A retrieval method for tagged video files

A video file and video indexing technology, applied in the field of tag video file retrieval, can solve the problems of slow speed and unsatisfactory accuracy.

Active Publication Date: 2022-03-04
SICHUAN QIAODUOTIANGONG PRECISION EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can recognize faces and scenes, but the speed is slow and the accuracy is not satisfactory

Method used

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  • A retrieval method for tagged video files

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Embodiment Construction

[0034] The present invention will be further elaborated below.

[0035] The method provided by the invention is further described in conjunction with the accompanying drawings, including as figure 1 The following steps are shown:

[0036] S100: According to the time stamp of the video file, add a text label and a voiceprint label of the selected time node;

[0037] Step S100 includes the following specific steps:

[0038] S101: record the time label and text label of the time point;

[0039] S102: Obtain the human voice recorded within N seconds before and after the time point, and obtain and record the voiceprint feature of the human voice, wherein N is a natural number greater than 0;

[0040] S103: Match each voiceprint feature with each person's voice and personnel information to generate a voiceprint label;

[0041] S104: Form a one-to-one correspondence relationship between the text label with the time stamp and the voiceprint label with the time stamp according to t...

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PUM

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Abstract

The invention discloses a tagged video file retrieval method, which is characterized in that it comprises the following steps: S100: add a text tag and / or a voiceprint tag at a selected time node according to the time stamp of the video file; S200: add the text The label is associated with the corresponding time node and the corresponding video frame and indexed to generate a text database; the voiceprint label is associated with the corresponding time node and the corresponding video frame and indexed to generate a voiceprint database; S300: collect pending Retrieve the voice of the person, acquire and record the voiceprint feature of the voice of the person to be retrieved, and perform feature sampling on the voice, compare the similarity of the voiceprint feature in the index, obtain the index information with the highest similarity, and Obtain the information of the person to be retrieved, and form a retrieval basis; S400: Use voiceprint retrieval in the voiceprint database and / or text retrieval in the text database, and obtain retrieval results.

Description

technical field [0001] The invention belongs to the field of security and monitoring, and relates to a video file retrieval method, in particular to a tagged video file retrieval method. Background technique [0002] As an information recording method with the largest amount of information and the most comprehensive recording method, video has been widely used in many fields such as security, experience inheritance, data transfer, and entertainment. However, since the content of the video itself cannot be directly analyzed by a computer, it is difficult to accurately retrieve the original video based on the content of the recorded events. Its main feature is that the actual content of the video cannot be quantified and stored, so it cannot be indexed like text, and there is no way to accurately retrieve it. At present, the common retrieval methods include retrieval by video time and retrieval by comparing images recorded by video frames through image recognition technology....

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/73G06F16/71
Inventor 梁效宁杨博
Owner SICHUAN QIAODUOTIANGONG PRECISION EQUIP CO LTD
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