JP2013238656A5 - Display device and control method thereof - Google Patents
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- JP2013238656A5 JP2013238656A5 JP2012109791A JP2012109791A JP2013238656A5 JP 2013238656 A5 JP2013238656 A5 JP 2013238656A5 JP 2012109791 A JP2012109791 A JP 2012109791A JP 2012109791 A JP2012109791 A JP 2012109791A JP 2013238656 A5 JP2013238656 A5 JP 2013238656A5
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- 230000000875 corresponding Effects 0.000 claims description 18
- 239000011159 matrix material Substances 0.000 claims description 10
- 239000003086 colorant Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 230000001678 irradiating Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 4
- 230000001131 transforming Effects 0.000 claims 4
- 239000004973 liquid crystal related substance Substances 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 description 4
Description
本発明の表示装置は、
表示手段と、
前記表示手段に光を照射する発光手段と、
入力画像信号に基づいて、前記発光手段の発光輝度を制御する制御手段と、
前記制御手段で制御された発光輝度と、所定の発光輝度とを用いて、前記入力画像信号に輝度補正処理を施し、輝度補正画像信号を生成する輝度補正手段と、
前記輝度補正画像信号に色補正処理を施し、色補正画像信号を生成する色補正手段と、を備え、
前記色補正手段は、前記入力画像信号に基づく画像の前記所定の発光輝度に対応する色である目標色と、前記色補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差として、前記目標色と、前記輝度補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差よりも小さい値が得られるように、前記色補正画像信号を生成する
ことを特徴とする。
The Viewing device of the present invention,
Display means ;
A light emitting means for irradiating the display means with light;
Control means for controlling the light emission luminance of the light emitting means based on an input image signal ;
Luminance correction means for performing luminance correction processing on the input image signal using the light emission luminance controlled by the control means and a predetermined light emission luminance, and generating a luminance correction image signal;
The luminance correction image signal subjected to color correction processing includes a color correcting means for generating a color correction image signal, and
The color correction means includes a target color that is a color corresponding to the predetermined light emission luminance of the image based on the input image signal, and a color corresponding to the controlled light emission luminance of the image based on the color correction image signal. As the difference, the color correction image signal is generated so that a value smaller than a difference between the target color and a color corresponding to the controlled emission luminance of the image based on the luminance correction image signal is obtained. It is characterized by that.
本発明の表示装置の制御方法は、
表示手段と、前記表示手段に光を照射する発光手段と、を備える表示装置の制御方法であって、
入力画像信号に基づいて、前記発光手段の発光輝度を制御する制御ステップと、
前記制御ステップで制御された発光輝度と、所定の発光輝度とを用いて、前記入力画像信号に輝度補正処理を施し、輝度補正画像信号を生成する輝度補正ステップと、
前記輝度補正画像信号に色補正処理を施し、色補正画像信号を生成する色補正ステップと、
を有し、
前記色補正ステップでは、前記入力画像信号に基づく画像の前記所定の発光輝度に対応
する色である目標色と、前記色補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差として、前記目標色と、前記輝度補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差よりも小さい値が得られるように、前記色補正画像信号を生成する
ことを特徴とする。
Control method for Viewing device of the present invention,
A control method of a display device comprising a display unit, and a light emitting means for irradiating light to said display means,
A control step of controlling the light emission luminance of the light emitting means based on an input image signal ;
A luminance correction step of performing luminance correction processing on the input image signal using the light emission luminance controlled in the control step and a predetermined light emission luminance, and generating a luminance correction image signal;
A color correction step of performing a color correction process to generate a color corrected image signal to the luminance correction image signal,
I have a,
The color correction step corresponds to the predetermined light emission luminance of an image based on the input image signal.
As the difference between the target color that is the color to be adjusted and the color corresponding to the controlled emission luminance of the image based on the color-corrected image signal, the controlled color of the image based on the target color and the luminance-corrected image signal is controlled. The color-corrected image signal is generated so that a value smaller than a difference from a color corresponding to light emission luminance can be obtained .
そして、色補正部５は、式１に示すマトリクスＭ（第２の変換マトリクス）を作成する（Ｓ８）。
ここで、ＸＲ、ＹＲ、ＺＲは、Ｓ７で取得されたＲサブピクセルのＸ値、Ｙ値、Ｚ値である。ＸＧ、ＹＧ、ＺＧは、Ｓ７で取得されたＧサブピクセルのＸ値、Ｙ値、Ｚ値である。ＸＢ、ＹＢ、ＺＢは、Ｓ７で取得されたＢサブピクセルのＸ値、Ｙ値、Ｚ値である。
即ち、Ｓ５において、記憶部６に記憶されている測定値のうち、輝度補正画像信号の画素値に対応する各原色の測定値が選択される。Ｓ７において、選択した各原色の測定値に、処理対象の分割領域（処理対象の画素に対応する分割領域；処理対象の画素位置を含む分割領域）の発光輝度の変化率が乗算される。そして、Ｓ８において、乗算により得られた各原色の値を成分とする変換マトリクスが作成される。Ｓ８において作成される変換マトリクスは、画素値を、標準の発光輝度でバックライトを点灯させた場合における画面上の色の測定値に変換する変換マトリクスである。
Then, the color correction unit 5 creates a matrix M (second conversion matrix) shown in Expression 1 (S8).
