Bit-depth scalable lossless coding for high dynamic range images

Iwahashi, M. and Yoshida, T. and Mokhtar, N.B. and Kiya, H. (2015) Bit-depth scalable lossless coding for high dynamic range images. Eurasip Journal on Advances in Signal Processing. pp. 1-15. ISSN 1687-6180, DOI

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In this paper, we propose a bit-depth scalable lossless coding method for high dynamic range (HDR) images based on a reversible logarithmic mapping. HDR images are generally expressed as floating-point data, such as in the OpenEXR or RGBE formats. Our bit-depth scalable coding approach outputs base layer data and enhancement layer data. It can reconstruct the low dynamic range (LDR) image from the base layer data and reconstructs the HDR image by adding the enhancement layer data. Most previous two-layer methods have focused on the lossy coding of HDR images. Unfortunately, the extension of previous lossy methods to lossless coding does not significantly compress the enhancement layer data. This is because the bit depth becomes very large, especially for HDR images in floating-point data format. To tackle this problem, we apply a reversible logarithmic mapping to the input HDR data. Moreover, we introduce a format conversion to avoid any degradation in the quality of the reconstructed LDR image. The proposed method is effective for both OpenEXR and RGBE formats. Through a series of experiments, we confirm that the proposed method decreases the volume of compressed data while maintaining the visual quality of the reconstructed LDR images.

Item Type: Article
Funders: JSPS KAKENHI 26289117
Additional Information: ISI Document Delivery No.: CE0WU Times Cited: 0 Cited Reference Count: 24 Cited References: Anonymous, 2002, 1099310 ISO, P1 Blinn JF, 1997, IEEE COMPUT GRAPH, V17, P80, DOI 10.1109/38.595279 Bogart R, 2003, ACM SIGGRAPH SKETCH BOSCHETTI A, 2010, P IEEE INT C IM PROC, P3145 Chiang J-C, 2011, EURASIP J ADV SIG PR, P1 Descampe A, 2006, IEEE T CIRC SYST VID, V16, P1397, DOI 10.1109/TCSVT.2006.884573 Iwahashi M., 2012, P AS PAC SIGN INF PR, P1 Iwahashi M, 2014, P INT C AC SPEECH SI, P1340 Jinno T., 2012, Proceedings of the 2012 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP 2012), DOI 10.1109/ICASSP.2012.6287996 Kaneko K, 2010, P 16 INT C VIRT SYST, P133 KHAN IR, 2008, P IEEE INT C AC SPEE, P1169 KIKUCHI H, 2009, P INT S INT SIGN PRO, P264 Mantiuk R, 2006, ACM T GRAPH, V25 Park S, 2008, IEICE T FUND ELECTR, VE91A, P1541, DOI 10.1093/ietfec/e91-a.6.1541 Pendu ML, 2014, P INT C AC SPEECH SI, P7367 Ping CY, 2013, P INT WORKSH ADV IM, P169 Reinhard E., 2010, HIGH DYNAMIC RANGE I Shih YS, 2010, P INT COMP S BIOINSP, P148 Skodras A, 2001, IEEE SIGNAL PROC MAG, V18, P36, DOI 10.1109/79.952804 Ward G, 1991, REAL PIXELS GRAPHICS Ward G, 2006, P ACM SIGGRAPH 2006 Winken M, 2007, P IEEE INT C IM PROC, V1, P5 Xu RF, 2005, IEEE COMPUT GRAPH, V25, P57, DOI 10.1109/MCG.2005.133 ZHANG Y, 2012, P INT C IM PROC KYOT, P1057 Iwahashi, Masahiro Yoshida, Taichi Mokhtar, Norrima Binti Kiya, Hitoshi JSPS KAKENHI 26289117 This work was supported by JSPS KAKENHI Grant Number 26289117. 0 SPRINGER INTERNATIONAL PUBLISHING AG CHAM EURASIP J ADV SIG PR
Uncontrolled Keywords: High dynamic range imaging, Lossless coding, Bit-depth scalable coding, JPEG-2000,
Subjects: T Technology > T Technology (General)
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering
Depositing User: Mr Jenal S
Date Deposited: 17 Sep 2015 03:35
Last Modified: 17 Sep 2015 03:35

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