An adaptive algorithm for the display of high-dynamic range images

  • Authors:

  • Xiaoguang Li;Kin Man Lam;Lansun Shen

  • Affiliations:

  • Signal and Information Processing Laboratory, Beijing University of Technology, Beijing 100022, China and Centre for Multimedia Signal Processing, Department of Electronic and Information Engineer ...;Centre for Multimedia Signal Processing, Department of Electronic and Information Engineering, The Hong Kong Polytechnic University, Hong Kong;Signal and Information Processing Laboratory, Beijing University of Technology, Beijing 100022, China

  • Venue:
  • Journal of Visual Communication and Image Representation
  • Year:
  • 2007

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Abstract

A novel algorithm based on spatial and statistical information is proposed for the display of high-dynamic range (HDR) images. In our proposed algorithm, an image is first decomposed into a base layer and a detailed layer, which represent its smoothed and fine details, respectively. The problem of overall impression preservation is regarded as a global issue in our algorithm. Statistical-based histogram adjustment is employed to deal with the base layer. The reproduction of visual details is regarded as a local issue. The detailed layer obtained using a spatial filter is adaptively enhanced according to the mapping function used for the base layer. The main contributions of our algorithm are that: (1) an adaptive detail-enhancement method is proposed and (2) a gain map is defined to combine the local and global issues. Experimental results show the superior performance of our approach in terms of visual quality.