Here, XR, YR, ZR is, X value of the R sub-pixels obtained by S 7, Y value, and Z value. XG, YG, ZG is, X values of the G subpixels obtained by S 7, Y value, and Z value. XB, YB, ZB is, X value of the acquired B sub-pixels S 7, Y value, and Z value.
That is, in S5, among the measurement values stored in the storage unit 6, the measurement values of the primary colors corresponding to the pixel values of the brightness correction image signal are selected. In S <b> 7, the measurement value of each selected primary color is multiplied by the change rate of the emission luminance of the processing target divided region (the divided region corresponding to the processing target pixel; the divided region including the processing target pixel position). Then, in S8, a conversion matrix having the primary color values obtained by multiplication as components is created. The conversion matrix created in S8 is a conversion matrix that converts pixel values into measured values of colors on the screen when the backlight is turned on with standard emission luminance.
Claims (15)
前記表示手段に光を照射する発光手段と、
入力画像信号に基づいて、前記発光手段の発光輝度を制御する制御手段と、
前記制御手段で制御された発光輝度と、所定の発光輝度とを用いて、前記入力画像信号に輝度補正処理を施し、輝度補正画像信号を生成する輝度補正手段と、
前記輝度補正画像信号に色補正処理を施し、色補正画像信号を生成する色補正手段と、を備え、
前記色補正手段は、前記入力画像信号に基づく画像の前記所定の発光輝度に対応する色である目標色と、前記色補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差として、前記目標色と、前記輝度補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差よりも小さい値が得られるように、前記色補正画像信号を生成する
ことを特徴とする表示装置。 Display means ;
A light emitting means for irradiating the display means with light;
Control means for controlling the light emission luminance of the light emitting means based on an input image signal ;
Luminance correction means for performing luminance correction processing on the input image signal using the light emission luminance controlled by the control means and a predetermined light emission luminance, and generating a luminance correction image signal;
The luminance correction image signal subjected to color correction processing includes a color correcting means for generating a color correction image signal, and
The color correction means includes a target color that is a color corresponding to the predetermined light emission luminance of the image based on the input image signal, and a color corresponding to the controlled light emission luminance of the image based on the color correction image signal. As the difference, the color correction image signal is generated so that a value smaller than a difference between the target color and a color corresponding to the controlled emission luminance of the image based on the luminance correction image signal is obtained. /> Viewing device you wherein a.
前記色補正手段は、前記輝度補正画像信号の前記各画素における前記複数の原色それぞれの階調値と、前記制御された発光輝度の前記所定の発光輝度に対する変化率とを用いて、前記色補正画像信号の前記各画素における前記複数の原色それぞれの階調値を算出することを特徴とする請求項１に記載の表示装置。 Each pixel of the display means is composed of a plurality of subpixels corresponding to a plurality of primary colors,
The color correction means uses the gradation value of each of the plurality of primary color in each pixel of the luminance correction image signal, and a rate of change with respect to the predetermined emission brightness of the controlled light emission luminance, the color correction Viewing apparatus according to claim 1, wherein the calculating the plurality of primary colors of the gradation values in each pixel of the image signal.
ことを特徴とする請求項１または２に記載の表示装置。 Said color correction means, said target color, as the color corresponding to the controlled emission luminance of an image based on the color corrected image signal are the same, to produce the color corrected image signal <br/> Viewing apparatus according to claim 1 or 2, characterized in that.
前記色補正手段は、前記輝度補正画像信号の前記各画素における前記複数の原色それぞれの階調値と、前記制御された発光輝度の前記所定の発光輝度に対する変化率とから決定される第１の変換マトリクス、及び、前記各画素における目標色を用いて、前記色補正画像信号を生成する
ことを特徴とする請求項３に記載の表示装置。 Each pixel of the display means is composed of a plurality of subpixels corresponding to a plurality of primary colors,
The color correction means is determined from a gradation value of each of the plurality of primary colors in each pixel of the luminance correction image signal and a change rate of the controlled light emission luminance with respect to the predetermined light emission luminance. transformation matrix, and, using said target color at each pixel, the display device according the <br/> to generate a pre-Symbol color corrected image signals to claim 3, characterized.
