Image display method based on sub-pixel downsampling
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An image display, sub-pixel technology, applied in the direction of color signal processing circuits, etc., can solve problems such as color errors, and achieve the effect of eliminating color errors, solving color cast problems, and improving resolution
Active Publication Date: 2017-01-18
XIAN NOVASTAR TECH
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[0031] Therefore, aiming at the defects and deficiencies in the prior art, the present invention provides an image display 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
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no. 1 example
[0064] 1. Objects for anti-color error processing in this embodiment:
[0065] The original image containing text, lines and other similar graphics, such text, lines and other similar graphics are mainly composed of horizontal lines, vertical lines, diagonal lines and other single-pixel wide or double-pixel wide white lines.
[0066] 2. The physical sub-pixel layout scheme for this embodiment:
[0067] Four physical sub-pixels are arranged in a rectangle, one red (R) physical sub-pixel, one blue (B) physical sub-pixel, and two green (G) physical sub-pixels are arranged in a rectangle, and two green physical sub-pixels are arranged in a rectangle. always on a diagonal, Figure 8 The four cases shown fit this arrangement. In addition, it can be understood that the rectangular arrangement of the four physical sub-pixels is, for example, an arrangement scheme of LED light points on an LED display screen, that is, a rectangular arrangement of four lights.
[0068] 3. The image p...
no. 2 example
[0090] 1. Objects for anti-color error processing in this embodiment:
[0091] The original image containing text, lines and other similar graphics, such text, lines and other similar graphics are mainly composed of horizontal lines, vertical lines, diagonal lines and other single-pixel wide or double-pixel wide white lines.
[0092] 2. The physical sub-pixel layout scheme for this embodiment:
[0093] A triangular arrangement of three physical sub-pixels is adopted, 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 are arranged in a triangle. There is a certain distance between them, and with this arrangement as the unit, the periodic arrangement constitutes a triangular arrangement array, for example Figure 15 shown. In addition, it can be understood that the triangular arrangement of the three physical sub-pixels is, for example, an arrangement scheme of L...
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Abstract
The invention relates to an image display method based on sub-pixel downsampling. The method comprises the steps that (i) an input original image is received; (ii) Gamma transforming is carried out on the original image to acquire an original image after Gamma transforming; (iii) sub-pixel downsampling is carried out on the original image after Gamma transforming to acquire a number of sampled sub-pixel color components; (iv) anti-color-error-processing is carried out on a number of sampled sub-pixel color components to acquire a number of anti-color-error-processed sub-pixel color components; (iv) Gamma transforming is carried out on a number of anti-color-error-processed sub-pixel color components to acquire a target image; and (vi) the target image is output to a target display screen. Particularly, in step (iv), lines, characters and similar patterns in the original image are judged by adding a specific judgment condition after sub-pixel downsampling, and then color complementing is carried out; the resolution can be improved to a great extent, and color errors are eliminated; and the problem of color cast, such as color over-complementing or line over-complementing, which is caused by 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 display 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 pixels. ...
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