53 lines
1.6 KiB
HTML
53 lines
1.6 KiB
HTML
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<?xml version="1.0" encoding="utf-8"?>
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.1//EN" "http://www.w3.org/TR/xhtml11/DTD/xhtml11.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml">
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<head>
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<title>Luminance HDR User Manual — Tonemapping operators reference — Pattanaik</title>
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
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<link href="style.css" rel="stylesheet" type="text/css" />
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</head>
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<body>
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<h2>Pattanaik</h2>
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The implementation of a tone mapping operator as described in:
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<P>
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Time-Dependent Visual Adaptation for Realistic Image Display.
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S.N. Pattanaik, J. Tumblin, H. Yee, and D.P. Greenberg.
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In Proceedings of ACM SIGGRAPH 2000.
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<P>
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This operator requires properly calibrated image data (in cd/m2) and
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its results should be gamma corrected.
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<P>
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The local version of this operator is based on the following paper:
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<P>
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Adaptive Gain Control For High Dynamic Range Image Display.
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S.N. Pattanaik, H. Yee.
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In proceedings of SCCG 2002.
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<P>
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<H3>OPTIONS</H3>
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<DL COMPACT>
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<DT><B>Multiplier</B><DD>
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<P>
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Multiply input values by a multiplier value.
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Useful if input data is not calibrated. Default value: 1.0
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<DT><B>Local Tone Mapping</B><DD>
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<P>
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Use local version of the tone mapping. Time-dependent effects are
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cancelled while using local version, global version is used by
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default.
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<DT><B>Cone Level</B><DD>
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<P>
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Set the adaptation level for cones. By default, the
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adaptation level is calculated as a logarithmic average of luminance
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in the input image.
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<DT><B>Rod Level</B><DD>
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<P>
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Set the adaptation level for rods. By default, the adaptation level is
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calculated as a logarithmic average of luminance in the input image.
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</body>
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</html>
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