Proceedings of the Korean Society of Broadcast Engineers Conference (한국방송∙미디어공학회:학술대회논문집)
- 2009.01a
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- Pages.830-833
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- 2009
A STUDY ON EDGE ADAPTIVE DEBLOCKING FILTER
- Matsuo, Shohei (NTT Cyber Space Laboratories, NTT Corporation) ;
- Takamura, Seishi (NTT Cyber Space Laboratories, NTT Corporation) ;
- Yashima, Yoshiyuki (NTT Cyber Space Laboratories, NTT Corporation)
- Published : 2009.01.12
Abstract
Deblocking Filter (DF) is newly introduced into H.264/AVC to remove blocky artifacts. It improves the picture quality and the improved picture is set to the frame buffer for motion compensation. As a result, higher coding efficiency is achieved by DF. However, if the original image has heavily-slanted patterns, DF removes the edges to be kept because it is applied only perpendicularly to the block boundaries. In this paper, we propose Edge Adaptive Deblocking Filter (EADF) which is applied not only for the perpendicular but also for several slanted directions to deal with the problem. Simulation results showed us that EADF was especially effective for the sequence "Foreman" with PSNR gain of 0.04 dB.