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The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences
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Publications Copernicus
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Articles | Volume XLVIII-2/W4-2024
https://doi.org/10.5194/isprs-archives-XLVIII-2-W4-2024-349-2024
https://doi.org/10.5194/isprs-archives-XLVIII-2-W4-2024-349-2024
14 Feb 2024
 | 14 Feb 2024

BUILT-IN LENS CORRECTION PROFILES IN LOW-COST CAMERAS: AN ISSUE FOR PHOTOGRAMMETRIC APPLICATIONS?

L. Perfetti, F. Fassi, and G. P. M. Vassena

Keywords: Built-In Correction Profile, Low-cost cameras, Distortion, Camera calibration, UAV, Dewarp, Opcode

Abstract. Photogrammetric applications nowadays envisage the use of more and more low-cost cameras such as those equipped on commercial UAV platforms. Typically, these low-grade cameras suffer from extreme radial distortion and strong vignetting among other defects. This, initiated a trend among the low-cost cameras’ manufacturers to try to hide the camera defects by applying software pre-corrections to the images. These Built-In Correction Profiles gets applied to both the JPG files, directly in-camera, and usually to the raw files as well, through the opcode functions of the DNG standard. In this paper we rise this issue that is still under-reported in the literature and further assess the accuracy implication of applying or discarding the Built-In Correction Profile in the scenario of UAV mapping. We tested the commercial UAV DJI Phantom 4 Pro v2 in a calibration environment and a field test to compare the performance of pre-corrected versus uncorrected images. In our tests, processing the original uncorrected images led to improved IO calibration and reduced bowing effect in the field test.