JP2002064842A - Method and apparatus for adjusting color - Google Patents
Method and apparatus for adjusting colorInfo
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- JP2002064842A JP2002064842A JP2000245942A JP2000245942A JP2002064842A JP 2002064842 A JP2002064842 A JP 2002064842A JP 2000245942 A JP2000245942 A JP 2000245942A JP 2000245942 A JP2000245942 A JP 2000245942A JP 2002064842 A JP2002064842 A JP 2002064842A
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- color
- adjustment
- image
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、パーソナルコンピ
ュータなどの映像信号を表示する画像表示装置の色調整
方法に係り、特に複数の色についてそれぞれ独立に調整
可能な画像表示装置の色調整方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color adjustment method for an image display device such as a personal computer which displays a video signal, and more particularly to a color adjustment method for an image display device capable of independently adjusting a plurality of colors.
【０００２】[0002]
【従来の技術】近年、液晶モニタやノートパソコン、平
面ＴＶなど液晶パネルやプラズマディスプレイを使用し
た表示装置が急速に普及し、市場からの要求のもと高精
細化や高画質化が進んでいる。同時にマルチメディア化
の流れから液晶モニタで動画を表示したときの色合い調
整やプリンタで印刷した際の色合わせなどの対応をする
ため、従来からある３原色（赤，緑，青）を独立に調整
するだけでなく、より高度な色調整機能を持つ画像表示
装置が提案されている。2. Description of the Related Art In recent years, display devices using a liquid crystal panel or a plasma display such as a liquid crystal monitor, a notebook computer, and a flat-screen TV have rapidly spread, and high definition and high image quality have been demanded by the market. . At the same time, the existing three primary colors (red, green, and blue) are independently adjusted to support color adjustment when displaying moving images on an LCD monitor and color matching when printing on a printer, based on the trend toward multimedia. In addition, an image display device having a more advanced color adjustment function has been proposed.
【０００３】たとえば、公開特許公報（特開平１１−３
０８４７２）では、赤、青、緑、イエロー、シアン、マ
ゼンダの６つの色相と各色相間領域において特定の色相
および色相間領域のみを、他の色相に影響を与えること
なく調整する装置を実現している。しかし実際に異なる
表示特性の液晶パネルの色合いを合わせたり、プリンタ
の出力画像との色合わせを行う場合において、視覚的に
違和感の無い色調整を行なうには原色から中間色まで非
常に多くの色、例えば５０色以上について調整を行う必
要がある。[0003] For example, Japanese Patent Laid-Open Publication No. Hei 11-3
08472), a device that adjusts only the specific hues and the inter-hue regions in the six hues of red, blue, green, yellow, cyan, and magenta and each inter-hue region without affecting other hues is realized. I have. However, when actually adjusting the colors of liquid crystal panels having different display characteristics or performing color matching with an output image of a printer, a very large number of colors from the primary colors to the intermediate colors are needed to perform color adjustment without a sense of discomfort visually. For example, it is necessary to make adjustments for 50 colors or more.
【０００４】従来この色調整を自動化する場合は、図４
に示すような方法がとられていた。この図において、制
御部３１が調整用画像信号として特定の色、例えば全画
面赤一色の映像信号を表示装置３２に出力する。ＲＧＢ
センサ３３は画面上の色情報を検出し、Ａ／Ｄコンバー
タ３４でデジタル信号に変換し制御部３１に出力する。
制御部３１は得られた色情報の値を理論値と比較し、同
じ値になるように表示装置３２の色調整を制御する。こ
の制御を、調整用画像信号の色を順次変えて約５０色以
上について繰り返し行うことにより、異なる表示特性の
液晶パネルの色合わせやプリンタの出力画像との色合わ
せを行う。Conventionally, when this color adjustment is automated, FIG.
A method as shown in FIG. In this figure, a control unit 31 outputs a video signal of a specific color, for example, a full screen red color, to a display device 32 as an adjustment image signal. RGB
The sensor 33 detects color information on the screen, converts the color information into a digital signal by the A / D converter 34, and outputs the digital signal to the control unit 31.
The control unit 31 compares the obtained value of the color information with the theoretical value, and controls the color adjustment of the display device 32 so as to have the same value. By repeating this control for about 50 or more colors by sequentially changing the color of the adjustment image signal, color matching of a liquid crystal panel having different display characteristics and color matching with an output image of a printer are performed.
