63 lines
3.4 KiB
HTML
63 lines
3.4 KiB
HTML
<html lang="ja">
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
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<title>SpectrumFx Iwa</title>
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</head>
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<body bgcolor="#f5f5f5" text="#220011">
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<h1><img src = ".\img\fx_iwa_spectrum.png" width = 30 height = 30 > SpectrumFx Iwa</h1>
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<h4>● Overview</h4>
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This effect produces a rainbow pattern like that of a thin film interference, according to the brightness<br>
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of the input image.<br>
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Even though the rainbow colors generated are not actually a thin film interference, similar results to<br>
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a glare material can be obtained.
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<h4>● Input port</h4>
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<UL>
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<LI><b>Source</b> : Connect the source image. The brightness of the source image, corresponds to the<br>
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thickness of the thin film.<br>
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The brighter the luminosity, the thinner the film thickness will be. A luminosity of 0.0 corresponds to<br>
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"Thickness Min" described later, and a luminosity of 1.0 corresponds to "Thickness Max".</LI>
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<LI><b>Light</b> : Connect the light image.<br>
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When a light image is connected, the output results are as follows:</LI>
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<UL>
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<LI>The Alpha channel of the output result is replaced with the alpha channel of the Light image.</LI>
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<LI>If the "Light Threshold" parameter described below is enabled, the Light image and the generated<br>
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rainbow can be combined and output on the screen.</LI>
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</UL>
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</UL>
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<h4>● Parameters</h4>
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<UL>
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<LI><b>Intensity</b> : The light intensity. The higher the value, the brighter the rainbow.</LI>
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<LI><b>Refractive Index</b> : The refractive index of the medium. The higher the value, the brighter the<br>
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rainbow.</LI>
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<LI><b>Thickness Max</b> : Maximum thickness of the thin film. Corresponds to the film thickness of the<br>
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low luminance portion of the Source image.</LI>
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<LI><b>Thickness Min</b> : Minimum thickness of the thin film. Corresponds to the film thickness of the<br>
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high luminance part of the Source image.</LI>
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*Thickness can also take a negative value. In that case, all parts where the film thickness is negative<br>
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are calculated as zero.<br>
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*Thickness Min and Max can be reversed. In that case, the iridescent pattern will be reversed.
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<LI><b>R/G/B Gamma</b> : Gamma correction value for each RGB channel of the rainbow pattern.</LI><br>
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<LI><b>Lens Factor</b> : A gamma correction value that can be added when outputting a rainbow pattern from<br>
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the luminosity of the Source image.<br>
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This allows, for example, concentric patterns to be distorted through a convex / concave lens in the<br>
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iridescent period.</LI>
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<LI><b>Light Threshold</b> : When a Light image is connected, the Light image can be combined with the<br>
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rainbow pattern on the screen.<br>
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Light Threshold is the minimum Alpha channel value of the Light image required for screen composition.<br>
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For each pixel, the following processing will be performed:</LI>
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<UL>
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<LI>When the alpha channel of the Light image is below the Light Threshold: Screen composition is not<br>
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performed.</LI>
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<LI>When the alpha channel of the Light image is 1: The Light image is composited on the screen at 100%.</LI>
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<LI>When the alpha channel of the Light image is greater than the Light Threshold but less than 1: The<br>
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screen composition ratio will be linearly interpolated.</LI>
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</UL>
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The smaller the Light Threshold value, the larger the screen ratio with the Light image, so the output<br>
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image will be brighter. It can also accept negative values.
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</UL>
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</body>
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</html> |