Multilevel Reversible Video Watermarking with Improvement on Occluded Areas

Yıl 2018, Cilt: 22 Sayı: 4, 1135 - 1141, 01.08.2018

İbrahim Yıldırım

https://doi.org/10.16984/saufenbilder.349966

Öz

This paper investigates the influence of the occlusion in
reversible video watermarking technique based on histogram modification of
motion compensated prediction error and presents a novel reversible video
watermarking algorithm which has better embedding capacity and PSNR in occluded
areas. In occluded areas, conventional motion estimation techniques calculate
higher prediction error. Therefore, watermarking algorithm which exploits
prediction error has small embedding capacity and poor image quality. To reduce
the prediction error, occlusion detection algorithms must be employed in motion
estimation. 

Anahtar Kelimeler

Occlusion Detection, Reversible Video Watermarking, Video Watermarking, Data Hiding, Motion Estimation

Açılma Kapanma Bölgelerinde İyileştirilmiş Çok Seviyeli Tersinir Video Damgalama

Öz

Bu makalede video üzerindeki açılma kapanma bölgelerinin hareket
dengelemeli öngörü hatalarının histogramlarının değiştirilmesine dayalı
tersinir video damgalama yöntemi üzerindeki etkisi incelenmiş ve açılma kapanma
bölgelerinde daha iyi damgalama kapasitesi ve PSNR sağlayan yeni bir tersinir
video damgalama algoritması geliştirilmiştir. Açılma kapanma bölgelerinde,
geleneksel hareket kestirimi yöntemleri yüksek öngörü hatası hesaplar. Bu
yüzden, öngörü hatalarını değerlendiren damgalama algoritmaları düşük damgalama
kapasitesi ve zayıf görüntü kalitesi verir. Öngörü hatalarını küçültmek için açılma
kapanma bölgelerini algılayan algoritmaların hareket kestiriminde kullanılması
gerekmektedir.

Anahtar Kelimeler

Açılma Kapanma Algılama, Tersinir Video Damgalama, Video Damgalama, Veri Saklama, Hareket Kestirimi

Kaynakça

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