【０００５】[0005]
【発明が解決しようとする課題】しかしながら、従来の
色調整方法では、多数の色についての調整作業を１色ず
つ順に行なっていたため、自動化しても非常に時間がか
かるという問題があった。However, in the conventional color adjustment method, since the adjustment work for a large number of colors is performed one by one in order, there is a problem that it takes a very long time even if automation is performed.
【０００６】本発明は、上記問題点に鑑みてなされたも
ので、その目的は、多数の色についての調整作業を短時
間で行う色調整方法を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a color adjusting method for performing an adjusting operation on a large number of colors in a short time.
【０００７】[0007]
【課題を解決するための手段】請求項１記載の発明は、
画像表示装置の表示画面に表示される画像の複数の色に
対して独立して色調整が可能な色調整方法において、前
記表示画面を所定の領域に分割し、当該分割した表示画
面の各領域に異なる色情報を持つ調整用画像を表示させ
る処理と、前記表示された画像全体を取得し、当該取得
した画像全体から各領域の色情報を検出する処理と、前
記検出された各領域の色情報の値と当該各領域に対応す
る前記調整用画像の色情報の理論値とが等しくなるよう
色調整を制御する処理とを含むことを特徴とする。According to the first aspect of the present invention,
In a color adjustment method capable of independently performing color adjustment for a plurality of colors of an image displayed on a display screen of an image display device, the display screen is divided into predetermined areas, and each area of the divided display screen is divided. A process of displaying an adjustment image having different color information, a process of acquiring the entire displayed image, and detecting color information of each region from the entire acquired image, and a process of displaying the color of each detected region. Controlling the color adjustment so that the value of the information becomes equal to the theoretical value of the color information of the adjustment image corresponding to each area.
【０００８】請求項２記載の発明は、請求項１記載の色
調整方法において、前記各領域の色調整は、当該各領域
に応じた所定の補正値を用いて補正を行なうことを特徴
とする。According to a second aspect of the present invention, in the color adjustment method according to the first aspect, the color adjustment of each of the regions is performed by using a predetermined correction value corresponding to each of the regions. .
【０００９】請求項３記載の発明は、請求項２記載の色
調整方法において、前記補正値は、前記各領域間で生じ
る色情報の差分に相当し、前記各領域すべてに同一色の
調整用画像を表示させ、所定の一領域を前記調整用画像
の色情報に等しくなるように色調整をした場合に生じる
他の領域の色情報の値と前記調整用画像の色情報の理論
値との差として算出される値であることを特徴とする。According to a third aspect of the present invention, in the color adjustment method according to the second aspect, the correction value corresponds to a difference in color information generated between the regions, and is used for adjusting the same color in all the regions. The image is displayed, and the value of the color information of the other area and the theoretical value of the color information of the adjustment image generated when the color adjustment is performed so that the predetermined one area is equal to the color information of the adjustment image. It is a value calculated as a difference.
【００１０】請求項４記載の発明は、画像表示装置の表
示画面に表示される複数の色をそれぞれ独立に調整する
色調整装置において、前記表示画面に含まれる複数の領
域の各々に対して異なる色情報を有する調整用画像を出
力する調整用画像出力部と、この調整用画像出力部から
出力された画像により表示された画像全体を取り込み、
取り込んだ画像全体から前記各領域の色情報を検出する
色情報検出部と、この色情報検出部に検出された各領域
の色情報と対応する各領域の前記調整用画像の色情報の
理論値とが等しくなるように色調整を行う色調整部とか
らなることを特徴とする。According to a fourth aspect of the present invention, there is provided a color adjusting apparatus for independently adjusting a plurality of colors displayed on a display screen of an image display device, wherein each of the plurality of regions included in the display screen is different. An adjustment image output unit that outputs an adjustment image having color information, and the entire image displayed by the image output from the adjustment image output unit is captured.
A color information detection unit for detecting color information of each area from the entire captured image, and a theoretical value of color information of the adjustment image of each area corresponding to the color information of each area detected by the color information detection unit And a color adjustment unit that performs color adjustment so that the values are equal to each other.
【００１１】請求項５記載の発明は、前記色調整部は、
各領域ごとに決定された所定の補正値により前記色調整
を行うことを特徴とする。According to a fifth aspect of the present invention, the color adjusting section includes:
The color adjustment is performed using a predetermined correction value determined for each area.
