Claims (8)
一種將顯示器面板之白色亮度參數導入依據顯示器面板的白色光學特性計算灰階白平衡增益值以提高其灰階白平衡調校精準度之方法，該方法係應用於一顯示器，且包括下列步驟：分別設定一理想白色、一紅色、一綠色及一藍色之色度座標值及亮度值，並各別換算成三刺激值；於該面板上顯示數個不同灰階值之影像畫面，並以量測裝置量測該面板，以分別獲得該顯示器於該面板所呈現之一原始白色的三刺激值、灰階值為零之一背景畫面的一組背景刺激值，以及複數個不同灰階值的白色影像之複數個亮度參數；將該理想白色、該紅色、該綠色、該藍色及該原始白色的三次激值分別扣除該組背景刺激值，以分別獲得一組第一修正刺激值、一組第二修正刺激值、一組第三修正刺激值、一組第四修正刺激值及一組第五修正刺激值；依據格拉斯曼配色定律，求出由該組第二修正刺激值、該組第三修正刺激值及該組第四修正刺激值混合成該組第一修正刺激值所需之一第一混合比例；依據格拉斯曼配色定律，求出由該組第二修正刺激值、該組第三修正刺激值及該組第四修正刺激值混合成該組第五修正刺激值所需之一第二混合比例；依據該第一混合比例及該第二混合比例之比值求出一組增益常數；及
由該等複數個亮度參數求出該面板之一灰階亮度曲線值，並以該灰階亮度曲線值修正該組增益常數，以求得一組調校增益值。
A method for introducing a white brightness parameter of a display panel into a gray scale white balance gain value according to a white optical characteristic of the display panel to improve the gray scale white balance adjustment accuracy, the method is applied to a display, and includes the following steps: Set a chromaticity coordinate value and a brightness value of an ideal white, a red, a green, and a blue color, respectively, and convert them into tristimulus values; display a plurality of image images of different grayscale values on the panel, and The measuring device measures the panel to obtain a set of background stimulus values of a primary white tristimulus value, a grayscale value of one of the background images, and a plurality of different grayscale values respectively displayed on the panel. a plurality of brightness parameters of the white image; the three values of the ideal white, the red, the green, the blue, and the original white are respectively subtracted from the set of background stimulus values to obtain a set of first corrected stimulus values, a set of second modified stimulus values, a set of third modified stimulus values, a set of fourth modified stimulus values, and a set of fifth modified stimulus values; according to Glassman's color matching law, And a first mixing ratio required for the second modified stimulation value, the third modified stimulation value, and the fourth modified stimulation value of the group to be mixed into the first modified stimulation value of the group; according to Grassmann's color matching law, Determining, according to the first mixing ratio, a second mixing ratio required for the second modified stimulation value, the third modified stimulation value, and the fourth modified stimulation value of the group to be mixed into the fifth modified stimulation value of the group; And a ratio of the second mixing ratio to obtain a set of gain constants; and
A gray scale brightness curve value of the panel is obtained from the plurality of brightness parameters, and the set of gain constants is corrected by the gray level brightness curve value to obtain a set of adjustment gain values.
如請求項1所述之方法，係依下列步驟分別設定該理想白色、該紅色、該綠色及該藍色之三刺激值：選定目標色溫之白色點的色度座標值為該理想白色之色度座標值；選定色度座標圖上的三個色點之色度座標值，分別做為該紅色、該綠色及該藍色之色度座標值；針對該等色點分別給予一亮度值；及依據國際照明協會所制定的表色系統轉換公式，分別求得該理想白色、該紅色、該綠色及該藍色之三刺激值。
According to the method of claim 1, the stimulating value of the ideal white, the red, the green, and the blue is respectively set according to the following steps: the chromaticity coordinate value of the white point of the selected target color temperature is the ideal white color. Coordinate value; the chromaticity coordinate values of the three color points on the selected chromaticity coordinate map are respectively used as the chromaticity coordinate values of the red, the green and the blue; respectively, a brightness value is given for the color points; And according to the color scheme conversion formula formulated by the International Lighting Association, the three white stimulus values of the ideal white, the red, the green and the blue are respectively obtained.
如請求項2所述之方法，係將該組增益常數之各原色的增益常數，分別取該灰階亮度曲線值的倒數次方，以透過該灰階亮度曲線值修正該組增益常數之各原色的增益常數。
The method of claim 2, wherein the gain constants of the primary colors of the set of gain constants are respectively taken to be the inverse of the grayscale luminance curve values, and the sets of gain constants are corrected by the grayscale luminance curve values. The gain constant of the primary color.
如請求項3所述之方法，係先將該組增益常數正規化，再藉由該灰階亮度曲線值修正該組增益常數。
The method according to claim 3, wherein the set of gain constants is normalized, and the set of gain constants is corrected by the grayscale luminance curve value.
如請求項3所述之方法，係先以該灰階亮度曲線值修正該組增益常數，並求得該組調校增益值，再將該組調校增益值予以正規化。
The method according to claim 3, wherein the set of gain constants is first corrected by the grayscale brightness curve value, and the set of adjusted gain values is obtained, and the set of adjusted gain values is normalized.
如請求項4或5所述之方法，尚包括：將該組調校增益值予以放大，並取最相近之一組整數做為該組
調校增益值之各原色的調校增益值。
The method of claim 4 or 5, further comprising: amplifying the set of adjustment gain values, and taking the most similar set of integers as the group
Adjust the gain value of each primary color of the gain value.
如請求項6所述之方法，尚包括：將該組調校增益值寫入該顯示器之一記憶體中，以令該顯示器能依據該組調校增益值，對後續輸入至該顯示器之輸入訊號進行增益補償。
The method of claim 6, further comprising: writing the set of adjustment gain values into a memory of the display, so that the display can input the subsequent input to the display according to the set of adjustment gain values. The signal is gain compensated.
如請求項6所述之方法，尚包括：將該組調校增益值寫入一色彩描述檔中，並將該色彩描述檔提供予一電子裝置，以令該電子裝置與該顯示器相連接時，該電子裝置能根據該色彩描述檔之內容修正其發送至該顯示器之影像訊號。
The method of claim 6, further comprising: writing the set of adjustment gain values into a color description file, and providing the color description file to an electronic device to connect the electronic device to the display The electronic device can correct the image signal sent to the display according to the content of the color profile.