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Image processing method and device and display control card

An image processing device and image processing technology, applied to static indicators, instruments, etc., can solve problems such as false contours, achieve the effect of improving the phenomenon of false contours and improving the quality of picture display

Active Publication Date: 2020-07-14
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Therefore, an embodiment of the present invention provides an image processing method, an image processing device, and a display control card to solve the problem of false contours in images and achieve the technical effect of improving image brightness and image display quality

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  • Image processing method and device and display control card
  • Image processing method and device and display control card
  • Image processing method and device and display control card

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Embodiment Construction

[0017] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts fall within the protection scope of the present invention.

[0018] Specifically, the embodiments of the present invention aim at the technical problems existing in the prior art, and propose a direction-dependent error diffusion method, which greatly improves the false contour phenomenon existing in the prior art, improves the display quality of the picture, and thus improves the accuracy of the inherent grayscale display. The 16bit LED display can achieve the gray scale display effect of 18bit and above.

[0019] Specifica...

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Abstract

The invention provides an image processing method and device, and a display control card. Coefficient values of an error diffusion template in error diffusion directions are different because of different pixel points when the error diffusion template is employed for error diffusion after gray scale reduction processing for pixel points of one same input image, a false contouring phenomenon in the prior art can be substantially ameliorated, and frame display quality is improved.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an image processing method and device capable of improving image brightness and a display control card. Background technique [0002] With the development of science and technology, image and video data are more and more widely used due to the intuitiveness of conveying and expressing information. The ensuing problem is how to save more complete image and video information with less resource overhead. In order to solve the above problems, the prior art adopts the error diffusion method, wherein the principle of the error diffusion method is to quantize image pixels according to a certain scanning path, and then diffuse the quantization error to adjacent unprocessed pixels in a certain way. [0003] However, because the prior art distributes the error to the surrounding pixels according to a fixed ratio, without taking into account the edge information of the image, false contour...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09G3/20G09G3/32
CPCG09G3/2059G09G3/32
Inventor 杨树林杨城梁伟
Owner XIAN NOVASTAR TECH
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