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Klasifikacija SLIKA NA PRIRODNE I SINTETIČKE Luka Ribar
Klasifikacija Određivanje klase objekta na osnovu ulaznih parametara Parametri :{p1,p2,…,pn}  Klase:{c1,c2,…,cm} Trening – Podešavanje unutrašnjih parametara AdaBoost algoritam
Klasifikacija slika Pronalaženje razlika između prirodnih i sintetičkih slika Karakteristike: - broj nijansi boja (RGB,Grayscale) - broj susednih identičnih piksela - jednobojne površine - intenzitet prelaza - DCT (Discrete Cosine Transform)
Broj grayscale nijansi Broj boja Odnos broja boja i površine slike Broj identičnih susednih piksela Odnos maksimalne jedbnobojne površine i površine slike Broj jednobojnih površina na slici Intenzitet prelaza DCT
Greška za pojedinačne parametre
Rezultati 2000 slika (1000 sintetičkih-1000 prirodnih) Polovina uzeta za trening, polovina za testiranje Uspešnost algoritma 99,3 %
Zaključak Algoritam se pokazao veoma uspešnim Moguća poboljšanja dodavanjem novih parametara
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Klasifikacija Slika Na Prirodne I Sintetičke

  • 1. Klasifikacija SLIKA NA PRIRODNE I SINTETIČKE Luka Ribar
  • 2. Klasifikacija Određivanje klase objekta na osnovu ulaznih parametara Parametri :{p1,p2,…,pn} Klase:{c1,c2,…,cm} Trening – Podešavanje unutrašnjih parametara AdaBoost algoritam
  • 3. Klasifikacija slika Pronalaženje razlika između prirodnih i sintetičkih slika Karakteristike: - broj nijansi boja (RGB,Grayscale) - broj susednih identičnih piksela - jednobojne površine - intenzitet prelaza - DCT (Discrete Cosine Transform)
  • 4. Broj grayscale nijansi Broj boja Odnos broja boja i površine slike Broj identičnih susednih piksela Odnos maksimalne jedbnobojne površine i površine slike Broj jednobojnih površina na slici Intenzitet prelaza DCT
  • 6. Rezultati 2000 slika (1000 sintetičkih-1000 prirodnih) Polovina uzeta za trening, polovina za testiranje Uspešnost algoritma 99,3 %
  • 7. Zaključak Algoritam se pokazao veoma uspešnim Moguća poboljšanja dodavanjem novih parametara