Gaussian Splatting to Mesh 3.0 with Huge Quality Bump

Back in 2024, we introduced the world’s first 3D Gaussian Splatting (3DGS) to Mesh algorithm. Last year, the 3DGS to Mesh 2.0 brought a massive leap in mesh quality. Today, we remain the only mobile scanning app offering this technology. But instead of waiting for the rest of the industry, we’re continuing to push what’s possible on a smartphone.

Welcome to KIRI Engine 4.2 with 3DGS to Mesh 3.0.

3DGS to Mesh 3.0 is the core upgrade in KIRI Engine 4.2, bringing significantly improved mesh quality and better structure retention.

3DGS to Mesh 3.0: A Stronger Baseline for Creators

The core of this update is a fundamental improvement in mesh quality.

Compared with the previous version, 3DGS to Mesh 3.0 produces smoother large surfaces, better overall structure, and cleaner thin details like the front stanchions.

To see how the new algorithm handled complex geometry, our co-founder Chris tested the 3.0 build on a human-sized Gundam exhibition right across from our office. In our previous version, the scan worked—the shape was captured and recognizable. But in 3.0, the leap in quality is immediately clear:

• The main body generates smoother surfaces, with noticeably less wobble on flat planes.

• More importantly, look at the thin stanchions around the figure. Normally, details this thin fall apart in video-based scans, turning into noise or disappearing entirely. In 3.0, they actually hold their structure.

Here are a few more examples of what changed in 3DGS-to-Mesh 3.0.

Across different scenes, the main improvements show up in cleaner large surfaces, better structure retention, and less broken geometry overall.

The whole room comes through much cleaner here.

Furniture holds its shape better, and the floor, walls, and curtains show less distortion.

Compared with the previous version, 3DGS to Mesh 3.0 keeps the room much cleaner overall, with better furniture stability and less distortion across the floor, walls, and curtains.

The difference is especially clear in overall stability.

The chair, lamp, and side table stay much more readable, and the surrounding surfaces break down far less.

3DGS to Mesh 3.0 keeps the chair, lamp, and side table much more stable, with less collapse in the surrounding scene geometry.

This is a good example of small-scale geometry making significant improvements.

The object on top keeps its form better, and the stool looks much cleaner overall.

3DGS to Mesh 3.0 preserves the small top object more clearly while also producing a cleaner, more stable stool overall.

The elephant keeps much more of its detail in the new result.

Its overall shape is cleaner, and the carved surface reads far better.

The elephant keeps much more of its detail in 3DGS to Mesh 3.0, with a cleaner overall shape and far more readable carved surface patterns.

This scene shows a big improvement in hard-surface stability.

The cabinet reads much cleaner, with better edges, better structure, and less surrounding mess.

This scene shows a clear improvement in hard-surface stability, with cleaner cabinet edges, better overall structure, and much less surrounding distortion.

If you work in 3D, you know that no raw scan is a 100% flawless final asset. However, 3DGS to Mesh 3.0 crosses a practical threshold. It provides a solid, much cleaner baseline that you can bring straight into Blender—or your preferred 3D software—making the inevitable cleanup phase much more manageable.

To back up the quality improvements, we’ve also optimized the backend. Processing for the new 3DGS to Mesh is now 20% faster.

Solving the Slicer Headache: Measuring & Scaling

We spend a lot of time listening to our 3D printing community, and one of the most persistent workflow frictions is scale.

KIRI Engine 4.2 adds a new in-app Measuring tool, giving users a faster way to check distances and prepare models for rescaling before export.

You capture a great scan, export it, and open it in your slicer—only to find the dimensions are entirely off. Before you can even prep it for printing, you have to use a third-party tool to guess or manually adjust the scale. It breaks the workflow.

In KIRI Engine 4.2, we’re addressing this friction with the new Measuring and Scaling tool.

Here is how it works:

1. Measure: After your scan is done, tap the Measure option and pick any two points on your model to get an AI-estimated distance.

In the Measure step, users can pick any two points on the scan to get an AI-estimated distance before rescaling.

2. Rescale: Because that initial measurement is an AI estimation, it won’t be perfectly accurate. But here is the fix: tap Rescale, manually enter the exact real-world measurement between those two points, and the model snaps to the correct size.

In the Rescale step, users can enter the real-world measurement between two selected points and snap the model to the correct size before export.

3. Export: Send it directly to your slicer. Done.

Is it a fully automated process yet? Not quite. But it already eliminates a massive amount of back-and-forth time, and we’re working on making this completely seamless in future updates.

KIRI Engine 4.2 is rolling out now. We build these features because we know firsthand how much these workflow details matter. Grab the update, drop your 3.0 meshes into your pipeline, test the scaling tool, and tell us how it feels.

Learn More & Join the Community

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