penajaman citra - gunadarma
TRANSCRIPT
![Page 1: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/1.jpg)
Penajaman Citra
• Tujuan– Memperjelas tepi objek pada citra
• Kebalikan pelembutan• Metodenya menggunakan Penapis
Lolos Tinggi (HighPass Filter)• Sering disebut sebagai Penajaman tepi
(edge sharpening)
![Page 2: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/2.jpg)
Penajaman Citra
• ContohSebelum
Sesudah
![Page 3: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/3.jpg)
Penajaman Citra
• Penapis Lolos Tinggi– Syaratnya
• Koefisien Filter boleh positif, negatif atau nol• Jumlah semua koefisien adalah 0 atau 1
– Contohnya
![Page 4: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/4.jpg)
Penajaman Citra
• Contoh
![Page 5: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/5.jpg)
Penajaman Citra
• Contoh
![Page 6: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/6.jpg)
Penajaman Citra
• Hasila) citra asal b) dengan filter (ii)
![Page 7: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/7.jpg)
Penajaman Citra
• Hasila) citra asal c) dengan filter (iii)
![Page 8: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/8.jpg)
Penajaman Citra
• Hasila) citra asal c) dengan filter (iv)
![Page 9: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/9.jpg)
Penajaman Laplacian
![Page 10: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/10.jpg)
Pewarnaan Semu
• Proses pemberian warna tertentu padanilai pixel citra hitam-putih berdasarkankriteria tertentu
• Alasan– Mata manusia bisa membedakan warna
![Page 11: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/11.jpg)
Koreksi Geometrik
• Perbaikan citra dengan mengubah nilaigeometrisnya
• Metodenya– Rotasi– Translasi– Penskalaan/Perbesaran/Pengecilan– Skew– dll
![Page 12: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/12.jpg)
Koreksi Geometrik
• Contoh citra San Francisco, rotasi 6 derajat
![Page 13: Penajaman Citra - Gunadarma](https://reader031.vdocuments.net/reader031/viewer/2022012513/618cee6c7101d464a9708491/html5/thumbnails/13.jpg)
Koreksi Geometrik