Focal Length Lens Effect at Non-Metric Camera for Three-Dimensional Models Result
Abstract
Selections of non-metric cameras can be calculated properly starting from choosing the right camera sensor size and lens focal length to get better results. Differences in the choice of focal length in shooting can affect the resulting photo. The resulting photo may differ from how much of the object is captured and may suffer distortion due to different selections of the focal length. The purpose of this study is to show the magnitude of the effect of focal length variation in making a three-dimensional model based on the comparison of the results of the three-dimensional model visualization, the comparison of the results of geometric accuracy based on the independent checkpoint coordinate data, and the comparison of the distance results between retro targets. The results of this study indicate that a focal length of 70 mm has better results with the formation of the object completely resembling its original object compared to a focal length of 28 mm which is not good at forming a safety pillar on the bridge. The results of the RMSE value based on ICP coordinate data at a focal length of 70 mm are better with a value of 0.083 m compared to a focal length of 28 mm with a large value of 0.123 m. The results of the RMSE value based on the distance between retro targets at a focal length of 70 mm are better with a value of 0.003 m compared to a focal length of 28 mm with a large value of 0.004 m.
Downloads
References
Dharsito, W. (2015). Dasar Fotografi Digital 2: Komposisi dan Ketajaman. Jakarta: Elex Media Komputindo.
El-Din Fawzy, H. (2019). Study the accuracy of digital close range photogrammetry technique software as a measuring tool. Alexandria Engineering Journal, 58(1), 171–179. Faculty of Engineering, Alexandria University. Retrieved from https://doi.org/10.1016/j.aej.2018.04.004
Frastia, M. (2005). POSSIBILITIES OF USING INEXPENSIVE DIGITAL CAMERAS IN APPLICATIONS OF CLOSE-RANGE PHOTOGRAMMETRY. SLOVAK JOURNAL OF CIVIL ENGINEERNG, 2, 20–28.
Harintaka. (2012). Fotogrametri Non Topografi. Yogyakarta: Universitas Gadjah Mada.
Kim, J. (2004). 40 Teknik Fotografi Digital. Jakarta: Elex Media Komputindo.
Pal Singh, S., Jain, K., & Mandla, V. R. (2013). Virtual 3D Campus Modeling by Using Close Range Photogrammetry. American Journal of Civil Engineering and Architecture, 1(6), 200–205.
Remondino, F., & El-Hakim, S. (2006). Image-Based 3D Modelling: A Review. The Photogrammetric Record, 269–291.
Ruotsala, A. (2016). Digital Close-Range Photogrammetry – A Modern Method to Document Forensic Mass Graves Anni-Helena Ruotsala University of Helsinki Faculty of Arts Department of Philosophy , History , Culture and Art Studies Archaeology Master ’ s Thesis.
Shortis, M. R., & Seager, J. W. (2014). A PRACTICAL TARGET RECOGNITION SYSTEM FOR CLOSE RANGE PHOTOGRAMMETRY. Photogrammetric Record, 337–355.
Stamatopoulos, C., & Fraser, C. S. (2011). Calibration of long focal length cameras in close range photogrammetry. Photogrammetric Record, 26(135), 339–360.
Tjahjadi, M. (2017). Photogrammetric Area-Based Least Square Image Matching for Surface Reconstruction. Elektrika, 01(01), 22–26.
Tjahjadi, M. E., Sai, S. S., & Handoko, F. (2019). Assessing a 35mm Fixed-Lens Sony Alpha-5100 Intrinsic Parameters Prior to, During, and Post UAV Flight Mission. KnE Engineering, 2019, 372–383.
Wolf, P. R., DeWitt, B. A., & Wilkinson, B. E. (2013). Elements of Photogrammetry with Application in GIS: Fourth Edition. New York: McGraw Hill Professional.
Yakar, M., Yilmaz, H. M., & Mutluoglu, O. (2010). Close range photogrammetry and robotic total station in volume calculation. International Journal of Physical Sciences, 5(2), 086–096.
Copyright (c) 2022 Journal of Applied Geospatial Information
This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.
Copyright @2023. This is an open-access article distributed under the terms of the Creative Commons Attribution-ShareAlike 4.0 International License which permits unrestricted use, distribution, and reproduction in any medium. Copyrights of all materials published in JAGI are freely available without charge to users or / institution. Users are allowed to read, download, copy, distribute, search, or link to full-text articles in this journal without asking by giving appropriate credit, provide a link to the license, and indicate if changes were made. All of the remix, transform, or build upon the material must distribute the contributions under the same license as the original.
