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

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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

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