2011年4月1日金曜日

Apophysis 7X15 001 ノイズ、粒状性


 Apophysisのプレビュー画面のDensityを30程度に設定していると、ノイズ、粒状性がひどい画像で不安になる場合がある。Ajustment画面の¥Rendering¥Gamma Thresholdの値を0.05前後にするとか、TransformのWeight値を増加させると軽減する。しかし、階調性が損なわれる。最終アウトプットであるレンダーリング結果をみると、プレビューで画質が悪くても、Render¥Quality¥Densityを高めれば、高画質を得ることができる。ただし、レンダリング時間がかかる。Densityを1桁上げると、時間は約10倍必要。 

Preview
Rendering Density 10000
Rendering Density 100
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   <xform weight="3" color="0.189" symmetry="0.2" julian="1" coefs="0.707107 -0.707107 0.707107 0.707107 0 -0.3" julian_power="2" julian_dist="-1" opacity="1" />
   <xform weight="2" color="0.368" julian="0.25" coefs="0.707107 0.707107 -0.707107 0.707107 0 0" julian_power="4" julian_dist="-1" opacity="1" />
   <xform weight="1" color="0.542" julian="0.5" coefs="1 0 0 1 0 0" julian_power="15" julian_dist="1" opacity="1" />
   <xform weight="1" color="0.439" julian="0.1" coefs="0.707107 0.707107 -0.707107 0.707107 0 0" julian_power="8" julian_dist="-1.5" opacity="1" />
   <xform weight="2" color="0.429" symmetry="0.5" julian="1" coefs="0.707107 -0.707107 0.707107 0.707107 0 -3.3" julian_power="2" julian_dist="1" opacity="1" />
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