Design of a DCT-based Image Compression with Efficient Enhancement Filter

Authors: Yen-Yu Chen, Pao-Ching Chu, Ya-Ling Tsai

Abstract:

The algorithm represents the DCT coefficients to concentrate signal energy and proposes combination and dictator to eliminate the correlation in the same level subband for encoding the DCT-based images. This work adopts DCT and modifies the SPIHT algorithm to encode DCT coefficients. The proposed algorithm also provides the enhancement function in low bit rate in order to improve the perceptual quality. Experimental results indicate that the proposed technique improves the quality of the reconstructed image in terms of both PSNR and the perceptual results close to JPEG2000 at the same bit rate.

Keywords: JPEG 2000, enhancement filter

Digital Object Identifier (DOI): doi.org/10.5281/zenodo.1333604

References:

[1] N. Ahmed, T. Natarajan and K. R. Rao, "Discrete cosine transform," IEEE Transations Computer.," vol. C-23, pp. 90-93, Jan. 1974
[2] Dony, R.D., Haykin, S, "Optimally adaptive transform coding," IEEE Transactions on Image Processing, vol. 4 no. 10 pp. 1358-1370, Oct 1995
[3] M. Antonini, M. Barlaud, P. Mathieu, and I. Daubechies, "Image cod¬ing using wavelet transform," IEEE Transaction on Image Processing," vol. 1, no. 2, pp. 205-220, Apr. 1992
[4] A. Skodras, C. Christopoulos, and T. Ebrahiini, "The JPEG2000 still image compression standard," IEEE Signal Processing Mag., vol. 18, no. 5, pp. 36-58, Sept. 2001
[5] A. Said and W. A. Pearlman, "A New, Fast, and Efficient Image Co¬dec Based on Set Partitioning in Hierarchical Trees," IEEE Transac¬tions Circuits and System for Video Technology, vol. 7,no. 3, pp. 243¬250, June 1996
[6] Tai, S.C, Chen, Y. Y., and Yan, W. C, "New, High Fidelity Medical Image Compression Based on Modified SPIHT", Optical Engineering, vol. 42, no. 7, pp. 1956-1963, Jul. 2003
[7] Chen, Y. Y., Chang, Y. W., and Yan, W. C, "Design a Deblocking Filter with Three Separate Modes in DCT-based Coding", Journal of Visual Communication and Image Representation, vol. 19, no. 4, pp. 231-244, May 2008,