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http://dx.doi.org/10.13067/JKIECS.2014.9.10.1207

Quantization Modeling of Intra Frame for Rate Control  

Park, Sang-Hyun (순천대학교 멀티미디어공학과)
Publication Information
The Journal of the Korea institute of electronic communication sciences / v.9, no.10, 2014 , pp. 1207-1214 More about this Journal
Abstract
The first frame of a GOP is encoded in intra mode which generates a larger number of bits. In addition, the first frame is used for the inter mode encoding of the following frames. Thus the encoding results of the intra frame affects the first frame as well as the following frames. Traditionally, the quantization parameter for an intra frame is determined only depending on the bpp not considering the characteristics of the intra frame. For accurate intra frame encoding, we should consider not only bpp but also the complexity of the video sequence and the output bandwidth. In this paper, we propose a real-time quantization model which is used to calculate the quantization parameter for an intra frame encoding based on the investigation on the characteristics of a GOP. It is shown by experimental results that the proposed quantization model captures the characteristics of an intra frame effectively and the proposed method for model parameters accurately estimates the real values.
Keywords
Rate Control; Video Compression; H.264/AVC; Initial QP; Quantization Model;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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