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Construction of Reversible Variable Length Code for Digital Image Processing

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Author(s): NEETU YADAV, | K.C. ROY, | YOGESH KRISHAN

Journal: International Journal of Engineering Science and Technology
ISSN 0975-5462

Volume: 2;
Issue: 10;
Start page: 5332;
Date: 2010;
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Keywords: Variable Length codes | Image Processing | Reversible Variable Length Codes

ABSTRACT
Many image and video coding standard, such as JPEG, H.261, H.263, MPEG-1, MPEG-2 use variable length code (VLC) as their entropy coding scheme. However, VLCs have a big disadvantage when transmitting over anoisy channel, thus error in transmission occurs. Reversible variable lengths codes (RVLCs) are not only prefix codes but also suffix codes. RVLCs are used in MPEG-4, JPEG-2000, H.263+, and H.263++. Reversible variable length codes have been used to augment the error elastic capabilities of VLC.In this paper we propose an algorithm forconstruction of reversible variable length codes with good error correcting properties.
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