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IEICE TRANSACTIONS on Fundamentals

Two-Layer Lossless HDR Coding Using Histogram Packing Technique with Backward Compatibility to JPEG

Osamu WATANABE, Hiroyuki KOBAYASHI, Hitoshi KIYA

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Summary :

An efficient two-layer coding method using the histogram packing technique with the backward compatibility to the legacy JPEG is proposed in this paper. The JPEG XT, which is the international standard to compress HDR images, adopts two-layer coding scheme for backward compatibility to the legacy JPEG. However, this two-layer coding structure does not give better lossless performance than the other existing methods for HDR image compression with single-layer structure. Moreover, the lossless compression of the JPEG XT has a problem on determination of the coding parameters; The lossless performance is affected by the input images and/or the parameter values. That is, finding appropriate combination of the values is necessary to achieve good lossless performance. It is firstly pointed out that the histogram packing technique considering the histogram sparseness of HDR images is able to improve the performance of lossless compression. Then, a novel two-layer coding with the histogram packing technique and an additional lossless encoder is proposed. The experimental results demonstrate that not only the proposed method has a better lossless compression performance than that of the JPEG XT, but also there is no need to determine image-dependent parameter values for good compression performance without losing the backward compatibility to the well known legacy JPEG standard.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E101-A No.11 pp.1823-1831
Publication Date
2018/11/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E101.A.1823
Type of Manuscript
Special Section PAPER (Special Section on Smart Multimedia & Communication Systems)
Category
Image, Multimedia Environment Tech

Authors

Osamu WATANABE
  Takushoku University
Hiroyuki KOBAYASHI
  Tokyo Metropolitan College of Industrial Technology
Hitoshi KIYA
  Tokyo Metropolitan University

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