Simplified realization of normalized integer WHT for multiplierless integer DCT

Taizo Suzuki, Masaaki Ikehara

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    Abstract

    Walsh-Hadamard transform (WHT) based multiplierless integer discrete cosine transform (IntDCT) has structural regularity even in short word length lifting coefficients. It, however, cannot apply to image coding without the quantization part because WHT was implemented by only 1 adder operations without the normalization scaling factors. Although we have already presented a normalized integer WHT (IntWHT) as its solution, it also has many adder operations. In this paper, using a two-dimensional (2-D) separable transform of one-dimensional (1-D) normalized WHT is applied to each lifting coefficient, we present a more simplified realization of normalized IntWHT with structural regularity for short word length lifting coefficients. Finally, in lossless-to-lossy image coding, IntDCT based on the proposed IntWHT is validated.

    Original languageEnglish
    Title of host publication2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Proceedings
    Pages472-476
    Number of pages5
    DOIs
    Publication statusPublished - 2011 Apr 21
    Event2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Sedona, AZ, United States
    Duration: 2011 Jan 42011 Jan 7

    Publication series

    Name2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Proceedings

    Other

    Other2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011
    CountryUnited States
    CitySedona, AZ
    Period11/1/411/1/7

    Keywords

    • Integer discrete cosine transform (IntDCT)
    • integer Walsh-Hadamard transform (IntWHT)
    • lossless-to-lossy image coding

    ASJC Scopus subject areas

    • Computer Networks and Communications
    • Signal Processing
    • Education

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  • Cite this

    Suzuki, T., & Ikehara, M. (2011). Simplified realization of normalized integer WHT for multiplierless integer DCT. In 2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Proceedings (pp. 472-476). [5739260] (2011 Digital Signal Processing and Signal Processing Education Meeting, DSP/SPE 2011 - Proceedings). https://doi.org/10.1109/DSP-SPE.2011.5739260