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Improved Algorithm of Sectional Tone Mapping for HDR Images  

Lee, Yong-Hwan (Dept. of Digital Contents, Wonkwang University)
Kim, Heung-Jun (Dept. of Computer Science and Engineering, Gyeongsang National University)
Publication Information
Journal of the Semiconductor & Display Technology / v.20, no.2, 2021 , pp. 137-140 More about this Journal
Abstract
High dynamic range (HDR) technology has been drawing attention in the field of imaging and consumer entertainment. As tools for capturing and creating HDR contents, encoding, and transmission evolve to support HDR formats, various display capabilities are being developed and increased. Hence, there is need for remapping native HDR imagery for display on lower quality legacy standard dynamic range (SDR) displays. This operation is referred to as tone mapping. In this paper, we present a sectional tone mapping method by Lenzen, and expand upon a tone mapping approach to improve temporal stability while maintaining picture quality. Compared to the existing block-based sectional tone mapping, our method uses the edge awareness-based tone mapping. We estimate the performance of the objective metric on temporal flickering. The experimental result shows that the algorithm maintains a smoother relationship between the output luminance values, and this reveals success in reducing halos and improving temporal stability with adopted edge aware filtering.
Keywords
High Dynamic Range Image; Standard Dynamic Range; Sectional Tone Mapping; Edge Awareness;
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