A Bi-Radial Model for Lens Distortion Correction of Low-Cost UAV Cameras

Research output: Contribution to journalResearch articleContributedpeer-review


Recently developed cameras in the low-cost sector exhibit lens distortion patterns that cannot be handled well with established models of radial lens distortion. This study presents an approach that divides the image sensor and distortion modeling into two concentric zones for the application of an extended radial lens distortion model. The mathematical model is explained in detail and it was validated on image data from a DJI Mavic Pro UAV camera. First, the special distortion pattern of the camera was examined by decomposing and analyzing the residuals. Then, a novel bi-radial model was introduced to describe the pattern. Eventually, the new model was integrated in a bundle adjustment software package. Practical tests revealed that the residuals of the bundle adjustment could be reduced by 63% with respect to the standard Brown model. On the basis of external reference measurements, an overall reduction in the residual errors of 40% was shown.


Original languageEnglish
Article number5283
Number of pages20
JournalRemote Sensing
Issue number22
Publication statusPublished - 8 Nov 2023

External IDs

ORCID /0000-0001-7662-8572/work/146642695
Scopus 85177891677
Mendeley d5912a19-e0c9-39f3-a2c1-782009fa598a


DFG Classification of Subject Areas according to Review Boards

Subject groups, research areas, subject areas according to Destatis


  • Camera calibration, geometric modeling, photogrammetry, bundle adjustment, interior orientation, bundle adjustment, camera calibration, geometric modeling, interior orientation, photogrammetry

Library keywords