Fixed-point B.G. Lee IDCT without multiplication

P. P. Zhu; J. G. Liu; S. K. Dai

doi:10.1117/12.749168

14 November 2007 Fixed-point B.G. Lee IDCT without multiplication

P. P. Zhu, J. G. Liu, S. K. Dai

Proceedings Volume 6789, MIPPR 2007: Medical Imaging, Parallel Processing of Images, and Optimization Techniques; 67891W (2007) https://doi.org/10.1117/12.749168
Event: International Symposium on Multispectral Image Processing and Pattern Recognition, 2007, Wuhan, China

Abstract

An improved modified approach to compute the inverse discrete cosine transform (IDCT) is proposed based on B. G. Lee algorithm. We replace the multiplication operator in original B. G. Lee algorithm with addition and shift operators and looking-up table to implement the fix-point computation. Due to the absence of the multiplication operator, this modified algorithm will take less time to complete the same computation.

Citation Download Citation

P. P. Zhu, J. G. Liu, and S. K. Dai "Fixed-point B.G. Lee IDCT without multiplication", Proc. SPIE 6789, MIPPR 2007: Medical Imaging, Parallel Processing of Images, and Optimization Techniques, 67891W (14 November 2007); https://doi.org/10.1117/12.749168

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