JP2000228715A5 - - Google Patents

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JP2000228715A5
JP2000228715A5 JP1999353797A JP35379799A JP2000228715A5 JP 2000228715 A5 JP2000228715 A5 JP 2000228715A5 JP 1999353797 A JP1999353797 A JP 1999353797A JP 35379799 A JP35379799 A JP 35379799A JP 2000228715 A5 JP2000228715 A5 JP 2000228715A5
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JP1999353797A
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JP4771569B2 (ja
JP2000228715A (ja
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Priority claimed from US09/217,224 external-priority patent/US6529643B1/en
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コントーン画像４０をワーピングして、ビーム走査軌道の歪みを補正した後、このワーピングコントーン画像６０は、「非ワーピング」コントーンデータと同じように処理（レンダリング）されて、プリント準備の整った二進データとなる。つまり、ワーピングコントーン画像６０は、ＡＡＴ（エイリアス除去タグ付け）モジュール６２、及びＴＲＣ（階調再生曲線）モジュール６４へ送られる。ＡＡＴモジュール６２は、エイリアス除去することが決定されたワーピングピクセルにタグを付け、そのエイリアス除去タグをＴＲＣモジュール６４へ出力する。グレイピクセルのレンダリングは、そのグレイピクセルがエイリアス除去エッジを表しているか、均一領域を表しているかによって、異なった処理を行うのが望ましいので、ピクセルを分類する必要がある。ＡＡＴモジュール６２は、グレイピクセル近傍の分析を行って、そのグレイピクセルが真のグレイ値を表しているか、エイリアス除去エッジを表しているかを決定する。そのグレイピクセルが、暗領域と明領域との急激な変わり目にある（例えば、一方の側にほぼ飽和した（黒）ピクセルがあり、その反対側には背景（白）ピクセルがある）場合には、そのピクセルはエイリアス除去エッジを表している、とするのが適当である。一方、そのグレイピクセル近傍の値が全て類似している場合には、そのピクセルはエイリアス除去エッジではなく、真のグレイ値であろう。
JP35379799A 1998-12-21 1999-12-14 歪み補正方法、及び歪み補正装置 Expired - Fee Related JP4771569B2 (ja)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US217224 1998-12-21
US09/217,224 US6529643B1 (en) 1998-12-21 1998-12-21 System for electronic compensation of beam scan trajectory distortion

Publications (3)

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JP2000228715A JP2000228715A (ja) 2000-08-15
JP2000228715A5 true JP2000228715A5 (ja) 2007-02-08
JP4771569B2 JP4771569B2 (ja) 2011-09-14

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JP35379799A Expired - Fee Related JP4771569B2 (ja) 1998-12-21 1999-12-14 歪み補正方法、及び歪み補正装置

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US (1) US6529643B1 (ja)
JP (1) JP4771569B2 (ja)

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