【００１２】請求項６記載の発明は、前記補正値は、前
記各領域間で生じる色情報の差分に相当する値であっ
て、前記各領域のすべてに同一色の調整用画像を表示さ
せた場合に所定の一領域を前記調整用画像の色情報と一
致するように色調整した場合に他の領域にそれぞれ生じ
る色情報の値と、前記調整用画像の色情報の理論値との
差として算出されることを特徴とする。According to a sixth aspect of the present invention, the correction value is a value corresponding to a difference in color information generated between the respective regions, and an adjustment image of the same color is displayed in all of the respective regions. In the case where the predetermined one area is color-adjusted to match the color information of the adjustment image, the difference between the value of the color information generated in each of the other areas and the theoretical value of the color information of the adjustment image It is characterized by being calculated.
【００１３】[0013]
【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。図１は本実施の形態による
色調整装置の構成を示した図である。図１において、表
示画面の複数の色に対して独立して色調整が可能な、例
えば、赤、緑、青の各々独立したゲイン調整だけでな
く、その中間色も独立に調整可能な画像表示装置１１
と、前記画像表示装置１１の映像情報を取得するＲＧＢ
センサ１２と、前記ＲＧＢセンサ１２で取得した画像を
図２に示すような所定の領域、後で説明する調整用画像
信号に応じた領域に分割し、上記各領域の色情報をデジ
タル信号に変換する色情報検出部１３と、上記画像表示
装置１１に表示させる調整用画像信号を出力し、かつ上
記色情報検出部１３からのデジタル信号に変換された各
領域の色情報の値と当該各領域に対応する調整用画像信
号の色情報の理論値とが等しくなるように画像表示装置
１１の色調整を制御する制御部１４とから構成される。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a configuration of a color adjustment device according to the present embodiment. In FIG. 1, an image display device capable of independently adjusting colors for a plurality of colors on a display screen, for example, independently adjusting gains of red, green, and blue as well as intermediate colors thereof. 11
And RGB for obtaining video information of the image display device 11
The image obtained by the sensor 12 and the RGB sensor 12 is divided into a predetermined area as shown in FIG. 2 and an area corresponding to an adjustment image signal described later, and the color information of each area is converted into a digital signal. A color information detecting unit 13 for outputting an adjustment image signal to be displayed on the image display device 11, and a color information value of each area converted into a digital signal from the color information detecting unit 13 and the corresponding area And a control unit 14 for controlling the color adjustment of the image display device 11 so that the theoretical value of the color information of the adjustment image signal corresponding to.
【００１４】次に、本発明の実施の形態による色調整方
法の動作を、図３を参照して詳細に説明する。図３は本
実施の形態による色調整方法の動作を示したフローチャ
ートである。まず制御部１４は調整用画像信号として全
画面が単一色、例えば全画面白色の画像信号を出力して
画像表示装置１１に表示させる（ステップＳ１）。色情
報検出部１３はＲＧＢセンサ１２で取得した画像表示装
置１１の表示画面に表示された画像を所定の領域、例え
ば図２に示すようなｍ画素×ｎラインで示される領域、
この図の場合は２５の領域に分割し、各領域の色情報を
デジタル信号に変換する（ステップＳ２）。制御部１４
は実用において最も重要な上記表示画面の中央部分の領
域、例えば図２の領域Ｃの部分の色情報が、調整用画像
信号の白色と等しい色情報（理論値）となるように画像
表示装置１１の色調整を制御する（ステップＳ３）。上
記色調整の制御完了後、再度色情報検出部１３により各
領域の色情報を測定し（ステップＳ４）、制御部１４は
各領域の色情報と上記調整用画像信号の色情報（調整用
画像信号本来の色情報（色温度））との差（色ずれ）の
算出を行ない、当該算出された値を各領域の補正値とし
て保持する（ステップＳ５）。次に制御部１４は調整用
画像信号として上記各領域ごとに異なる色を出力して画
像表示装置１１に表示させる（ステップＳ６）。色情報
検出部１３は上記ステップＳ２の動作と同様に各領域の
色情報をデジタル信号に変換して制御部１４に出力する
（ステップＳ７）。制御部１４は各領域の色情報の値と
と、当該領域に対応する調整用画像信号の色情報の理論
値を上記補正値で補正した値とが等しくなるように、画
像表示装置１１の色調整を制御する（ステップＳ８）。
すべての領域についてステップＳ８の動作を繰り返して
調整作業を完了する（ステップＳ９）。Next, the operation of the color adjusting method according to the embodiment of the present invention will be described in detail with reference to FIG. FIG. 3 is a flowchart showing the operation of the color adjustment method according to the present embodiment. First, the control unit 14 outputs an image signal in which the entire screen is a single color, for example, a full screen white, as an adjustment image signal and causes the image display device 11 to display the image signal (step S1). The color information detection unit 13 converts the image acquired by the RGB sensor 12 and displayed on the display screen of the image display device 11 into a predetermined area, for example, an area indicated by m pixels × n lines as shown in FIG.
