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Image processing method based on subpixel downsampling

An image processing and sub-pixel technology, applied in image communication, color signal processing circuits, instruments, etc., can solve problems such as color errors, achieve the effects of eliminating color errors, improving resolution, and solving color cast problems

Active Publication Date: 2017-01-25
XIAN NOVASTAR TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0031] Therefore, aiming at the defects and deficiencies in the prior art, the present invention provides an image processing method based on sub-pixel down-sampling to solve the problem of color generated by images containing text, lines and other similar graphics in the existing sub-pixel down-sampling technology. error problem

Method used

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  • Image processing method based on subpixel downsampling
  • Image processing method based on subpixel downsampling
  • Image processing method based on subpixel downsampling

Examples

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no. 1 example

[0069] 1. Objects that are processed against color errors in this embodiment:

[0070] An original image containing text, lines, and other similar graphics. Such text, lines, and similar graphics are mainly composed of horizontal lines, vertical lines, oblique lines, and other single-pixel-wide or double-pixel-wide white lines.

[0071] 2. The physical sub-pixel layout scheme for this embodiment:

[0072] Four physical sub-pixels are arranged in a rectangle, one red (R) physical sub-pixel, one blue (B) physical sub-pixel, two green (G) physical sub-pixels are arranged in a rectangle, and two green physical sub-pixels always on a diagonal, Figure 8 The four scenarios shown all fit this arrangement.

[0073] Three, the image processing mechanism in the present embodiment:

[0074] by Figure 8 The (a) arrangement in the four physical sub-pixel layout schemes shown is taken as an example. The process of using sub-pixel downsampling and anti-color error algorithm to process t...

no. 2 example

[0092] 1. Objects that are processed against color errors in this embodiment:

[0093] An original image containing text, lines, and other similar graphics. Such text, lines, and similar graphics are mainly composed of horizontal lines, vertical lines, oblique lines, and other single-pixel-wide or double-pixel-wide white lines.

[0094] 2. The physical sub-pixel layout scheme for this embodiment:

[0095] Three physical sub-pixels are arranged in a triangle, one red (R) physical sub-pixel, one blue (B) physical sub-pixel, and one green (G) physical sub-pixel are arranged in a triangle, and two adjacent physical sub-pixels There is a certain distance between them, with this arrangement as the unit, the periodic arrangement forms a triangular arrangement array, for example Figure 15 shown.

[0096] Correspondingly, the arrangement of the sampled sub-pixel color components obtained after sub-pixel downsampling of the input original image is Figure 16 shown. Additionally, af...

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Abstract

The invention relates to an image processing method based on subpixel downsampling. The image processing method based on subpixel downsampling includes the steps of (a), subjecting original images to subpixel downsampling to obtain a sampled subpixel color component of each original pixel so as to obtain multiple sampled subpixel color components; (b), subjecting the multiple sampled subpixel color components to color error resistant processing so as to obtain subpixel color components subjected to color error resistant processing for generating and outputting images. Particularly, in the step (b), as for similar graphs such as lines and characters in the original images, specific judgment conditions added after subpixel downsampling are used for judgment and then color complementing is conducted, thus, resolution can be enhanced greatly, color errors can be eliminated, and a color cast problem such as excessive color complementing or lines due to a color complementing mechanism in the prior art is solved.

Description

technical field [0001] The invention relates to the technical field of image processing and display, in particular to an image processing method based on sub-pixel downsampling. Background technique [0002] Display technology is one of the most critical parts of the technology contained in the information industry. LED (Light Emitting Diode, light-emitting diode) display system, as a new display technology, is gradually accepted by the market due to its advantages of energy saving, environmental protection, and high brightness. It is used in urban media, urban transportation and other fields. The pursuit of display quality such as high-resolution display is the constant pursuit of the LED display industry. [0003] 1) Most of the existing LED display screens use three-color display technology, and the traditional full-pixel sampling technology is only used to improve the resolution, so the resolution is mainly increased by increasing the density and scale of physical pixel...

Claims

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Application Information

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IPC IPC(8): H04N9/64H04N1/60G09G3/20G09G3/32
Inventor 袁胜春赵小明杨欢滕瑞玲周梦姣
Owner XIAN NOVASTAR TECH
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