5 papers
OP2GS: Object-Aware 3D Gaussian Splatting with Dual-Opacity Primitives
Guiyu Liu, Niklas Vaara, Janne Mustaniemi +2
3D Gaussian Splatting (3DGS) provides an explicit and efficient scene representation, but its primitives lack inherent object-level identity, hindering downstream tasks such as ope…
Differentiable Ray Tracing with Gaussians for Unified Radio Propagation Simulation and View Synthesis
Niklas Vaara, Lam Huynh, Pekka Sangi +2
Explicit neural representations such as 3D Gaussian Splatting (3DGS) enable high-fidelity and real-time novel view synthesis, yet optimize for alpha-composited optical appearance r…
Differentiable High-Performance Ray Tracing-Based Simulation of Radio Propagation with Point Clouds
Niklas Vaara, Pekka Sangi, Miguel Bordallo López +1
Ray tracing is a widely used deterministic method for radio propagation simulations, capable of producing physically accurate multipath components. The accuracy depends on the qual…
Ray Launching-Based Computation of Exact Paths with Noisy Dense Point Clouds
Niklas Vaara, Pekka Sangi, Miguel Bordallo López +1
Point clouds have been a recent interest for ray tracing-based radio channel characterization, as sensors such as RGB-D cameras and laser scanners can be utilized to generate an ac…
A Ray Launching Approach for Computing Exact Paths with Point Clouds
Niklas Vaara, Pekka Sangi, Miguel Bordallo López +1
Ray tracing is a deterministic method that produces propagation paths between a transmitter and a receiver. The simulation accuracy is significantly influenced by the environment d…