A Study on the Multiresolution Motion Estimation Adaquate to Low-Band-Shift Method in Wavelet Domain 


Vol. 28,  No. 2, pp. 110-120, Feb.  2003


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  Abstract

In this paper, we propose a Multiresolution Motion Estimation(MRME) adapted to Low-Band-Shift(LBS) method in wavelet domain. To overcome shift-variant property on wavelet coefficients, the LBS was previously proposed. This method which is applied to reference frame in video coding technique, has superior performance in terms of rate-distortion characteristic. However, this method needs more memory and computational complexity.
In this paper, The computational complexity of the proposed method(LBS-MRME) is about 15.6% of that of existing method at 3-level wavelet transform. And although it has about 7 times as much as existing method's motion vector since each subband has different motion vector, it decreases motion compensated prediction error by detailed motion estimation, and then has better efficient coding performance.
The experimental results with the proposed method showed about 0.3～11.6% improvement of MAD performance in case of lossless coding, and 0.3～3.0dB improvement of PSNR performance at the same bit rate in case of lossy coding.

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  Cite this article

[IEEE Style]

J. Cho, H. Kim, H. Ko, "A Study on the Multiresolution Motion Estimation Adaquate to Low-Band-Shift Method in Wavelet Domain," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 2, pp. 110-120, 2003. DOI: .

[ACM Style]

Jae-Man Cho, Hyun-Min Kim, and Hyung-Hwa Ko. 2003. A Study on the Multiresolution Motion Estimation Adaquate to Low-Band-Shift Method in Wavelet Domain. The Journal of Korean Institute of Communications and Information Sciences, 28, 2, (2003), 110-120. DOI: .

[KICS Style]

Jae-Man Cho, Hyun-Min Kim, Hyung-Hwa Ko, "A Study on the Multiresolution Motion Estimation Adaquate to Low-Band-Shift Method in Wavelet Domain," The Journal of Korean Institute of Communications and Information Sciences, vol. 28, no. 2, pp. 110-120, 2. 2003.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880