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Hue regulating device

A color tone adjustment and color tone technology, which is applied in the direction of color signal processing circuit, etc., can solve the problem of color gap and other problems, and achieve the effect of image quality improvement and image smoothness

Inactive Publication Date: 2008-02-06
MARKETECH INT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When adjusting the hue of a certain color axis in an image, the existing technology is to rotate all the hues of a color axis by the same angle, resulting in a gap or an undesired outline of the adjusted color

Method used

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Embodiment Construction

[0029] Please refer to FIG. 4A . FIG. 4A is a functional block diagram of a display system 1 according to a preferred embodiment of the present invention. As shown in FIG. 4A , the display system 1 includes color space conversion devices 10 a , 10 b , a hue division device 12 , a brightness adjustment device 14 , a hue adjustment device 16 , and a saturation adjustment device 18 .

[0030] The present invention is applicable to all color spaces in which brightness and color are separated, such as YCbCr, YUV, YIQ, HSI, HSV, CIELab and the like. In this embodiment, the color space conversion device 10a of the display system 1 first converts the image signal from the original color space (such as RGB) to a color space (such as CIELab) that separates brightness and color, and then obtains the brightness and hue of the image. And saturation information, where the range of hue is 0°-360°. In other words, when an image signal composed of N pixels (Pixel) is input to the display syst...

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Abstract

The present invention discloses a hue adjusting device and different hue angle can rotate at a different rotating angle when a user wants to adjust the hue contained in a color axis. Thereby, the adjusted color does not have chromatic aberration and unwanted outline, and also the image is smooth while the quality of the adjusted image can be improved.

Description

technical field [0001] The present invention relates to a hue adjusting device, and in particular, relates to a hue adjusting device capable of adjusting different hues in the same color axis at different rotation angles. Background technique [0002] When viewing an image, the user often adjusts the color of a part of the picture, for example, adjusts the blue sky to be bluer, or adjusts the green area to be greener. Generally speaking, the parameters that can be adjusted in the image include brightness (Lightness), hue (Hue) and saturation (Saturation). For most applications, it is more appropriate to divide colors by hue. [0003] When processing the color of an image, the signal of the image must be converted from the original color space (such as RGB) to a color space (such as YCbCr, YUV, CIELab, etc.) that separates brightness (commonly known as Y) and color (commonly known as C). Then get the brightness, hue and saturation information of the image. Please refer to ...

Claims

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Application Information

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IPC IPC(8): H04N9/64
Inventor 许凯翔单益嘉蔡璨鸿高旭佳
Owner MARKETECH INT
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