A Wavefront Array Processor Utilizing a Recursion Equation for ME/MC in the Frequency Domain 


Vol. 31,  No. 10, pp. 1000-1010, Oct.  2006


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  Abstract

This paper proposes a new architecture for DCT-based motion estimation and compensation. Previous methods do not take sufficient advantage of the sparseness of 2-D DCT coefficients to reduce execution time. We first derive a recursion equation to perform DCT domain motion estimation more efficiently; we then use it to develop a wavefront array processor (WAP) consisting of processing elements. In addition, we show that the recursion equation enables motion predicted images with different frequency bands, for example, from the images with low frequency components to the images with low and high frequency components. The wavefront array processor can reconfigure to different motion estimation algorithms, such as logarithmic search and three step search, without architectural modifications. These properties can be effectively used to reduce the energy required for video encoding and decoding. The proposed WAP architecture achieves a significant reduction in computational complexity and processing time. It is also shown that the motion estimation algorithm in the transform domain using SAD (Sum of Absolute Differences) matching criterion maximizes PSNR and the compression ratio for the practical video coding applications when compared to the motion estimation algorithm in the spatial domain using either SAD or SSD.

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  Cite this article

[IEEE Style]

J. Lee and C. Ryu, "A Wavefront Array Processor Utilizing a Recursion Equation for ME/MC in the Frequency Domain," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 10, pp. 1000-1010, 2006. DOI: .

[ACM Style]

Jooheung Lee and Chul Ryu. 2006. A Wavefront Array Processor Utilizing a Recursion Equation for ME/MC in the Frequency Domain. The Journal of Korean Institute of Communications and Information Sciences, 31, 10, (2006), 1000-1010. DOI: .

[KICS Style]

Jooheung Lee and Chul Ryu, "A Wavefront Array Processor Utilizing a Recursion Equation for ME/MC in the Frequency Domain," The Journal of Korean Institute of Communications and Information Sciences, vol. 31, no. 10, pp. 1000-1010, 10. 2006.

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pISSN : 1226 - 4717
eISSN : 2287 - 3880