HEVC Üzerinde Düşük Bit-Derinliğine Sahip Hareket Kestirim Yöntemlerinin Başarımlarının Değerlendirilmesi

Ramazan Duvar, Ayhan Küçükmanisa, Orhan Akbulut, Aysun Taşyapı Çelebi, Oğuzhan Urhan
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Öz


Bu çalışmada düşük bit derinliği gösterimi temeli hareket kestirimi yaklaşımlarının en güncel video kodlama standardı olan HEVC üzerinde detaylı bir karşılaştırmalı analiz gerçekleştirilmiştir. Böylelikle geçmişte çoğunlukla açık çevrim performans değerlendirmesine tabii tutulan bu yaklaşımların bir kodlayıcı içerisindeki gerçek performansı ortaya çıkarılmıştır. Bunun yanı sıra, düşük bit‑derinliği gösterimi temelli hareket kestirim yaklaşımlarının daha da hızlandırılması için seyrek arama yaklaşımları ile tümleştirerek HEVC üzerine uygulanması literatürde ilk kez incelenmiştir. Bu inceleme sonucunda HEVC referans yazılımında kullanılan TZS isimli algoritmanın düşük-bit derinliğindeki görüntüler üzerinde kullanımı durumunda performans kaybı oluşacağı çıkarılmıştır.

Anahtar kelimeler


HEVC, video kodlama, hareket kestirimi

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Referanslar


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