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Picture element data processing method

A technology of pixel data and processing method, applied in image communication, TV, color TV components and other directions, can solve the problems of uneven image display, uneven image boundary, etc., and achieve the effect of ensuring uniformity and simplifying procedures.

Inactive Publication Date: 2008-10-29
SICHUAN CHANGHONG ELECTRIC CO LTD
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  • Abstract
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  • Application Information

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Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a pixel data processing method for the problem of uneven image display when processing boundary pixels and other pixels in the prior art, which can solve the problem of uneven image boundary and other parts. Ordinary static, dynamic video images and special test images can achieve consistent picture processing effects, and the hardware implementation is not complicated

Method used

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Embodiment 1

[0029] Assume that the pixel f to be processed is located at figure 1 top left corner of the matrix shown, as in figure 2 Pixel f44 in . In this case, the pixel g is distributed outside any two intersecting boundaries of the matrix (the upper boundary and the left boundary of the matrix). In the figure, the dotted line square represents the pixel g, and the solid line square represents the pixel in the matrix. According to the processing algorithm of the pixel f44, a 7×7 rectangular neighborhood with the pixel f44 as the center is selected. There are 48 pixels in this neighborhood, except for the 15 pixels in the matrix represented by the squares with solid lines, there are 33 pixels g represented by the squares with dashed lines outside the matrix. Since the pixel g does not actually exist, it needs to be filled with the pixels in the matrix, and its corresponding value is used for calculation. The specific filling method is as follows:

[0030] 1. in figure 2 In , tak...

Embodiment 2

[0034] In this example, except that the selected neighborhood is an X-shaped neighborhood, other situations are the same as in Embodiment 1, such as Figure 5 shown. It can be seen that in the neighborhood of pixel f44, only pixel f55, pixel f66, and pixel f77 are in the matrix, and the above method can be used to fill other pixels g outside the matrix in the neighborhood, and then perform corresponding algorithm processing.

Embodiment 3

[0036] The neighborhood selected in this example is a cross-shaped neighborhood, see Figure 6 . For the pixel g outside the matrix, the same method can be used for filling. The other conditions of this example are the same as in Example 1.

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Abstract

The invention relates to the digital image signal processing technology, in particular to a processing method which is applied to the matrix operation of image edge pixels. The invention discloses a pixel data processing method based on the defect of uneven image display when the prior art carries out the treatment to the edge pixels and other pixels. The technical proposal of the invention is that when pixels g are distributed outside a pixel matrix in the neighborhood of pixels f to be processed, the values of corresponding pixels in the matrix are served as the values of the pixels g according to the locations of the pixels g and based on the principle that the locations are symmetrical to the locations of the pixels f by row / column, and then the corresponding processing is carried out. The method of the invention is applied to the image processing field and can carry out the same treatment to the edge pixels and the pixels of other parts to achieve a uniform image processing effect. In particular, the pixels with symmetrical locations are selected to fill up the default pixels, which can simplify the programs and guarantee the uniform processing effect.

Description

technical field [0001] The invention relates to a digital image signal processing technology, in particular to a processing method when matrix operation is performed on image boundary pixels. Background technique [0002] A digital image is composed of limited pixels (pixel), and the value of the pixel (pixel data) reflects the relevant information of a specific position in the image (such as color, brightness, etc.). In image processing technology, a discrete data structure such as a matrix is ​​usually used to express an image. For example, a two-dimensional matrix can be used to represent a digital image, which can be a frame of a still image or a moving image. The elements in the matrix are the values ​​of pixels, which are integers, corresponding to the quantization level of image information, such as the brightness value of image pixels. , gray value, chroma value, contrast value, sharpness value, etc., can also be the Y channel data of the image YUV space. In the pi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/14H04N5/208H04N5/21H04N17/00
Inventor 李珣
Owner SICHUAN CHANGHONG ELECTRIC CO LTD
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