Wook-Hyun Jeong

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Variable-length codes (VLCs) are generally employed to improve compression efficiency using data statistics. However, VLCs are very sensitive to bit errors in noisy transmission environments, such as mobile channels. Recently, several reversible variable-length codes (RVLCs) have been introduced due to recovering information from corrupted compressed(More)
Variable-length codes (VLCs) improve coding performance using statistical characteristics of source symbols; however, VLCs have disastrous effects from bit errors in noisy transmission environments. In order to overcome problems with VLCs, reversible variable-length codes (RVLCs) have been introduced as one of the error resilience tools due to their error(More)
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 requires separate two code tables, it shows better coding efficiency due to more flexible codeword assignment. Still, existing design methods for asymmetrical RVLCs are(More)
In recent years, reversible variable-length codes (RVLC) have been proposed to recover correct information from erroneous bitstreams. The free distance of a binary code indicates the strength of the code to transmission errors. Since the minimum free distance of RVLC is one, we cannot assure that encoded data are little exposed. In this paper, we propose a(More)
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