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キーワード:
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要旨:
We propose a fast, high quality tone mapping technique to display high contrast
images
on devices with limited dynamic range of luminance values. The method is based
on
logarithmic compression of luminance values, imitating the human response to
light.
A bias power function is introduced to adaptively vary logarithmic bases,
resulting in good
preservation of details and contrast. To improve contrast in dark areas,
changes to
the gamma correction procedure are proposed. Our adaptive logarithmic mapping
technique is
capable of producing perceptually tuned images with high dynamic content and
works
at interactive speeds. We demonstrate a successful application of our technique
to a high dynamic range video player which enables to
adjust optimal viewing conditions for any kind of display while taking
into account the user preferences concerning brightness, contrast compression,
and detail
reproduction.