In this case, the image data is divided into 25 areas, and the color information of each area is converted into a digital signal (step S2). Control unit 14
The image display device 11 is designed such that the color information (theoretical value) in the central area of the display screen, which is the most important in practical use, for example, the area C in FIG. Is controlled (step S3). After the completion of the color adjustment control, the color information detection unit 13 measures the color information of each area again (step S4), and the control unit 14 determines the color information of each area and the color information of the adjustment image signal (the adjustment image signal). The difference (color shift) from the original color information (color temperature) of the signal is calculated, and the calculated value is held as a correction value for each area (step S5). Next, the control unit 14 outputs a different color for each of the regions as an adjustment image signal and causes the image display device 11 to display the color (step S6). The color information detection unit 13 converts the color information of each area into a digital signal and outputs the digital signal to the control unit 14 in the same manner as the operation of step S2 (step S7). The control unit 14 controls the color of the image display device 11 so that the value of the color information of each area and the value obtained by correcting the theoretical value of the color information of the adjustment image signal corresponding to the area by the correction value are equal. The adjustment is controlled (step S8).
The adjustment operation is completed by repeating the operation of step S8 for all the regions (step S9).
【００１５】また、ステップＳ３において、画面中央部
を理論値（最適）に調整するのではなく、各領域の理論
値と差（色ずれ）を小さくする、例えば各領域の色ずれ
の平均値を最小にしたり、各領域の色ずれの値の最大値
を小さくするように制御部１４が画像表示装置１１の色
調整を制御することにより、ユーザに色ずれを感じさせ
ることを低減する効果が得られる。In step S3, instead of adjusting the central portion of the screen to the theoretical value (optimum), the difference (color shift) between the theoretical value of each area and the theoretical value is reduced. By controlling the color adjustment of the image display device 11 by the control unit 14 so as to minimize the value or to reduce the maximum value of the color shift value of each area, an effect of reducing the user's perception of the color shift is obtained. Can be
【００１６】[0016]
【発明の効果】以上説明したように、本発明の画像表示
装置の色調整方法によれば、多数の色についての色調整
を、表示画面の色ずれの補正を含み、短時間で行うこと
ができる。As described above, according to the color adjusting method of the image display device of the present invention, the color adjustment for a large number of colors can be performed in a short time, including the correction of the color shift of the display screen. it can.
【図１】 本実施の形態による色調整装置の構成を示す
ブロック図である。FIG. 1 is a block diagram illustrating a configuration of a color adjustment device according to an embodiment.
【図２】 本実施の形態による表示画面の各領域の態様
を示す図ある。FIG. 2 is a diagram showing an aspect of each area of a display screen according to the embodiment.
【図３】 本実施の形態による色調整方法の動作を示し
たフローチャートである。FIG. 3 is a flowchart showing an operation of the color adjustment method according to the embodiment.
【図４】 従来技術による画像表示装置の色調整方法が
適用されたシステムの構成図である。FIG. 4 is a configuration diagram of a system to which a color adjustment method of an image display device according to a conventional technique is applied.
