Image interpolation algorithm based on region consistency

An interpolation algorithm and consistency technology, applied in image data processing, graphic image conversion, computing and other directions, can solve the problems of occupying a lot of memory space, difficult to implement, and high computational complexity.

Active Publication Date: 2012-07-25
北京倚天升科技开发有限公司
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Problems solved by technology

[0007] For this reason, the technical problem to be solved by the present invention is that the image interpolation algorithm in the prior art has a high degree of computational complexity, takes up a lot of memory space, and is difficult to implement on hardware, thereby proposing an image interpolation algorithm with simple operation, good effect, and easy hardware implementation. interpolation algorithm

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  • Image interpolation algorithm based on region consistency
  • Image interpolation algorithm based on region consistency

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Embodiment 1

[0097] The specific implementation of the image interpolation algorithm based on regional consistency described in the present invention is given below, the basic idea is to first determine the position of the interpolation point in the original image, then use the threshold value to judge the area around the interpolation point, and then Determine the area to which the interpolation point belongs, and then use the interpolation formula to obtain the pixel value of the interpolation point, and finally output the interpolated image. The flow chart is as follows figure 2 shown. The image interpolation algorithm based on regional consistency of the present invention comprises the following steps:

[0098] (1) The original image is F(x, y), the enlarged image is H(x, y), and an interpolation point h(i, j) in the enlarged image is obtained;

[0099] (2) Use threshold judgment to divide the interpolation points into regions, and determine the region to which the interpolation poin...

Embodiment 2

[0107] The image interpolation algorithm based on regional consistency of the present invention comprises the following steps:

[0108] (1) The original image is F(x, y), the enlarged image is H(x, y), and an interpolation point h(i, j) in the enlarged image is obtained;

[0109] (2) Use threshold judgment to divide the interpolation points into regions, and determine the region to which the interpolation points belong, including:

[0110] 1, when the interpolation point h (i, j) is in the same column as the original pixel point, obtain the original pixel point f (x, y above the interpolation point, obtain the original pixel point f (x+1, below the interpolation point, y), set y1=|f(x, y)-f(x+1, y)|, t is the set threshold, where t is 100, and the unit is the pixel value. If y1

Embodiment 3

[0119] The image interpolation algorithm based on regional consistency of the present invention comprises the following steps:

[0120] (1) The original image is F(x, y), the enlarged image is H(x, y), and an interpolation point h(i, j) in the enlarged image is obtained;

[0121] (2) Use threshold judgment to divide the interpolation points into regions, and determine the region to which the interpolation points belong, including:

[0122] 1, when the interpolation point h (i, j) is in the same column as the original pixel point, obtain the original pixel point f (x, y above the interpolation point, obtain the original pixel point f (x+1, below the interpolation point, y), set y1=|f(x, y)-f(x+1, y)|, t is the set threshold value, here t is taken as 130, and the unit is the pixel value. If y1

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Abstract

The invention provides an image interpolation algorithm based on region consistency, and the algorithm comprises the following steps of: firstly confirming the positions of interpolation points in an original image; carrying out region division on the periphery of the interpolation points by means of the judgment of a threshold value, judging the regions to which the interpolation points belong, obtaining the pixel value of the interpolation points by virtue of an interpolation formula, and outputting the interpolated image. The technical problems of lower image quality, high computation complexity, more occupied internal memory and difficulty in realization based on hardware caused by inaccurate edge region division in the conventional interpolation algorithm can be solved. Compared with an edge adaptive algorithm, the algorithm provided by the invention has the advantages that on the premise that the image quality is not observably reduced, the complexity of the algorithm is greatly reduced, so that the interpolated image is better in visual effect, and therefore, the algorithm is an image-amplifying interpolation algorithm which is simple to operate, good in effect, and easy to realize based on hardware.

Description

technical field [0001] The invention relates to an image interpolation algorithm, in particular to an image interpolation algorithm based on regional consistency. Background technique [0002] Image processing technology refers to the technology of using computer to analyze images to achieve the desired results. The main content of image processing technology includes image compression, enhancement and restoration, matching, description and recognition, etc. Image is the main source for human to obtain and exchange information. Therefore, the application field of image processing involves all aspects of human life and work. With the rapid development of visual information, large-screen display technology is gradually developing, especially in the fields of traffic control and airport control. The use of large-screen splicing display technology can obtain better video display effects and a wider field of view, providing on-site monitoring. convenient. The demand for large-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/40H04N7/01
Inventor 赵旦峰杨大伟王博田铭
Owner 北京倚天升科技开发有限公司
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