Seeded Region Growing pada Ruang Warna HSI untuk Segmentasi Citra Ikan Tuna
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Abstract
Citra ikan tuna sebelum masuk tahapan klasifikasi, harus memiliki hasil segmentasi yang baik. Hasil segmentasi yang baik adalah objek dan background terpisah dengan jelas. Citra ikan tuna yang memiliki sebaran cahaya yang tidak merata dan memiliki tekstur yang kompleks akan menghasilkan kesalahan segmentasi. Salah satu metode segmentasi pada citra adalah seeded region growing dan parameter yang digunakan hanya dua yaitu seed dan threshold. Penelitian ini mengusulkan metode seeded region growing pada ruang warna HSI untuk segmentasi citra ikan tuna. Ruang warna RGB (red green blue) pada citra ikan tuna ditransformasikan kedalam ruang warna HSI (hue saturasi intesitas) yang kemudian hanya ruang hue untuk dijadikan segmentasi dengan menggunakan seeded region growing. Penentuan parameter seed dan threshold dilakukan secara manual dan hasil dari segmentasi tersebut dilakukan refinement dengan morfologi matematika. Pengujian dilakukan sebanyak 30 citra dan metode evaluasi hasil segmentasi menggunakan RAE (relative foreground area error), MAE (missclassification error) dan MHD (modified Hausdroff distance). Citra ikan tuna berhasil dilakukan segmentasi dengan dibuktikan nilai RAE, ME dan MHD secara berturut adalah 5,40%, 1,53% dan 0,41%.
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