Pramudya, Andhika Agung (2023) Analisis Perbandingan Metode Slope Based Filtering Dan Tin Based Filtering Dalam Pembuatan Digital Terrain Model (Dtm) Dari Data (Digital Surface Model) Dsm Orthophoto (Studi Kasus : Kecamatan Plered, Kabupaten Purwakarta, Jawa Barat). Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Kebutuhan akan informasi spasial yang detail semakin meningkat secara signifikan, namun ketersediaan peta dasar yang ada belum dapat memenuhi kebutuhan tersebut. Detail kontur biasanya diperoleh dengan melakukan pemetaan area serta metode konvensional, yaitu mengekstraksi data Digital Terrain Model (DTM) dari stereoplot manual. Penggunaan metode ini memberikan akurasi yang tinggi, namun relatif memakan waktu, sehingga tidak dapat memenuhi permintaan data spasial skala besar yang terus meningkat. Garis kontur yang merupakan elemen penting dalam peta topografi, dapat diperoleh dari data yang diperoleh dari orthophoto dan data deteksi dan jangkauan cahaya (LiDAR). Diperlukan metode yang lebih efisien untuk mempercepat pengiriman data geospasial, dalam hal ini DTM, sebagai bagian dari pembuatan peta topografi skala besar. Penelitian ini dilakukan untuk membandingkan akurasi DTM antara hasil pengolahan data dari Slope Based Filtering dan TIN Based Filtering. Perbandingan yang dilakukan dengan menggunakan kedua metode ini juga bertujuan untuk mengetahui metode yang menghasilkan DTM yang lebih efisien dalam pengolahannya. Penggunaan metode Slope Based Filtering dan TIN Based Filtering diharapkan dapat memberikan alternatif bagi pemerintah, masyarakat dan penelitian selanjutnya dalam memberikan alternatif peta dasar. Perbedaan dari penelitian sebelumnya adalah penggunaan DTM yang diperoleh dari pengolahan data LiDAR sebagai data validasi pada penelitian ini sebagai acuan. Di Indonesia, mereka melakukan penelitian untuk membangkitkan DTM menggunakan metode Slope Based Filtering dan TIN Based Filtering. Penelitian pembuatan DTM dari data LiDAR dan data orthophoto, dengan menggunakan metode TIN untuk hasil pengolahan data LiDAR. Namun, data referensi seperti data orthophoto LiDAR dan Ground Truth tidak digunakan sebagai data validasi dalam penelitian ini.
Hasil dari penelitian ini menunjukkan metode Slope Based Filtering memiliki keakuratan yang lebih tinggi dibandingkan dengan TIN Based Filtering. Hal tersebut dibuktikan oleh hasil klasifikasi pengolahan data menggunakan delapan parameter pada masing-masing metode. Rata-rata RMSEz dan LE90 yang diperoleh melalui metode Slope Based Filtering lebih kecil yaitu 0,152 m dan 0,251 m, sedangkan dengan metode TIN Based Filtering sebesar 0,158 m dan 0,260 m. Metode Slope Based Filtering dan TIN Based Filtering terkalsifikasi pada kelas 1 dengan ketelitian peta 1: 1.000 Menurut Perka BIG No. 6Tahun 2018 dan Permen ATR/BPN No. 21 Tahun 2019.
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The need for detailed spatial information is massively increasing, but the availability of existing base maps has not been able to meet this need. Contour details are usually obtained by performing area mapping as well as conventional methods, namely extracting digital terrain model (DTM) data from manual stereoplots. The use of this method provides high accuracy, but is relatively time consuming, so it cannot meet the ever-increasing DEMands for large-scale spatial data. Contour lines, which are important elements in topographic maps, can be obtained from data obtained from aerial photographs and light detection and coverage data (LiDAR). Priority is needed to accelerate the delivery of geospatial data, in this case DTM, as part of making large-scale topographic maps. This study focuses on the comparison of DTM accuracy between the results of data processing from Slope-Based Filtering and TIN-Based Filtering. Comparisons made using these two methods aim to find out which method produces a more accurate DTM and also a method that is more efficient in its processing.The use of slope-Based Filtering and TIN-Based Filtering methods is expected to provide an alternative for the government, the community and further research in providing alternative base maps. The difference from previous research is the use of DTM obtained from LiDAR data processing as validation data in this study as a reference. In Indonesia they conducted research to generate DTM using slope-Based Filtering and TIN-Based Filtering methods. conducted research on making DTM from LiDAR data and aerial photo data, using the TIN method for LiDAR data processing results. However, reference data such as LiDAR and Ground Truth orthophoto data were not used as validation data in this study.
The results of this study indicate that the Slope Based Filtering method has a higher accuracy than the TIN Based Filtering. This is evidenced by the classification results of data processing using eight parameters in each method. The average RMSEz and LE90 obtained using the Slope Based Filtering method were smaller, namely 0.152 m and 0.251 m, while using the TIN Based Filtering method they were 0.158 m and 0.260 m. The Slope Based Filtering and TIN Based Filtering methods are classified in class 1 with a map accuracy of 1: 1,000 According to Perka BIG No. 6 of 2018 and ATR/BPN Regulation No. 21 of 2019.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSG 621.367 Pra a-1 2023 |
| Uncontrolled Keywords: | Orthophoto, LiDAR, Digital Terrain Model, Slope Based Filtering, TIN Based Filtering |
| Subjects: | G Geography. Anthropology. Recreation > G Geography (General) > G70.212 ArcGIS. Geographic information systems. |
| Divisions: | Faculty of Civil, Planning, and Geo Engineering (CIVPLAN) > Geomatics Engineering > 29202-(S1) Undergraduate Thesis |
| Depositing User: | Andhika Agung Pramudya |
| Date Deposited: | 19 Dec 2023 07:04 |
| Last Modified: | 19 Dec 2023 07:04 |
| URI: | http://repository.its.ac.id/id/eprint/101874 |
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