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JPH06339016A Expired / Lapsed JP ⏱️ 0.0 years remaining

Automatic color gamut conversion method, automatic color gamut conversion device and automatic color conversion device

Assignee: NEC Corp
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Filing: 1993-05-31
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Granted: —
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Expires: 2013-05-31
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Abstract

Abstract Translated from Japanese (57)【要約】 【目的】カラー出力装置間色再現域相違吸収の自動色再 現域変換を行なう。 【構成】この自動色再現域変換装置3は、第1の色再現 域テーブル1から得られる元代表色信号31と第2の色 再現域テーブル2から得られる目的代表色信号30との 相違を吸収するための色再現域変換処理において変換パ ラメータを変化させて元代表色信号31に施し変換色信 号32とする色再現域変換手段4と、変換色信号32が 目的色再現域外に存在する場合変換色信号32を目的色 再現域の表面上の色信号に変換する張り付け処理手段6 とを備える。また、元代表色信号31と色再現域変換手 段4あるいは張り付け手段6の出力信号との色差を計算 する色差計算手段8と、色差の総和が最小となる変換パ ラメータを用いたときの色再現域変換を元色再現域およ び目的色再現域間の最適色再現域変換として選択する色 再現域変換選択手段9とを備える。 (57) [Abstract] [Purpose] Performs automatic color gamut conversion for absorption of differences in color gamut between color output devices. This automatic color gamut conversion device 3 determines the difference between an original representative color signal 31 obtained from a first color reproduction area table 1 and a target representative color signal 30 obtained from a second color reproduction area table 2. When the conversion parameter is changed in the color gamut conversion processing for absorption and applied to the original representative color signal 31 to obtain the converted color signal 32, and the converted color signal 32 exists outside the target color gamut. Sticking processing means 6 for converting the converted color signal 32 into a color signal on the surface of the target color reproduction range. With. Further, a color difference calculation means 8 for calculating a color difference between the original representative color signal 31 and the output signal of the color reproduction area conversion means 4 or the pasting means 6, and a color reproduction area using a conversion parameter that minimizes the sum of the color differences. And a color gamut conversion selecting means 9 for selecting a conversion as an optimum color gamut conversion between the original color gamut and the target color gamut.

Inventors

  • 👤 Masato Tsukada
  • 👤 正人 塚田

Bibliographic Details

Application Number —
Jurisdiction JP
Data Source google_patents
Last Synchronized 2026-11-09 19:15
CPC Classifications
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References Cited (Backward Citations)

JPS61281768A Cited
JPH03289874A Cited
JPH04181872A Cited

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