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Image processing device and method

An image processing and image technology, applied in color signal processing circuits, cathode ray tube indicators, instruments, etc., can solve problems such as difficult saturation control and color deviation

Inactive Publication Date: 2009-12-09
QUANTA COMPUTER INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the color space section of each brightness is different, and different hues (angles) have different saturation ranges, the brightness gain value Gain-L is selected according to different brightness, and the hue gain value Gain-H is selected according to different hues, which will cause saturation Difficult to control, resulting in color deviation

Method used

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  • Image processing device and method
  • Image processing device and method
  • Image processing device and method

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Experimental program
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Embodiment Construction

[0039] see Figure 4 , Figure 4 A functional block diagram of the image processing device 3 according to the first preferred embodiment of the present invention is shown. In this embodiment, the image processing apparatus (Image processing apparatus) 3 is used to adjust the saturation (Saturation) S of the input image (Input image) 5, and the input image 5 has a brightness (Lightness) L and a hue (Hue) H. In this embodiment, the input image 5 conforms to the RGB color space (the first color space).

[0040] like Figure 4 As shown, the image processing device 3 includes a first converter (Converter) 30, a second converter 32, a third converter 34, a fourth converter 36, a fifth converter 38, a first processing A processing unit 40 , a second processing unit 42 and a third processing unit 44 . The third processing unit 44 is coupled to the first processing unit 40 and the second processing unit 42 respectively. The second converter 32 is coupled to the first processing un...

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Abstract

The invention discloses an image processing device for adjusting the saturation of an input image. The input image also has brightness and hue. The image processing device includes a first processing unit, a second processing unit, a third processing unit and a first converter. The first processing unit determines the gain curve according to the brightness and hue of the input image and the first comparison table. The second processing unit determines the normalized limit gain value according to the brightness and hue of the input image and the second comparison table, and multiplies the saturation value of the input image by the normalized limit gain value to generate normalized saturation. The third processing unit determines a set of gain parameters according to the gain curve and the third comparison table, and determines a saturation gain value according to the normalized saturation and the gain parameters. The first converter adjusts the saturation of the input image according to the saturation gain value.

Description

technical field [0001] The invention relates to an image processing device and method thereof, which are used in a display system (Displaysystem) to adjust the saturation (Saturation) of an input image (Input image). Background technique [0002] In current monitors, users can adjust the saturation of colors through a window screen operating system (On screen display, OSD), so as to enhance the display effect of images. see Figure 1 to Figure 2B , figure 1 A functional block diagram of a conventional image processing device 1 is shown. Figure 2A show figure 1 A schematic diagram of the middle brightness gain value comparison table 160a. Figure 2B show figure 1 A schematic diagram of the middle tone gain value comparison table 160b. The image processing device 1 includes a first color space converter 10, a hue converter 12, a first saturation converter 14, processing units 16a, 16b, multipliers 18a, 18b, a second saturation converter 20, and a second color space C...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/64G09G5/02
Inventor 李信宏柳昀呈黄煜翔
Owner QUANTA COMPUTER INC