DESIGN OF ASYMMETRICAL REVERSIBLE VARIABLE-LENGTH CODES AND THE COMPARISON OF THEIR ROBUSTNESSES (ThuPmOR4)
Author(s) :
Wook-Hyun Jeong (Kwangju Institute of Science and Technology (K-JIST), Korea)
Young-Suk Yoon (Kwangju Institute of Science and Technology (K-JIST), Korea)
Yo-Sung Ho (Kwangju Institute of Science and Technology (K-JIST), Korea)
Abstract : The reversible variable length code (RVLC) has been proposed as one of the error resilience tools owing to recovery capability for corrupted video streams. Although the asymmetrical RVLC re-quires separate two code tables, it shows better coding efficiency due to more flexible codeword assignment. Still, existing design methods for asymmetrical RVLCs are inefficient. In this paper, we propose a new design algorithm for the asymmetrical RVLC using the property of the Huffman code and the average length function. In addition, comparing the robustness of RVLCs shows that pro-posed efficient asymmetrical RVLC does not lose error-correcting property significantly.

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