content on mobile devices. Key complexity drivers include:
These parameters directly constrain:
- Achievable frame rate
- Session duration
- Visual quality
FFS: Determining maximum scene complexity that representative UE categories can sustain.
The document highlights that highly dynamic content (multi-person scenes, self-occlusions, cloth/hair motion) presents specific compression challenges:
The contribution proposes categorizing dynamic 3DGS representations based on temporal association of Gaussian primitives:
These categories differ in:
- Efficiency for temporal prediction
- Robustness to motion/topology changes
FFS: Comparison of these formats regarding bitrate efficiency, latency, UE processing, and visual quality.
The document notes that the original INRIA 3DGS representation has inherent limitations for dynamic content:
Recent academic developments (references [1]-[4]) explore alternatives addressing these limitations.
FFS: Whether multiple dynamic-oriented 3DGS formats may coexist.
The contribution proposes adding the provided text to Section 6.3.X or another suitable section of TR 26.958 to address the open editor's note on complexity considerations for Dynamic 3DGS content.