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Two-Step Rate Distortion Optimization Algorithm for High Efficiency Video Coding

Authors
KALYAN GOSWAMIKim, Byung GyuDAE YEOL LEEJONGHO KIMSEYOON JEONGHUI YONG KIM
Issue Date
Dec-2017
Publisher
한국멀티미디어학회
Keywords
High Efficiency Video Coding (HEVC); Rate Distortion Optimization (RDO); Video compression; Structural Similarity Matric (SSIM); Inter prediction; Intra prediction
Citation
Journal of Multimedia Information System, v.4, no. 4, pp 311 - 316
Pages
6
Journal Title
Journal of Multimedia Information System
Volume
4
Number
4
Start Page
311
End Page
316
URI
https://scholarworks.sookmyung.ac.kr/handle/2020.sw.sookmyung/2126
DOI
10.9717/JMIS.2017.4.4.311
ISSN
2383-7632
Abstract
High Efficiency Video Coding (HEVC) is the newest video coding standard for improvement in video data compression. This new standard provides a significant improvement in picture quality, especially for high-resolution videos. A quadtree-based structure is created for the encoding and decoding processes and the rate-distortion (RD) cost is calculated for all possible dimensions of coding units in the quadtree. To get the best combination of the block an optimization process is performed in the encoder, called rate distortion optimization (RDO). In this work we are proposing a novel approach to enhance the overall RDO process of HEVC encoder. The proposed algorithm is performed in two steps. In the first step, like HEVC, it performs general rate distortion optimization. The second step is an extra checking where a SSIM based cost is evaluated. Moreover, a ㅗfast SSIM (FSSIM) calculation technique is also proposed in this paper.
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공과대학 (인공지능공학부)
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