Hierarchical tone mapping for high dynamic range image visualization

Guoping Qiu; Jiang Duan

doi:10.1117/12.633384

24 June 2005 Hierarchical tone mapping for high dynamic range image visualization

Guoping Qiu, Jiang Duan

Proceedings Volume 5960, Visual Communications and Image Processing 2005; 596060 (2005) https://doi.org/10.1117/12.633384
Event: Visual Communications and Image Processing 2005, 2005, Beijing, China

Abstract

In this paper, we present a computationally efficient, practically easy to use tone mapping techniques for the visualization of high dynamic range (HDR) images in low dynamic range (LDR) reproduction devices. The new method, termed hierarchical nonlinear linear (HNL) tone-mapping operator maps the pixels in two hierarchical steps. The first step allocates appropriate numbers of LDR display levels to different HDR intensity intervals according to the pixel densities of the intervals. The second step linearly maps the HDR intensity intervals to theirs allocated LDR display levels. In the developed HNL scheme, the assignment of LDR display levels to HDR intensity intervals is controlled by a very simple and flexible formula with a single adjustable parameter. We also show that our new operators can be used for the effective enhancement of ordinary images.

Citation Download Citation

Guoping Qiu and Jiang Duan "Hierarchical tone mapping for high dynamic range image visualization", Proc. SPIE 5960, Visual Communications and Image Processing 2005, 596060 (24 June 2005); https://doi.org/10.1117/12.633384

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