ことを特徴とする請求項４に記載の表示装置。 For each of the plurality of primary colors, and the tone value, to said display means to display the image based on the tone value, on the display means in a case where said at predetermined emission brightness to light the light emitting means Viewing apparatus according to claim 4, characterized in further comprising <br/> that the storage means for storing a correspondence relationship between the measured value of the color.
ことを特徴とする請求項５に記載の表示装置。The display device according to claim 5.
前記第２の変換マトリクスの逆行列を前記第１の変換マトリクスとして用いる
ことを特徴とする請求項５または６に記載の表示装置。 The color correction means, the measured values the corresponding to the gradation value of each of the plurality of primary colors at each pixel of the previous SL luminance correction image signal acquired from the storage unit, the acquired the rate of change in the measured value the multiplication value to create a second transformation matrix shall be the component,
Viewing apparatus according to claim 5 or 6, characterized by using an inverse matrix of the second transformation matrix as the first transformation matrix.
ことを特徴とする請求項１乃至請求項７のいずれか１項に記載の表示装置。 Viewing apparatus according to any one of claims 1 to 7, characterized in further comprising <br/> that a selection means for selecting whether to execute the color correction processing.
ことを特徴とする請求項８に記載の表示装置。 It said selection means, the display device according to claim 8, characterized in that selects whether to perform the color correction processing in accordance with a user operation.
ことを特徴とする請求項８に記載の表示装置。 It said selection means, the display device according to claim 8, saturation of the input image signal is larger than the threshold, and selects not to perform the color correction processing.
ことを特徴とする請求項８に記載の表示装置。 Said selecting means, when the input image signal has a pixel of a particular color, for at least the pixel, the display device according to claim 8, characterized in that choose not to perform the color correction processing .
ことを特徴とする請求項８に記載の表示装置。 Said selecting means, when the input image signal has a pixel of the particular object, for at least the pixel, the display device according to claim 8, characterized in that choose not to perform the color correction processing .
前記発光手段は、バックライトである The light emitting means is a backlight.
ことを特徴とする請求項１乃至請求項１２のいずれか１項に記載の表示装置。The display device according to claim 1, wherein the display device is a display device.
前記輝度補正処理と前記色補正処理は、前記複数の領域それぞれについて個別に行われる The luminance correction process and the color correction process are individually performed for each of the plurality of regions.
ことを特徴とする請求項１乃至請求項１３のいずれか１項に記載の表示装置。The display device according to claim 1, wherein the display device is a display device.
入力画像信号に基づいて、前記発光手段の発光輝度を制御する制御ステップと、
前記制御ステップで制御された発光輝度と、所定の発光輝度とを用いて、前記入力画像信号に輝度補正処理を施し、輝度補正画像信号を生成する輝度補正ステップと、
前記輝度補正画像信号に色補正処理を施し、色補正画像信号を生成する色補正ステップ
と、
を有し、
前記色補正ステップでは、前記入力画像信号に基づく画像の前記所定の発光輝度に対応する色である目標色と、前記色補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差として、前記目標色と、前記輝度補正画像信号に基づく画像の前記制御された発光輝度に対応する色との差よりも小さい値が得られるように、前記色補正画像信号を生成する
ことを特徴とする表示装置の制御方法。 A control method of a display device comprising a display unit, and a light emitting means for irradiating light to said display means,
A control step of controlling the light emission luminance of the light emitting means based on an input image signal ;
A luminance correction step of performing luminance correction processing on the input image signal using the light emission luminance controlled in the control step and a predetermined light emission luminance, and generating a luminance correction image signal;
A color correction step of performing a color correction process to generate a color corrected image signal to the luminance correction image signal,
I have a,
In the color correction step, a target color that is a color corresponding to the predetermined light emission luminance of the image based on the input image signal and a color corresponding to the controlled light emission luminance of the image based on the color correction image signal As the difference, the color correction image signal is generated so that a value smaller than a difference between the target color and a color corresponding to the controlled emission luminance of the image based on the luminance correction image signal is obtained. /> method of controlling a Viewing device you wherein a.
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| CN111542869B (en) * | 2018-11-16 | 2021-11-16 | 京东方科技集团股份有限公司 | Method for displaying image on dual-screen display panel and related apparatus |
| CN112748118B (en) * | 2020-12-29 | 2024-06-25 | 乐金显示光电科技(中国)有限公司 | Detection system and detection method for display panel |
| CN114420053B (en) * | 2021-12-01 | 2023-05-16 | 康佳集团股份有限公司 | Backlight partition brightness control method and device, terminal equipment and storage medium |
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| JP2008076687A (en) * | 2006-09-20 | 2008-04-03 | Sharp Corp | Liquid crystal display, and chroma-adjusting method for the liquid crystal display |
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