Baihaqi, Maserati Teja (2018) Implementasi Bas Relief Menggunakan gradien citra dan alpha blending untuk pengenalan obyek. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Bas Relief adalah gambar timbul atau relief yang memiliki ketinggian lebih rendah dibandingkan relief jenis lainnya. Bas relief mempunyai banyak kegunaan salah satunya dapat dijadikan alat pengenalan objek. Namun, belum banyak aplikasi pemodelan bas relief yang ada dan mudah digunakan. Selain itu kebanyakan generator bas relief menggunakan input dari model tiga dimensi.
Tugas akhir ini mengimplementasikan pemodelan bas relief menggunakan Intuitive style yang memungkinkan pengguna mengatur ketinggian dan banyak detail dari model tiga dimensi bas relief yang dibuat. Input pada program ini merupakan gambar 2 dimensi berekstensi png. Pada gambar dua dimensi dilakukan perhitungan gradien dan overlayering menggunakan algoritma alpha blending. Hasil gradien digunakan untuk menurunkan ketinggian dari background sedangkan hasil overlayering digunakan untuk memperkirakan ketinggian dan detail dari objek dalam gambar. Kemudian model bas relief dibentuk menggunakan triangle mesh dan disimpan ke dalam sebuah file berekstensi obj.
Uji coba dilakukan menggunakan 3 citra input yang dibentuk menjadi 20 model tiga dimensi bas relief. Kemudian dilakukan survey kepada 87 responden. Survey dilakukan untuk menentukan background (sejajar dengan foreground atau lebih rendah), tepian (landai atau curam), nilai skala (5, 20, 30, 40, 50) dan nilai sigma(1, 2, 3, 4, 5). Hasil survey menunjukkan bahwa bas relief yang memiliki background lebih rendah dari foreground lebih banyak dipilih oleh responden dengan persentase 81,99% ,sedangkan tepi objek yang landai lebih banyak dipilih dari tepi curam dengan persentase 59,77%, nilai skala 30 paling banyak dipilih dengan persentase 35,63% dan nilai sigma 1 paling banyak dipilih dengan persentase 54,02%. =======================================================================================================
Bas Relief is an embossed image or relief that has the lower altitude between other type of relief. Bas relief has many uses, one of its uses is as an object introduction tool. However, there are not many bas relief modeling applications exist and are easy to use. In addition, most of bas relief generators use three dimention model input for creating bas relief.
This final project proposes a bas relief modeling using Intuitive style that allow us to adjust the height and detail of three dimentional bas relief model which created in this program. The input in this program is a 2 dimensional image with png extension. Gradient calculation and overlaying using alpha blending algorithm was done in the two-dimensional image. The gradient results is used to lower the height of the background while the overlaying result is used to estimate height and detail of objects in the image. The bas relief model then formed using triangle mesh and stored into a file with obj extention type.
The experiment conducted using 3 input images formed into 20 three dimentional models of bas relief. Then we conducted a survey to 87 respondents. show that optimum bas reliefs have lower backgrounds than the foreground, sloping edges of objects, 30 for scale values to adjust the altitude and 1 for sigma values to adjust details The survey was conducted to determine the background (parallel to the foreground or lower), edge (ramps or steep), scale (5, 20, 30, 40, 50) and sigma value (1, 2, 3, 4, 5). Survey results show that bas reliefs which has lower backgrounds than foreground are preferred by respondents with 81,99% percentage, whereas the sloping object edges are preferred from steep edges with 59,77% percentage, 30 is the most selected value of scale by 35,63% percentage and sigma value 1 is most preferred with 54,02% percentage.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSIf 621.367 Bai i-1 3100018075033 |
| Uncontrolled Keywords: | bas relief; gradient image; alpha blending; intuitive style; bas relief; Triangle mesh |
| Subjects: | Q Science > QA Mathematics > QA76 Computer software Q Science > QA Mathematics > QA76.9 Computer algorithms. Virtual Reality. Computer simulation. |
| Divisions: | Faculty of Information Technology > Informatics Engineering > 55201-(S1) Undergraduate Thesis |
| Depositing User: | Baihaqi Maserati Teja |
| Date Deposited: | 25 Jan 2018 07:58 |
| Last Modified: | 14 Apr 2020 07:29 |
| URI: | http://repository.its.ac.id/id/eprint/50300 |
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