Edge adaptive de-interlacing interpolation method

An interpolation method and self-adaptive technology, applied in color TV parts, TV system parts, standard conversion and other directions, can solve the problems of easy introduction of isolated point noise, easy generation of sawtooth, severe flicker, etc., and achieve good edge protection. effect of ability

Active Publication Date: 2012-06-13
SICHUAN PANOVASIC TECH
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Problems solved by technology

[0005] 1. Insufficient selection of direction may easily produce sawtooth;
[0006] 2. Small-angle interpolation is easy to introduce isolated point noise because the selected pixels are far apart;
[0007] 3. Image areas with rich details flicker after edge interpolation

Method used

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  • Edge adaptive de-interlacing interpolation method
  • Edge adaptive de-interlacing interpolation method
  • Edge adaptive de-interlacing interpolation method

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Embodiment Construction

[0029] Such as figure 2 The interpolation method of edge-adaptive deinterlacing of the present invention shown, comprises steps:

[0030] a. By calculating the magnitude of the correlation of the neighboring pixels of the pixel to be interpolated P(i, j) in each direction, its upper and lower lines are the original input 15×2 pixel points. Determine the directional characteristics of the area where the pixel point P(i, j) to be interpolated is located, and then obtain the initial correlation value from the sum of the difference values ​​of the pixel pairs in each direction:

[0031] diff ( k ) = Σ - a a | P ( i - 1 , j + k + a ) - P ...

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Abstract

The invention relates to an edge adaptive de-interlacing interpolation method. The method comprises the following steps of: a, calculating the sum of the difference value of each direction pixel pair to obtain a primary correlation value; b, correcting and compensating the correlation value; c, preferentially selecting a central direction; d, according to the texture type of an area in which a present pixel point is, comparing the edge strength of the present pixel point with a set threshold to obtain the final interpolation direction; e, obtaining a candidate pixel value of a present interpolation point according to the interpolation direction; and f, performing median filtering on an upper point and a lower point of the present interpolation point pixel, and the candidate pixel value obtained in the step e to obtain the final interpolation pixel. By the edge adaptive de-interlacing interpolation method, high edge protection ability is endowed to an image pixel, and a de-interlacing image with a smooth edge and no flash of details can be obtained.

Description

technical field [0001] The invention relates to an image deinterlacing method, in particular to an interpolation method based on edge adaptive deinterlacing. Background technique [0002] Due to the limitation of the transmission bandwidth, the TV signals sent by the TV station are not complete images, but are sent according to the rule of first legendary lines and then even lines. Such signals are interlaced video signals. However, with the continuous development of digital signal processing technology and the emergence of wide-screen flat-panel TVs, people's requirements for TV display quality are getting higher and higher. Serious problems such as screen flicker and jaggedness in the interlaced signals sent by TV stations can no longer satisfy the audience. Therefore, the de-interlacing technology was created to solve the backward interlaced video signal and the increasing visual requirements of consumers. [0003] The de-interlacing method is divided into linear algorit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N7/01H04N5/14
Inventor 刘成强刘强鲁国宁
Owner SICHUAN PANOVASIC TECH
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