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An Approximate Video Retrieval Method Based on Improved Edit Distance

A technology for editing distance and video, applied in the field of pattern recognition and computer video processing, it can solve the problem of inaccurate results, and achieve the effects of high accuracy, reduced information loss and strong robustness.

Inactive Publication Date: 2018-12-18
BEIJING INSTITUTE OF TECHNOLOGYGY
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Problems solved by technology

[0017] The purpose of the present invention is to realize approximate video retrieval in natural scenes, and solve the problem of inaccurate results caused by the influence of complex scenes in existing approximate video retrieval algorithms, and propose an approximate video retrieval method based on improved edit distance, which can Realize approximate video retrieval in natural scenes, improve retrieval accuracy, and have better robustness for complex videos

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  • An Approximate Video Retrieval Method Based on Improved Edit Distance
  • An Approximate Video Retrieval Method Based on Improved Edit Distance
  • An Approximate Video Retrieval Method Based on Improved Edit Distance

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Embodiment Construction

[0056] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute conflicts with each other.

[0057] Such as figure 1 As shown, an approximate video retrieval method based on improved edit distance:

[0058] According to step 1, the key frame is extracted from the video in the video database;

[0059] Specifically, the method of extracting the key frame may adopt a method of uniform sampling, that is, a method of extracting a frame every few frames, or a method of extracting a key frame...

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Abstract

The invention relates to an approximate video retrieval method based on improved editing distance, belonging to the fields of computer video processing and pattern recognition. This method converts the video into a sequence of image frames, uses a score-based method to calculate the similarity between two frames, and reduces the information loss during the similarity calculation using the bag-of-words model. Using the improved edit distance to calculate the similarity between video sequences, in which by calculating the relative edit distance similarity between frame sequences, the query range in the retrieval process is effectively reduced; combined with the sequence similarity scoring method based on the dynamic programming mechanism, it effectively The wrong results are reduced, and the retrieval precision of the method is improved.

Description

technical field [0001] The invention relates to an approximate video retrieval method based on improved editing distance, belonging to the fields of computer video processing and pattern recognition. Background technique [0002] Vision is one of the most basic and effective ways for humans to perceive the world, and video is an information carrier based on human vision. Through video information, people can perceive the objective world intuitively, accurately and efficiently. With the development of information technology, especially the rise of Internet social networking sites, enterprises, institutions and users can create, edit and share videos more and more conveniently, resulting in a sharp increase in the number of videos on the Internet. In these videos, there will inevitably be Tons of approximate videos. Approximate videos refer to two video sources that have the same video source, but are different in file format, encoding parameters, luminosity (color, light an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06K9/62
CPCG06V20/41G06V20/46G06F18/23213
Inventor 赵清杰刘浩王浩
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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