A Video Retrieval Method for Quickly Locating Unexpected Cases

A case and video technology, applied in the field of intelligent security, can solve the problems of wasting time and energy, and the inability to quickly locate the desired viewing position when viewing video surveillance images, so as to save storage space and quickly detect emergencies

Active Publication Date: 2019-09-20
NANJING COLLEGE OF INFORMATION TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: under the prior art, it is impossible to quickly locate the desired viewing position when viewing video surveillance images, which wastes time and energy

Method used

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  • A Video Retrieval Method for Quickly Locating Unexpected Cases
  • A Video Retrieval Method for Quickly Locating Unexpected Cases
  • A Video Retrieval Method for Quickly Locating Unexpected Cases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0016] Embodiment A kind of video retrieval method of rapidly locating sudden case, comprises the following steps:

[0017] 1) Set up video recording equipment near the entrance and exit of the selected area;

[0018] 2) Collect the face images of specific groups of people entering and leaving the area through video recording equipment, enter the personal information corresponding to the face image, and set up a face database, which includes face images and their corresponding personal information, so The face image is taken when the face size reaches the set size K×L when the person approaches the video recording device;

[0019] 3) Real-time video recording, constantly comparing the average absolute error of the pixel gray value of the two frames of video images in the interval to determine whether a moving body enters the video monitoring area; when the moving body enters the video monitoring area, an inter-frame difference algorithm is used , to separate the moving body i...

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PUM

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Abstract

The invention discloses a video retrieval method for quickly locating a sudden case. According to the method, whether persons enter and leave a video monitoring area or not is judged by performing an inter-frame difference algorithm on monitoring video streaming, a motion area in a video image is extracted, if human faces are detected in the motion area and the size is changed to be K*L, shooting is performed, the shot human faces are compared with human faces in a database for recognition, and if the shot human faces can be recognized through comparison, entering time and leaving time of the persons are recorded; if human faces cannot be detected or cannot be matched with the human faces in the database, the image is reserved and numbered, the time is recorded, and a data inquiry table is generated by the aid of all results, so that a video segment can be located quickly and conveniently when a video is viewed.

Description

technical field [0001] The invention relates to a video retrieval method for quickly locating sudden cases, belonging to the field of intelligent security. Background technique [0002] In some shopping malls and office buildings, after get off work, there are very few people entering and leaving. When a case occurs and the video recording needs to be adjusted, it often requires a lot of manpower to watch it from the beginning, and no detail can be missed to find the clues of the crime. Not only is it very hard for the viewers, but it also wastes a lot of manpower and delays the time to solve the case. Contents of the invention [0003] The technical problem to be solved by the present invention is: under the prior art, the problem of wasting time and energy is that the viewing position cannot be quickly located when viewing the video surveillance image. [0004] In order to achieve the above object, the technical solution provided by the present invention is: a video re...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F16/783
Inventor 金明聂佰玲高燕袁迎春周波
Owner NANJING COLLEGE OF INFORMATION TECH
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