Alternate line eliminating process method based on motion detection

Abstract

The invention relates to a de-interlacing processing method which converts an interlacing video signal into a non-interlaced video signal; in the method, the interpolated field is processed with the motion detection based on the pixel point and the interpolation is processed correspondingly according to the result of the motion detection. During the motion detection process, the field with the time closest to the current acquisition time is selected; the field with the position the same to the position of the scanning line of the current field is selected; the space-time correlation is comprehensively considered to judge the motion state of the interpolated point. When an interpolation filter is designed, the edge exists in the image is acquired through the multi-directional edge detection and the analysis of the fake edge and the weak edge; the interpolation is correspondingly processed according to the motion state and the edge direction of the pixel point; the field resulted from the interpolation and the interpolated field are interlaced to form the non-interlaced video image. Compared with the prior art, the de-interlacing processing method can improve the subjective quality of the video and have the advantages of fast processing speed and strong anti-noise capability.

Description

technical field [0001] The present invention relates to a de-interlacing processing method for converting an interlaced video signal into a progressive video signal, in particular to a method for performing motion detection by using the temporal correlation and spatial correlation of pixels, and performing interpolation according to the motion state of the pixels. Therefore, the de-interlacing processing method for converting interlaced video signals into progressive video signals belongs to the technical field of computer vision. Background technique [0002] A progressive video signal refers to a video image in which each frame is sequentially scanned row by row by an electron beam. The interlaced video signal refers to the video image obtained by scanning the odd-numbered lines first and then the even-numbered lines when the electron beam scans each frame. Interlaced video signals have been a widely used signal form for television systems since they reduce the bandwidth ...

AI Technical Summary

Problems solved by technology

[0009] In actual operation, there are usually multiple moving objects in the video scene, and the scene is often affected by various noises. These factors cause certain difficulties for deinterlacing processing.

If the de-interlacing process is not implemented properly, it will bring a series of adverse effects to the video scene, such as smearing, aliasing, etc., which will bring difficulties to subsequent video processing and analysis

At the same time, some systems such as video surveillance systems need to complete multiple processing tasks at the same time, and the computing resources available for deinterlacing processing are very limited

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