Two blurry photos are now enough for a 3D scene

Wenyu Li and colleagues at NUDT diagnosed a structural flaw in query-based feed-forward gaussian splatting — the queries have no idea where they are — and fixed it by giving each one an explicit position in 3D space.

Why it matters: Feed-forward splatting is the branch that skips per-scene optimization: images in, gaussians out, no training run per capture. It is the path to splats that appear as fast as you can photograph something.

Kiseok Choi, Min H. Kim and colleagues have adapted gaussian splatting into a reconstruction method for cone-beam CT, correcting the streaks and dark bands that metal implants throw across a scan by modeling the polychromatic X-ray beam that causes them.

Why it matters: Splatting was built to render what a camera saw. This is the same representation running in reverse, as a solver for a physical inverse problem in a medium that has nothing to do with photography.

A team led by Siddarth Gottumukkula and Priyesh Shukla has proposed ProbSplat, a compute-in-memory chip architecture that stores gaussians as physical charge and evaluates their log-likelihoods in analog — targeting the power budget of standalone AR/VR headsets and edge robots rather than a desktop GPU.

Why it matters: Every splat pipeline shipping today assumes a GPU somewhere — on the device, or in the cloud with a round trip. That assumption is what keeps live reconstruction off untethered headsets and small robots.

Splatlight, a new Blender add-on from developer Javier Herrera, makes imported gaussian splats respond to scene lights and cast self-shadows — ending the era of splats that carry their capture lighting baked in and ignore every lamp around them.

Why it matters: Splats have been photorealistic but frozen: the lighting from the moment of capture is welded into the data. Making them behave under DCC lights is the ecosystem's current frontier — SideFX shipped Houdini relighting nodes just days ago, and Herrera credits Houdini's self-shadowing as the prompt for building this.

Esri has released ArcGIS Maps SDK for Unreal Engine 2.4.0 with a new gaussian splat layer type, letting developers stream georeferenced splat datasets from ArcGIS Online or ArcGIS Enterprise directly into Unreal scenes.

Why it matters: This completes Esri's splat rollout across its stack: ArcGIS Pro 3.6 introduced the layer, the JavaScript SDK 5.0 took it to the browser, ArcGIS Enterprise 12.1 brought it on-premises — and now it lands in the engine that runs simulations, digital twins and serious games.