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Image processing circuit and related image processing method

An image processing and circuit technology, applied in the field of image processing, can solve problems such as affecting display quality

Active Publication Date: 2021-07-02
MEDIATEK INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, when the image processing circuit 100 needs to enlarge the image, because the image enlargement operation will involve the interpolation operation, it is possible that the new pixel generated by the interpolation will just have the above-mentioned red component, green component, and blue component are the colors of (R1, G1, B1), at this time, if the user just inputs a color removal command to delete the color with the index value "10", these pixels generated by interpolation will be replaced by Black, which in turn affects the display quality

Method used

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  • Image processing circuit and related image processing method
  • Image processing circuit and related image processing method
  • Image processing circuit and related image processing method

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Embodiment Construction

[0027] Please refer to figure 2 , which is a schematic diagram of an image processing circuit 200 according to an embodiment of the present invention. Such as figure 2 As shown, the image processing circuit 200 includes a conversion circuit 210, a scaling circuit 220, a color conversion circuit 230, and a determination circuit 240; in addition, the image processing circuit 200 is coupled to a memory 250, which stores a color code table. In this embodiment, the image processing circuit 200 is set in a TV or a TV set-top box, and is used to receive the first image D1 encoded according to the palette coding technique to generate an output image D2" for a display panel For display or further image processing for the back-end circuit.

[0028] In the image processing circuit 200, the conversion circuit 210 is used to convert the index value into a color. In detail, the conversion circuit 210 first receives the first image D1, wherein the color of each pixel in the first image ...

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Abstract

An image processing circuit includes a determination circuit, a conversion circuit and a color removal circuit, wherein the determination circuit is used to determine a specific color different from all colors in a color code table; the conversion circuit is coupled to the A decision circuit for converting a first image with palette encoding into a second image with a color space according to the color code table, wherein pixels with a specific index value in the first image are converted are pixels with the specific color; the color removal circuit is coupled to the conversion circuit and used for removing the specific color from the second image.

Description

technical field [0001] The present invention relates to image processing, in particular to an image processing circuit capable of processing color removal operations and a related image processing method. Background technique [0002] Palette-based coding technology has been widely used in coding images. Its main concept is to use an index value to represent the color of each pixel, and when the display device wants to display these images, it will need A color code table is used to convert these index values ​​into image data coded in another color space (for example, RGB color space) before displaying. It is known that an image encoded by the palette encoding technique supports a color removal (key index) function, that is, the user can remove the color corresponding to the index value in the image by inputting an index value. [0003] figure 1 Shown is a schematic diagram of an image processing circuit 100 in the background art. Such as figure 1 As shown, the image pr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N19/186H04N19/70
CPCH04N19/186H04N19/70
Inventor 林晖智
Owner MEDIATEK INC