A NEW ENTROPY ENCODING ALGORITHM FOR IMAGE COMPRESSION USING DCT

D.Malarvizhi; Dr.K.Kuppusamy

doi:https://doi.org/10.14445/22315381/IJETT-V3I3P214

Research Article | Open Access | Download PDF

Volume 3 | Issue 3 | Year 2012 | Article Id. IJETT-V3I3P214 | DOI : https://doi.org/10.14445/22315381/IJETT-V3I3P214

A NEW ENTROPY ENCODING ALGORITHM FOR IMAGE COMPRESSION USING DCT

D.Malarvizhi , Dr.K.Kuppusamy

Citation :

D.Malarvizhi , Dr.K.Kuppusamy, "A NEW ENTROPY ENCODING ALGORITHM FOR IMAGE COMPRESSION USING DCT," International Journal of Engineering Trends and Technology (IJETT), vol. 3, no. 3, pp. 327-332, 2012. Crossref, https://doi.org/10.14445/22315381/IJETT-V3I3P214

Abstract

Digital images contain large amount of information that need evolving effective techniques for stori ng and transmitting the ever increasing volumes of data. Image compression addresses the problem by reduci ng the amount of da ta required to represent a digital image. Image compression is achieved by removing data redundancy while preserving information content. In this paper, a new alternative method for simultaneous image acquisition and compression called adaptive c ompressed sampling. It also extend ed the need for image reconstruction on compressed images. Image reconstruction has t o be defined in this context. whereas Image enhancement strives to bring out certain features in an image to simplify the extraction of image infor mation, image reconstruction is the attempt to retrieve information that has been lost or obscured in the imaging process itself.

Keywords

Compression, Reconstruction, Discrete Cosine Transform, Quantization, Entropy, Lossless Compression, Lossy Compression .

References

[1] Ahmed, N., Natarajan T., Rao K. R.: Discrete cosine transform. In: IEEE Transactions onComputers, Vol. 23, (1974) 90 - 93 .
[2] Rao, K., Yip P.: Discrete Cosine Transform, Algorit hms, Advantages, Applications. In:Academic Press (1990) .
[3] Wallace, G. K.: The JPEG Still Picture Compression Standard. In: Comm. Of the ACM, Vol. 34, No.4 (1991).
[4] Pennebaker, W. B., Mitchell, J. L.: JPEG Still Image Data Compression Standard. In: Va nNostrand Reinhold, New York (1993)
[5] Kesavan, Hareesh. Choosing a DCT Quantization Matrix for JPEG Encoding .