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

    Keywords

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

    ASJC Scopus subject areas

    • Computer Vision and Pattern Recognition

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  • 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