The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
Um método eficiente de codificação de duas camadas usando a técnica de empacotamento de histograma com compatibilidade retroativa com o JPEG legado é proposto neste artigo. O JPEG XT, que é o padrão internacional para compactação de imagens HDR, adota um esquema de codificação de duas camadas para compatibilidade retroativa com o JPEG legado. No entanto, esta estrutura de codificação de duas camadas não oferece melhor desempenho sem perdas do que outros métodos existentes para compressão de imagens HDR com estrutura de camada única. Além disso, a compressão sem perdas do JPEG XT apresenta um problema na determinação dos parâmetros de codificação; O desempenho sem perdas é afetado pelas imagens de entrada e/ou pelos valores dos parâmetros. Ou seja, é necessário encontrar uma combinação apropriada dos valores para obter um bom desempenho sem perdas. Primeiramente aponta-se que a técnica de empacotamento do histograma considerando a dispersão do histograma das imagens HDR é capaz de melhorar o desempenho da compressão sem perdas. Então, uma nova codificação de duas camadas com a técnica de empacotamento de histograma e um codificador adicional sem perdas é proposta. Os resultados experimentais demonstram que não apenas o método proposto tem um melhor desempenho de compressão sem perdas do que o JPEG XT, mas também não há necessidade de determinar valores de parâmetros dependentes da imagem para um bom desempenho de compressão sem perder a compatibilidade retroativa com o legado bem conhecido. Padrão JPEG.
Osamu WATANABE
Takushoku University
Hiroyuki KOBAYASHI
Tokyo Metropolitan College of Industrial Technology
Hitoshi KIYA
Tokyo Metropolitan University
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Osamu WATANABE, Hiroyuki KOBAYASHI, Hitoshi KIYA, "Two-Layer Lossless HDR Coding Using Histogram Packing Technique with Backward Compatibility to JPEG" in IEICE TRANSACTIONS on Fundamentals,
vol. E101-A, no. 11, pp. 1823-1831, November 2018, doi: 10.1587/transfun.E101.A.1823.
Abstract: 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.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.E101.A.1823/_p
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@ARTICLE{e101-a_11_1823,
author={Osamu WATANABE, Hiroyuki KOBAYASHI, Hitoshi KIYA, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Two-Layer Lossless HDR Coding Using Histogram Packing Technique with Backward Compatibility to JPEG},
year={2018},
volume={E101-A},
number={11},
pages={1823-1831},
abstract={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.},
keywords={},
doi={10.1587/transfun.E101.A.1823},
ISSN={1745-1337},
month={November},}
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TY - JOUR
TI - Two-Layer Lossless HDR Coding Using Histogram Packing Technique with Backward Compatibility to JPEG
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 1823
EP - 1831
AU - Osamu WATANABE
AU - Hiroyuki KOBAYASHI
AU - Hitoshi KIYA
PY - 2018
DO - 10.1587/transfun.E101.A.1823
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E101-A
IS - 11
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - November 2018
AB - 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.
ER -