Mapry Releases Accuracy Verification Results for 3D Measurement LiDAR 'mapry LA03-1', Records Highly Stable Accuracy of 0.08% Closing Ratio on Real-World Measurement Routes Exceeding 1000m

Mapry (Headquarters: Tanba City, Hyogo Prefecture; Representative Director: Keiji Yamaguchi; hereinafter "Mapry") has conducted and released the results of an accuracy verification regarding closing error and reproducibility for its 3D measurement LiDAR "mapry LA03-1."

In this verification, measurements were conducted on routes of approximately 300m, 500m, and 1,000m. A closing ratio of 0.01% was recorded on the 300m route, and an extremely stable result of 0.08% closing ratio was confirmed even on the long-distance 1,000m route. This confirms that, despite being a low-priced LiDAR unit at 397,000 JPY (excluding tax), it possesses a level of accuracy suitable for wide-ranging practical use in surveying and civil engineering sites.

### Background and Overview of Accuracy Verification

"mapry LA03-1" is a LiDAR scanner developed for the purpose of easy 3D data acquisition on-site. The aim of this verification was to objectively measure the accuracy of the SLAM (Simultaneous Localization and Mapping) algorithm alone and the reproducibility when applying "loop closure," an optimization process by software, for each distance.

Measurements started from a starting point in outdoor environments near the company building and in a forest, returning to the same position. Fixed objects (walls, facilities, etc.) were targeted, and the consistency of point clouds between the first pass and the return visit (closing error based on XYZ differences of targets) was measured to calculate the closing ratio.

### Accuracy Verification Results

For all measurement distances, it was confirmed that the point clouds matched with extremely high accuracy when loop closure processing was applied. Stable results were also obtained even with the standalone SLAM without correction.

**[Measurement Results for Each Route (Closing Error and Closing Ratio)]**

| Measurement Route | Loop Closure Processing | Closing Error | Closing Ratio | |---|---|---|---| | Approx. 300m | Yes | Approx. 0.02m to 0.04m | 0.01% to 0.02% | | Approx. 300m | No | Approx. 0.01m to 0.55m | 0.01% to 0.24% | | Approx. 500m | Yes | Approx. 0.12m | Approx. 0.02% | | Approx. 500m | No | Approx. 0.28m | Approx. 0.06% | | Approx. 1000m | Yes | Approx. 0.80m | Approx. 0.08% | | Approx. 1000m | No | Approx. 0.87m | Approx. 0.09% |

### Conclusion and Future Outlook

This verification has demonstrated that mapry LA03-1 not only boasts high stability with its standalone SLAM performance but also, when combined with loop closure processing, can suppress errors to less than 1 meter even in long-distance measurements up to 1000m, ensuring high reproducibility.

Especially at practical measurement distances around 300m, errors are kept to a few centimeters, clearly confirming its practicality for sites requiring accuracy, such as forest resource surveys and wide-area current status assessment in civil engineering (e.g., topographic surveys, basic data for earth volume calculation).

Receiving these results, which confirm that LA03-1 possesses sufficient accuracy for both small-scale sites and wide-area sites up to 1000m, for preliminary surveys and 3D modeling of current conditions in civil engineering as well as forest surveys, Mapry will continue to provide and develop solutions that enable anyone to easily acquire and utilize high-precision 3D data.

### Inquiries Regarding This Matter

For questions and applications regarding the product, please contact us via the link below.

Inquiry Contact: https://mapry.co.jp/contact/

### About Mapry

Mapry offers services for everyone involved in surveying, forestry, disaster prevention, agriculture, and construction. It provides solutions that simplify the acquisition, analysis, and utilization of 3D data, which previously had high barriers due to the burden of surveying equipment costs and difficulties in operating/analyzing the equipment.

### Company Overview

Company Name: Mapry Inc.

Location: 165 Tada, Kasuga-cho, Tanba City, Hyogo Prefecture (Headquarters)

Representative: Keiji Yamaguchi, Representative Director

HP: https://mapry.co.jp/

Inquiry regarding this matter: [email protected]