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Jianqing Xing
Taiyuan University of Technology

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A Rate Control Algorithm in JPEG2000 Based on Code Content Prediction Fengmei Liang; Jianqing Xing; Xiaoliang Li
Indonesian Journal of Electrical Engineering and Computer Science Vol 11, No 11: November 2013
Publisher : Institute of Advanced Engineering and Science

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Abstract

In order to accelerate the coding process of JPEG2000 and avoid encoding useless codes, a new algorithm is proposed for JPEG2000 rate control. This algorithm is improved by the model prediction algorithm.The code passes transmit the lowest frequency sub-band without distortion after wavelet decomposition. Then the proposed algorithm allocates the rate for the current code block accords to the number of coding passes and the weight of wavelet quantization. At last, it encodes the code block which brings the greatest amount of information preferentially, accords to the code block bit-plane relationship in the sub-band; In addition, the algorithm truncates the code-stream in real time during the encoding procedure. Compared with the PCRD algorithm, the experimental results indicate that the proposed algorithm can greatly reduce the computation operation and encoding time. DOI: http://dx.doi.org/10.11591/telkomnika.v11i11.3720
Co-Authors Fengmei Liang Xiaoliang Li