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All Journal Indonesian Journal of Geography Jurnal Fisika Unand Jurnal Pengabdian Masyarakat Bangsa GeoEco
Isnaini, Een Lujainatul
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Comparative Assessment on the Use of Videogrammetry and Photogrammetry for Rapid and Low-Cost Three-Dimensional Modeling Nuha, Muhammad Ulin; Pramudya, Alif Farhan; Laia, Bonifasius Efraim; Husain, Rainaldy; Setiaji, Danang; Isnaini, Een Lujainatul; Perdana, Redho Surya; Atmojo, Aulia Try; Jatmiko, Retnadi Heru
Indonesian Journal of Geography Vol 56, No 3 (2024): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.87960

Abstract

The current activities in photogrammetry technology such as the permission to apply non-metric cameras, development of Structure from Motion (SfM), and potential usage of videogrammetry are part of the answers to the need for low-cost camera-based mapping. Therefore, this study aimed to test and compare the accuracy of photogrammetry and videogrammetry methods for three-dimensional (3D) modeling obtained using a non-metric camera with SfM processing. Terrestrial Laser Scanner (TLS) was used to obtain comparative data and the results showed a degradation of photo resolution in videogrammetry method, causing a reduction in the number of point clouds produced compared to photogrammetry. Moreover, the point cloud test showed that the surface variation results for both methods were identical to 3D modeling with a higher point density recorded in photogrammetry and the relative distance was different by 0.125 meters. The average difference in point cloud between photogrammetry and TLS was 0.062 meters while videogrammetry and TLS had 0.106 meters. The absolute test produced an RMSE value of 0.022 meters for photogrammetry and 0.032 meters for videogrammetry at a 95% confidence interval, indicating the two methods produced similar data quality. The results led to the conclusion that videogrammetry had satisfactory values and could be used as an alternative in 3D modeling but was not considered better than photogrammetry. Received: 2023-08-13 Revised: 2024-05-27   Accepted: 2024-09-20 Published: 2024-10-10
Pemutakhiran Peta Foto Udara Desa Girimulyo untuk Mendukung Pengembangan Desa Agroforestri Berbasis Informasi Geospasial Ilyas, Ilyas; Isnaini, Een Lujainatul; Nuha, Muhammad Ulin; Perdana, Agung Mahadi Putra; Nurhayati, Misfallah
Jurnal Pengabdian Masyarakat Bangsa Vol. 2 No. 1 (2024): Maret
Publisher : Amirul Bangun Bangsa

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.59837/jpmba.v2i1.774

Abstract

Dalam upaya mendukung pengembangan program Desa Agroforestri berbasis Informasi Geospasial di Desa Girimulyo, penting akan adanya data dan informasi yang berbasis geospasial. Masih kurangnya ketersediaan data dan informasi menjadi salah satu kendala terbentuknya program tersebut. Oleh karena itu kegiatan tersebut akan memerlukan data dan informasi spasial sebagai data utama dalam pengambangan program agroforestri dengan mengangkat bibit unggulan lokal yaitu Alpukat Siger. Pemanfaatan teknologi fotogrametri menjadi salah satu solusi yang tepat mengingat proses pemotretan wilayah dapat dilakukan dengan ketelitian yang tinggi (resolusi spasial tinggi). Meski sebelumnya sudah pernah dilakukan pemotretan foto udara wilayah Desa Girimulyo, tetapi masih ada sebagian kecil dari wilayah keseluruhan yang belum dilakukan pemotretan. Sebagai desa binaan dari Program Studi Geomatika ITERA, tim pengabdian akan membantu menyediakan data berupa peta foto udara yang sebelumnya masih terbatas hanya beberapa dusun. Hasil dari kegiatan ini berupa peta foto udara Desa Girimulyo yang dapat digunakan sebagai Informasi Geospasial Dasar (IGD) untuk mendukung kegiatan apapun, khususnya pengembangan program desa agroforestri.
Analisis Deformasi di Lampung dan Selat Sunda Berdasarkan Data GNSS tahun 2018 hingga 2021 Anggara, Ongky; Rahadianto, Muhammad Ario Eko; Alif, Satrio Muhammad; Isnaini, Een Lujainatul
Jurnal Fisika Unand Vol 13 No 5 (2024)
Publisher : Universitas Andalas

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25077/jfu.13.5.637-643.2024

Abstract

The Lampung Province and Sunda Strait have a seismic gap zone with the potential for major earthquakes in the future. This study analyzes the deformation occurring in this region using continuous Global Navigation Satellite System (GNSS) station data from Indonesia Continuously Operating Reference Station (InaCORS) and Sumatran GPS Array (SuGAr) from 2018 to 2021.5. The GNSS data was processed using the Bernese 5.2 scientific software, applying least squares for velocity changes and statistical tests to analyze significance. The data processing was carried out in two schemes: the first scheme covering 2018-2020, and the second covering 2019-2021. The results of the deformation analysis from 2018 to 2021, using two continuous GNSS data processing schemes, showed velocity changes relative to the Sundaland Plate ranging from ~2 mm/year to ~20 mm/year. In the eastern region of the Sumatra fault, the velocity changes were smaller, around ~5 mm/year, due to the minimal influence of tectonic activity. However, in the Sunda Strait region, the deformation was influenced by volcanic activity. The deformation occurring in Lampung Province and the Sunda Strait, based on GNSS velocity changes, significantly contributes to tectonic and volcanic activities.
DETERMINING THE LOCATION OF LAND SUBSIDENCE OBSERVATION POINTS BASED ON LITHOLOGICAL DATA AND LAND COVER CHANGES IN LAMPUNG PROVINCE Perdana, Redho Surya; Fikri, Muhammad; Alif, Satrio Muhammad; Isnaini, Een Lujainatul; Fauzi, Adam Irwansyah
GeoEco Vol 8, No 2 (2022): GeoEco July 2022
Publisher : Universitas Sebelas Maret (UNS)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/ge.v8i2.50412

Abstract

Land subsidence is a phenomenon that always occurs due to natural factors as well as human actions. Land subsidence has an even impact on all fronts. Land subsidence occurs continuously, therefore it is necessary to observe the phenomenon of land subsidence periodically using the GNSS method, which requires a benchmark that serves as a reference point for observation. With the need for a new benchmark devoted to observing land subsidence, it is necessary to do spatial modeling which is useful for finding out the suitability of the location where the subsidence observation point will be made. Spatial modeling was carried out using land cover data and lithology type to then be given weight and score and determined the soil movement vulnerability class into three, namely low class, medium class, and high class. The results of the spatial modeling of subsidence vulnerability show that the area12292.60 square kilometers is low grade, 20230.64 square kilometers represents medium class and 540.32 square kilometers is high class. Based on these results, the planning of the location of new observation points was carried out in areas with moderate to high levels of vulnerability with a total of 87 points scattered throughout the cities in Lampung.
Co-Authors Atmojo, Aulia Try Fauzi, Adam Irwansyah Husain, Rainaldy Ilyas Ilyas Laia, Bonifasius Efraim Muhammad Fikri Muhammad Ulin Nuha Nurhayati, Misfallah Perdana, Agung Mahadi Putra Perdana, Redho Surya Pramudya, Alif Farhan Rahadianto, Muhammad Ario Eko Retnadi Heru Jatmiko Satrio Muhammad Alif Setiaji, Danang