Simplified DCT-lifting-based reversible lapped transforms using parallel processing of two same type lapped transforms

Taizo Suzuki, Masaaki Ikehara

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

2 Citations (Scopus)

Abstract

We present a realization of reversible lapped transforms (RevLTs) with simplified implementations, which are constructed by DCT and DST matrices, adders, and bit-shifters, for lossy-to-lossless image coding in this paper. Each DCT or DST matrix is directly used to each lifting coefficient block and it is called DCT-lifting structure. The structure is obtained by considering parallel processing of two 'same' type LTs and using DCT-lifting factorizations as our previous work. Furthermore, the Hadamard transform and scaling parts in the RevLTs are effectively implemented by extending 2D non-separable lifting structures derived from lifting-based lapped transform (L-LT) used for JPEG XR, the newest image coding standard. As a result, the proposed RevLTs achieve not only simplified implementations with any block size, but also comparable lossy-to-lossless image coding performance to the conventional RevLTs.

Original languageEnglish
Title of host publication2014 IEEE International Conference on Image Processing, ICIP 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages5586-5590
Number of pages5
ISBN (Print)9781479957514
DOIs
Publication statusPublished - 2014 Jan 28

    Fingerprint

Keywords

  • DCT
  • DST
  • lapped transform (LT)
  • lifting structure
  • lossy-to-lossless image coding

ASJC Scopus subject areas

  • Computer Vision and Pattern Recognition

Cite this

Suzuki, T., & Ikehara, M. (2014). Simplified DCT-lifting-based reversible lapped transforms using parallel processing of two same type lapped transforms. In 2014 IEEE International Conference on Image Processing, ICIP 2014 (pp. 5586-5590). [7026130] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICIP.2014.7026130