Method and device for image conversion from RGB signal to RGBW signal
An image conversion and signal technology, which is applied in the field of image conversion methods and devices from RGB signals to RGBW signals, can solve problems such as image distortion, and achieve the effects of improving brightness, improving picture contrast, and undistorting colors.
Active Publication Date: 2013-07-24
BOE TECH GRP CO LTD
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[0003] At present, the signal transmission interfaces such as VGA interface and DVI interface generally transmit RGB signals. If the RGB signals are directly applied to the RGBW display, the image will be distorted. Therefore, it is necessary to convert the RGB signals connected to the RGBW display.
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[0024] The specific implementation manners of the image conversion method and device from RGB signals to RGBW signals provided by the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
[0025] An image conversion method from an RGB signal to an RGBW signal provided in an embodiment of the present invention, such as figure 1 As shown, it specifically includes the following steps:
[0026] S101. Convert the received RGB input signals into corresponding RGB brightness input values;
[0027] S102. Determine the RGBW brightness output values respectively according to the positional relationship between the corresponding points of the RGB brightness input values in the chromaticity spectrum and the areas divided by RGBW;
[0028] S103. Convert the determined RGBW brightness output values into corresponding RGBW output signals and output them.
[0029] The specific implementation of each step in the image conve...
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The invention discloses a method and a device for image conversion from an RGB signal to an RGBW signal. Received RGB signals are respectively converted to corresponding RGB brightness input values; RGBW brightness output values are confirmed according to a position relation of corresponding points of the RGB brightness input values in a chromaticity atlas and zones divided by RGBW; and the confirmed RGBW brightness output values are respectively converted to corresponding RGBW output signals and the signals are output. The RGB brightness input values are converted to the RGBW brightness output values by means of confirming the corresponding points of the RGB brightness input values in the chromaticity atlas and colors are not distorted in the process of conversion from the RGB signal to the RGBW signal. In addition, when the RGBW brightness output values are confirmed according to the corresponding points of the RGB brightness input values in the chromaticity atlas, numerical values of the RGBW brightness output values can be adjusted according to requirements so that the brightness of a display device is integrally improved, and therefore a contrast ratio of a frame is improved.
Description
technical field [0001] The invention relates to the field of display technology, in particular to an image conversion method and device from RGB signals to RGBW signals. Background technique [0002] Currently, in image display devices such as liquid crystal panels (LCD) and organic electroluminescent display panels (OLED), red (R) sub-pixel units, green (G) sub-pixel units, and blue (B) sub-pixel The units form a pixel unit, and the color image is displayed by controlling the gray value of each sub-pixel unit to mix the required display color. Due to the low luminous efficiency of RGB three primary colors, it will restrict the product optimization of display devices composed of RGB three primary colors. Based on this, there are red (R) sub-pixel units, green (G) sub-pixel units, blue (B) sub-pixels A pixel unit composed of a unit and a white (W) sub-pixel unit to improve the luminous efficiency of an RGB display. [0003] At present, signal transmission interfaces such as...
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Login to View More IPC IPC(8): G09G5/02G09G5/10G09G3/20
CPCG09G5/02H04N5/14H04N9/67G09G2340/06G09G3/2003G09G2300/0452G06T7/90G06T3/20G06T11/001
Inventor 杨飞吴仲远宋丹娜
Owner BOE TECH GRP CO LTD