Two-Step Rate Distortion Optimization Algorithm for High Efficiency Video Coding
- Authors
- KALYAN GOSWAMI; Kim, Byung Gyu; DAE YEOL LEE; JONGHO KIM; SEYOON JEONG; HUI 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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