Removing the Blocking Artifacts for Highly Compressed JPEG Images 


Vol. 31,  No. 9, pp. 869-875, Sep.  2006


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  Abstract

Nowadays JPEG encoder uses block based DCT and quantization to compress the size of still image. JPEG encoding method performs better compression efficiency than the other still image encoding method. However, when encoding a still image at low bit-rate, high frequency coefficients could be lost because of the coarse quantization so the blocking artifacts occur. In this paper, we propose the method of eliminating the blocking artifacts which occur when the still image is encoded by JPEG at a high compression rate. The principle of proposed algorithm is that the eliminating the blocking artifacts, which occur in the boundary of blocks, in DCT domain with 4×4 block-based method. First of all, observe the blocking artifacts with 4×4 block in DCT domain. Then eliminate the blocking effects using effective filtering method that is 4×4 block-based. Experimental results have clearly shown that our algorithm presents substantially higher quality in subjective and objective point of view than the other algorithms.

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  Cite this article

[IEEE Style]

S. Jin, W. Kim, J. Jeong, "Removing the Blocking Artifacts for Highly Compressed JPEG Images," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 9, pp. 869-875, 2006. DOI: .

[ACM Style]

Soonjong Jin, Wonki Kim, and Jechang Jeong. 2006. Removing the Blocking Artifacts for Highly Compressed JPEG Images. The Journal of Korean Institute of Communications and Information Sciences, 31, 9, (2006), 869-875. DOI: .

[KICS Style]

Soonjong Jin, Wonki Kim, Jechang Jeong, "Removing the Blocking Artifacts for Highly Compressed JPEG Images," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 9, pp. 869-875, 9. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880