A video zooming method based on a vector valued continued fraction interpolation in polar coordinates and a system thereof

A technology of continuous fraction interpolation and video scaling, which is applied to components of TV systems, TVs, color TVs, etc., and can solve problems such as distortion efficiency and low scaling results.

Active Publication Date: 2015-03-04
HEFEI UNIV OF TECH
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Problems solved by technology

[0003] The purpose of the present invention is to solve the defects of distortion and inefficiency in the scaling results in the prior art, an...

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  • A video zooming method based on a vector valued continued fraction interpolation in polar coordinates and a system thereof
  • A video zooming method based on a vector valued continued fraction interpolation in polar coordinates and a system thereof
  • A video zooming method based on a vector valued continued fraction interpolation in polar coordinates and a system thereof

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Embodiment Construction

[0083] In order to have a further understanding and understanding of the structural features of the present invention and the achieved effects, the preferred embodiments and accompanying drawings are used for a detailed description, as follows:

[0084] Such as figure 1 As shown, a kind of video scaling method based on vector continued fraction interpolation under polar coordinates described in the present invention comprises the following steps:

[0085] The first step is to initialize video feature analysis. Read the first frame image of the video, and judge whether the video is a grayscale video or a color video by analyzing the first frame image. If it is a color video, the color video is executed along the three color channels of R, G, and B respectively in the manner of a grayscale video; if it is a grayscale video, the image is directly processed.

[0086] The second step is to perform vector continued fraction interpolation scaling. By reading the image of the next f...

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Abstract

The invention relates to a video zooming method based on a vector valued continued fraction interpolation in polar coordinates and a system thereof. Compared with the prior art, the method solves issues of distortion and low efficiency of a zooming result. The method comprises the following steps: initiating a video feature analysis; performing vector valued continued fraction interpolation zooming, configuring a vector control network by reading of the next frame of image of the video, configuring a rational interpolation curve by the vector control network in combination with a vector valued continued fraction interpolation in the polar coordinates, implementing zooming of the image by the sampling of the interpolation curve, and computing an NT zooming image and a TN zooming image; obtaining a zooming result, setting [alpha] as a balancing factor and computing a zooming result, wherein the computing formula is as follows: Y= [alpha]*R1+(1-[alpha])*R2, the R1 is an NT zooming image, and the R2 is a TN zooming image; and detecting whether reading of video is completed, if yes, completing video zooming, if no, continuing the operation of zooming of the vector valued continued fraction interpolation. The invention improves the quality and the efficiency of video image zooming.

Description

technical field [0001] The invention relates to the technical field of video image processing, in particular to a video scaling method and system based on vector continued fraction interpolation under polar coordinates. Background technique [0002] Image and video scaling are essential tools in digital image processing, and its essence is to resample images to achieve image resolution conversion or scale conversion. At present, the scaling method provided by commercial software adopts the classic linear interpolation method, such as PHOTOSHOP, Firework, Soft and so on. The methods used by these software are simple and fast, but due to the linear interpolation technology used, various distortions such as mosaic and jagged will appear on the edge of the enlarged image. At this stage, many researchers have proposed different scaling strategies and achieved some success. However, the implementation of these methods requires some prior information of high-definition images, and...

Claims

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Application Information

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IPC IPC(8): H04N5/14
Inventor 檀结庆何蕾霍星
Owner HEFEI UNIV OF TECH
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