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A tag-type video file retrieval method

A video file and video indexing technology, which is applied in the field of tagged video file retrieval, can solve problems such as unsatisfactory accuracy and slow speed

Active Publication Date: 2019-02-01
SICHUAN QIAODUOTIANGONG PRECISION EQUIP CO LTD
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  • Summary
  • Abstract
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  • Claims
  • Application Information

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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 tag-type video file retrieval method

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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 / or 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 t...

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Abstract

The invention discloses a tag type video file retrieval method, which is characterized in that the method comprises the following steps: S100: according to the time stamp of the video file, a character tag and / or a voice print tag of a selected time node are added; S200: associating the text label with the corresponding time node and the corresponding video frame, and establishing an index to generate a text database; Associating voiceprint tags with corresponding time nodes and corresponding video frames and establishing indexes to generate voiceprint databases; S300: collecting the voice ofthe person to be retrieved, obtaining and recording the voice print characteristics of the person to be retrieved, sampling the voice features, comparing the similarity of the voice print characteristics in the index, obtaining the index information with the highest similarity, obtaining the information of the person to be retrieved, and forming a retrieval basis; S400: Voiceprint retrieval is adopted in the voiceprint database and / or text retrieval is adopted in the text database, and retrieval results are obtained.

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 Applications(China)
IPC IPC(8): G06F16/73G06F16/71
Inventor 梁效宁杨博
Owner SICHUAN QIAODUOTIANGONG PRECISION EQUIP CO LTD
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