【符号の説明】 １１ 画像表示装置 １２ ＲＧＢセンサ １３ 色情報検出部 １４ 制御部[Description of Signs] 11 Image display device 12 RGB sensor 13 Color information detection unit 14 Control unit
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｈ０４Ｎ 1/46 Ｈ０４Ｎ 9/73 Ｂ 9/73 1/46 Ｚ (72)発明者 荒井 豊 東京都港区芝浦四丁目13番23号 エヌイー シー三菱電機ビジュアルシステムズ株式会 社内 Ｆターム(参考） 5B057 AA11 CA08 CA12 CA16 CB08 CB12 CB16 DA16 DB02 DB06 DB09 5C061 BB15 BB17 CC05 EE09 EE19 5C066 AA03 AA15 BA20 CA08 EA13 EB01 KA11 KD02 KE09 KM12 KM13 5C079 HB01 LA02 LA10 LB01 MA11 MA17 NA03 NA11 PA05 5C082 AA01 AA02 AA21 BA12 BA34 BA35 BD02 CA12 CB03 DA87 MM02 ──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) H04N 1/46 H04N 9/73 B 9/73 1/46 Z (72) Inventor Yutaka Arai Minato-ku, Tokyo 4-13-23 Shibaura NEC Mitsubishi Electric Visual Systems Corporation In-house F-term (reference) KM13 5C079 HB01 LA02 LA10 LB01 MA11 MA17 NA03 NA11 PA05 5C082 AA01 AA02 AA21 BA12 BA34 BA35 BD02 CA12 CB03 DA87 MM02
Claims (6)
像の複数の色に対して独立して色調整が可能な色調整方
法において、 前記表示画面を所定の領域に分割し、当該分割した表示
画面の各領域に異なる色情報を持つ調整用画像を表示さ
せる処理と、 前記表示された画像全体を取得し、当該取得した画像全
体から前記分割された各領域の色情報を検出する処理
と、 前記検出された各領域の色情報の値と当該各領域に対応
する前記調整用画像の色情報の理論値とが等しくなるよ
う色調整を制御する処理とを含むことを特徴とする色調
整方法。1. A color adjustment method capable of independently adjusting a plurality of colors of an image displayed on a display screen of an image display device, wherein the display screen is divided into predetermined regions, A process of displaying an adjustment image having different color information in each region of the display screen; a process of acquiring the entire displayed image and detecting the color information of each of the divided regions from the entire acquired image; Controlling the color adjustment so that the detected color information value of each area and the theoretical value of the color information of the adjustment image corresponding to each area become equal. Method.
じた所定の補正値を用いて補正を行なうことを特徴とす
る請求項１記載の色調整方法。2. The color adjustment method according to claim 1, wherein the color adjustment of each area is performed using a predetermined correction value corresponding to each area.
情報の差分に相当し、前記各領域すべてに同一色の調整
用画像を表示させ、所定の一領域を前記調整用画像の色
情報に等しくなるように色調整をした場合に生じる他の
領域の色情報の値と前記調整用画像の色情報の理論値と
の差として算出される値であることを特徴とする請求項
２記載の色調整方法。3. The correction value corresponds to a difference in color information generated between each of the regions. An adjustment image of the same color is displayed in each of the regions, and a predetermined region is a color of the adjustment image. 3. A value calculated as a difference between a value of color information of another area generated when color adjustment is performed so as to be equal to the information and a theoretical value of color information of the adjustment image. The color adjustment method described.
数の色をそれぞれ独立に調整する色調整装置において、 前記表示画面に含まれる複数の領域の各々に対して異な
る色情報を有する調整用画像を出力する調整用画像出力
部と、 この調整用画像出力部から出力された画像により表示さ
れた画像全体を取り込み、取り込んだ画像全体から前記
各領域の色情報を検出する色情報検出部と、 この色情報検出部に検出された各領域の色情報と対応す
る各領域の前記調整用画像の色情報の理論値とが等しく
なるように色調整を行う色調整部とからなることを特徴
とする色調整装置。4. A color adjustment device for independently adjusting a plurality of colors displayed on a display screen of an image display device, the adjustment device having different color information for each of a plurality of regions included in the display screen. An adjustment image output unit that outputs an image, a color information detection unit that captures the entire image displayed by the image output from the adjustment image output unit, and detects color information of each of the regions from the entire captured image. A color adjustment unit that performs color adjustment so that the color information of each area detected by the color information detection unit and the theoretical value of the color information of the adjustment image in each corresponding area are equal. Color adjustment device.
た所定の補正値により前記色調整を行うことを特徴とす
る。5. The color adjustment unit according to claim 1, wherein the color adjustment is performed using a predetermined correction value determined for each area.
情報の差分に相当する値であって、前記各領域のすべて
に同一色の調整用画像を表示させた場合に所定の一領域
を前記調整用画像の色情報と一致するように色調整した
場合に他の領域にそれぞれ生じる色情報の値と、前記調
整用画像の色情報の理論値との差として算出されること
を特徴とする。6. The correction value is a value corresponding to a difference in color information generated between the respective areas, and is a predetermined one area when an adjustment image of the same color is displayed in all of the respective areas. Is calculated as the difference between the value of the color information generated in each of the other areas when the color is adjusted to match the color information of the adjustment image and the theoretical value of the color information of the adjustment image. And
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| JP2000245942A JP3973827B2 (en) | 2000-08-14 | 2000-08-14 | Color adjustment method and apparatus |
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|---|---|---|---|
| JP2000245942A JP3973827B2 (en) | 2000-08-14 | 2000-08-14 | Color adjustment method and apparatus |
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| JP3973827B2 JP3973827B2 (en) | 2007-09-12 |
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