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http://dx.doi.org/10.5909/JEB.2011.16.4.624

Chroma Interpolation using FIR Filter and Linear Filter  

Kim, Jeong-Pil (DMS Lab. Dept. of Computer Engineering, Sejong University)
Lee, Yung-Lyul (DMS Lab. Dept. of Computer Engineering, Sejong University)
Publication Information
Journal of Broadcast Engineering / v.16, no.4, 2011 , pp. 624-634 More about this Journal
Abstract
Recently, the JCT-VC is developing the next generation video coding standard that is called HEVC. HEVC has adopted many coding technologies increasing coding efficiency. For chroma interpolation, DCT-based interpolation filter showing better performance than the linear filter in H.264/AVC was adopted in HEVC. In this paper, a combined filter that utilizes the FIR filter and the linear filter in H.264/AVC is proposed to increase coding efficiency. When the proposed method is compared with DCT-based interpolation filter, the experimental results for various sequences show that the average BD-rate improvements on chroma U and V components are 0.9% and 1.1%, respectively, in the high efficiency case of random access structure, those on U and V components are 1.1% and 1.1%, respectively, in the low complexity case of random access structure, those on U and V components are 0.9% and 1.4%, respectively, in the high efficiency case of low delay structure, and those on U and V components are 1.8% and 1.8%, respectively, in the low complexity case of low delay structure.
Keywords
HEVC; H.264/AVC; Interpolation; FIR filter; Linear filter;
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