CONTROL APPARATUS, COLOR MATERIAL AMOUNT RESTRICTION METHOD, AND COLOR MATERIAL AMOUNT RESTRICTION PROGRAM

• Main Author: HIRANO SACHIKO
• Format: Patent
• Language: English; Japanese
• Published: 24.10.2019
• Subjects: CALCULATING; CINEMATOGRAPHY; COMPUTING; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION

To suppress deterioration of a color reproduction even if a color material amount is restricted when printing a matter by using a color material of a color and while color.SOLUTION: A control apparatus that controls a print device is provided with a color material restriction processing part that reduces a color material amount so that a total value of the color material amount of a color in a prescribed pixel and the color material amount of a white color becomes a color material amount restriction value or less in a control apparatus that controls a print device, and changes a ratio of a reduction amount of the color material amount of the color and the reduction amount of the color material amount of the white color in accordance with color information of image information. The color material amount restriction processing part acquires a hue value corresponding to a device value, determines a distribution ratio of the color material reduction amount corresponding to the color and the white color on the basis of the hue value, and provides a distribution ratio determination part for registering the device value and the distribution ratio so as to be corresponded. The color material amount restriction processing part calculates the color material reduction amount by subtracting the color material amount restriction value from the total value of a pixel value of an input pixel of the color and the pixel value of a ground of the white color, acquires the distribution ratio of the device value corresponding to the pixel value of the input pixel, and distributes the color material reduction amount into the input pixel and the ground on the basis of the distribution ratio.SELECTED DRAWING: Figure 13 【課題】カラーと白色の色材とを用いて印刷を行う際に、色材量が制限されても、色再現の劣化を抑制する。【解決手段】印刷装置を制御する制御装置に、所定画素におけるカラーの色材量と白色の色材量との合計値が色材量制限値以下となるように色材量を削減する色材量制限処理部を設け、画像情報の色情報に応じて、カラーの色材量の削減量と白色の色材量の削減量との削減の比率を変更する。更に、デバイス値に対応する色彩値を取得し、色彩値に基づいてカラーと白色とに対する色材削減量の分配比を決定し、デバイス値と分配比とを対応付けて登録する分配比決定部を設け、色材量制限処理部は、カラーの入力画素の画素値と白色の下地の画素値との合計値から色材量制限値を減算して色材削減量を算出し、入力画素の画素値に対応するデバイス値の分配比を取得し、分配比に基づいて色材削減量を入力画素と下地とに分配する。【選択図】図１３