CONTROLLER AND MULTI-DIMENSIONAL CORRECTION METHOD AND MULTI-DIMENSIONAL CORRECTION PROGRAM

• Main Author: HIRANO SACHIKO
• Format: Patent
• Language: English; Japanese
• Published: 13.07.2017
• Subjects: CALCULATING; CINEMATOGRAPHY; COMPUTING; CORRECTION OF TYPOGRAPHICAL ERRORS; COUNTING; ELECTRIC COMMUNICATION TECHNIQUE; ELECTRICITY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; IMAGE DATA PROCESSING OR GENERATION, IN GENERAL; LINING MACHINES; MAGNETOGRAPHY; PERFORMING OPERATIONS; PHOTOGRAPHY; PHYSICS; PICTORIAL COMMUNICATION, e.g. TELEVISION; PRINTING; SELECTIVE PRINTING MECHANISMS; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To perform multi-dimensional correction appropriately according to the magnitude relation of a user machine, a standard machine, and the gamut of a target.SOLUTION: A controller includes a RIP processing section performing multi-dimensional correction for correcting the hue value of a user machine to that of a standard machine by using a LUT of 3 or more dimension, and color conversion for converting the hue value of the standard machine into that of a target. A control section creates a first correction LUT of output color where turbidity removal of secondary color is turned OFF for each input color and a second correction LUT of output color where turbidity removal of secondary color is turned ON for each input color, compares the saturation of secondary color solid of the user machine, standard machine and target, instructs multi-dimensional correction by specifying the second correction LUT, when the hue value of the user machine is larger than that of the standard machine, instructs multi-dimensional correction by specifying the second correction LUT, when the hue value of the target is larger than that of the user machine, and instructs multi-dimensional correction by specifying the first correction LUT, when the hue value of the target is smaller than that of the standard machine.SELECTED DRAWING: Figure 7 【課題】ユーザー機、標準機、ターゲットの色域の大小関係に応じて、適切に多次元補正を実施する。【解決手段】コントローラは、３以上の多次元のＬＵＴを用いてユーザー機の色彩値を標準機の色彩値に補正する多次元補正と、標準機の色彩値をターゲットの色彩値に変換する色変換と、を行うＲＩＰ処理部を備え、制御部は、各入力色に対して２次色の濁り除去をＯＦＦにした出力色の第１の補正ＬＵＴと各入力色に対して２次色の濁り除去をＯＮにした出力色の第２の補正ＬＵＴとを作成し、ユーザー機と標準機とターゲットの２次色ベタの彩度を比較し、ユーザー機の彩度が標準機の彩度よりも大きい場合において、ターゲットの彩度がユーザー機の彩度よりも大きい場合は、第２の補正ＬＵＴを指定して多次元補正を指示し、ターゲットの彩度が標準機の彩度よりも小さい場合は、第１の補正ＬＵＴを指定して多次元補正を指示する。【選択図】図７