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A method and device for converting rgb to rgbw

A RGB value, original technology, applied in the field of video applications, can solve the problems of inconsistency, blurred images, color cast, chroma and saturation, etc., to achieve a good display effect.

Active Publication Date: 2016-07-06
TCL CORPORATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a method and device for converting RGB to RGBW, aiming to solve the problems that the existing conversion methods tend to cause blurred images, color casts, or inconsistent chroma and saturation on the display screen.

Method used

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  • A method and device for converting rgb to rgbw

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Embodiment 1

[0021] Such as figure 1 What is shown is a flow chart of a method for converting RGB to RGBW provided by an embodiment of the present invention. For convenience of description, only parts related to the embodiment of the present invention are shown.

[0022] In step S101, an RGB three-dimensional chromaticity space-to-W space model is established according to the original RGB values, and the original RGB value weighted combination formula for calculating the W value is obtained to calculate the W value.

[0023] In the embodiment of the present invention, after determining the grayscale number of the image, and normalizing the original RGB values, the three primary colors of the original RGB values ​​are respectively used as three mutually perpendicular vectors to establish a hexahedral RGB three-dimensional chromaticity space model, and the The straight lines where the three vectors of the three primary colors of the original RGB value are located are used as the three coordi...

Embodiment 2

[0071] Figure 6 The structural diagram of the device for converting RGB to RGBW provided by the embodiment of the present invention, for the convenience of description, only shows the part related to the embodiment of the present invention.

[0072] In the embodiment of the present invention, the device for converting RGB to RGBW includes:

[0073] The W value calculation unit 61 is used to establish an RGB three-dimensional chromaticity space-to-W space model according to the original RGB value, obtain the original RGB value weighted combination formula for calculating the W value, and calculate the W value.

[0074]In the embodiment of the present invention, after determining the grayscale number of the image, and normalizing the original RGB values, the three primary colors of the original RGB values ​​are respectively used as three mutually perpendicular vectors to establish a hexahedral RGB three-dimensional chromaticity space model, and the The straight lines where the...

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Abstract

The invention is applicable to the field of video application, and provides a method and a device for converting RGB (Red, Green and Blue) into RGBW (Red, Green, Blue and White). The method includes the following steps that an RGB three-dimensional color space-to-W space conversion model is established according to an original RGB value, an original RGB value weighted combination formula for calculating a W value is obtained, and the W value is calculated; according to the W value, an outputted RGB value is corrected. Because the W value is calculated by means of the weighted combination of the inputted original RGB value and the outputted RGB value is corrected according to the obtained W value, the differences between the saturation, brightness and image quality of images under an RGBW display mode and the saturation, brightness and image quality of original images are relatively small, and therefore the display effect is good.

Description

technical field [0001] The invention belongs to the field of video applications, in particular to a method and device for converting RGB to RGBW. Background technique [0002] With the development of information technology, various demands on LCD display devices for displaying images are also increasing. High transmittance, low power consumption, and good imaging quality have also become people's requirements for LCD screens. The traditional LCD display device is generally a three-color system of red (R), green (G) and blue (B), but the light transmittance and light mixing efficiency of the three-color system are relatively low, and the mixed white light shows color The performance is weak, resulting in a large energy consumption of the LCD screen. Therefore, today's LCD screens add a white sub-pixel (W) on the basis of traditional red (R), green (G) and blue (B). This type of LCD screen is called an RGBW LCD display. By using W sub-pixels with higher luminous efficiency ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64
Inventor 张登康
Owner TCL CORPORATION