Video shot detection method based on histogram improvement and clustering algorithm

Abstract

The invention discloses a video shot detection method based on histogram improvement and a clustering algorithm, and relates to image processing techniques. According to the method, the histogram improvement and the clustering algorithm are adopted to compute an intersection of histograms of two adjacent frames of images, and whether a shot change happens is judged according to histogram similarity; if the shot change happens, secondary detection on a shot boundary of the intersection of the histograms of the two adjacent frames of images is carried out by utilizing interframe gray scale / color difference values, pixel difference value computation on each block is carried out respectively by adopting non-uniform block weighting processing, pixel difference values and preset block frame differential threshold values are compared to obtain identification variables, the identification variable of each block is weighted and summarized, and the weighing and summarizing values and the preset block differential threshold values are compared to carry out shot detection. The video shot detection method improves shot detection accuracy and solves the problems of shot false detection, frame number discontinuity, and the like.

Description

technical field [0001] The invention relates to image processing technology, in particular to a video lens detection technology. Background technique [0002] A group of continuous image frames in the time domain constitutes a video stream, but because the video frame rate is generally large, a very short video has a large number of image frames, and adjacent image frames have certain correlations in visual features , so the method of content-based image retrieval cannot be directly applied in the field of video retrieval. Only when the video is structured and indexed and summarized for the video, and a linear structure about the video content is formed, can the fast browsing and retrieval of video data be effectively realized. Video structuring includes shot segmentation, etc. Shot segmentation, also known as shot change detection, is the basis of video structure hierarchy. It is required to avoid the influence of external factors on shot detection and segmentation, and di...

AI Technical Summary

Problems solved by technology

[0068] The present invention aims at the existing algorithms for video detection, which may lead to misdetection of shots, discontinuous frame numbers and other problems. For the shot detection part, an image detection method based on an improved histogram and an improved clustering algorithm is proposed

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