Geomatics and Environmental Engineering, vol. 19, no. 4

Issue

Vol. 19 No. 4 (2025): Geomatics and Environmental Engineering

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Submitted
Sep 25, 2024
Accepted
Jun 2, 2025
Published
Jul 30, 2025
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This work is licensed under a Creative Commons Attribution 4.0 International License.

PyLiGram – Research Application for LiDAR Data Processing Based on Photogrammetric Methods

https://doi.org/10.7494/geom.2025.19.4.5
Antoni Rzonca
AGH University of Krakow, Faculty of Geo-Data Science, Geodesy, and Environmental Engineering, Department of Photogrammetry, Remote Sensing, and Spatial Engineering, Krakow, Poland
https://orcid.org/0000-0003-0333-1000
Mariusz Twardowski
AGH University of Krakow, Faculty of Geo-Data Science, Geodesy, and Environmental Engineering,Department of Photogrammetry, Remote Sensing, and Spatial Engineering, Krakow, Poland
https://orcid.org/0000-0001-7107-6190

Corresponding Author(s) : Antoni Rzonca

arz@agh.edu.pl

Geomatics and Environmental Engineering, Vol. 19 No. 4 (2025): Geomatics and Environmental Engineering

Abstract

This paper presents the functionality and research possibilities of an application that is based on two concepts: the use of photogrammetric analysis for LiDAR data processing (lidargrammetry), and the assignments of identifiers to cloud points in order to be able to return to the original points after processing without data loss and redundant processing.
The research tool has, thus far, been developed for the implementation of two distinct LiDAR data-enhancement processes. The initial approach involves the altimetric transformation of the LiDAR data (a process that is founded on the principles of stereo model deformation theory), and the second process employs lidargrammetry for the purpose of 3D local point-cloud corrections, global changes, or non-rigid transformation. This is achieved by applying blocks of lidargrams and their subsequent matching and adjustments.

Keywords

LiDAR processing data integration lidargrammetry data enhancement
Rzonca, A., & Twardowski, M. (2025). PyLiGram – Research Application for LiDAR Data Processing Based on Photogrammetric Methods. Geomatics and Environmental Engineering, 19(4), 5–37. https://doi.org/10.7494/geom.2025.19.4.5
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