A Fast Image Retrieval Method for Video Scouting

An image retrieval and fast technology, applied in the field of video investigation, to shorten the query time, improve the efficiency and accuracy of feature calculation, and prevent target omission.

Active Publication Date: 2018-02-27
武汉众智数字技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the embodiments of the present invention is to provide a fast image retrieval method for video surveillance, to solve the problems of the prior art

Method used

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  • A Fast Image Retrieval Method for Video Scouting
  • A Fast Image Retrieval Method for Video Scouting
  • A Fast Image Retrieval Method for Video Scouting

Examples

Experimental program
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Embodiment 1

[0092] Embodiment 1 provided by the present invention is a specific application embodiment of a fast image retrieval method for video surveillance provided by the present invention. For example, when an electric car is stolen, the victim gives an image of the electric car and requests the police Personnel look for the whereabouts of electric vehicles. In order to find the suspected target vehicle, the staff needs to call out the videos of the nearby intersections within a certain period of time. These videos may only contain the target. It is difficult for the investigators to look closely at the eyes in a short time. Find the target, or even if there is a target, it may be missed due to long-term fatigue, the efficiency of case handling is low, and the accuracy is difficult to guarantee. At this time, the use of fast image retrieval technology based on video surveillance can quickly filter out target pictures to facilitate retrieval of suspicious targets. The specific impleme...

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Abstract

The present invention is applicable to the field of video reconnaissance, and provides a fast image retrieval method for video reconnaissance, including: obtaining a background model; obtaining a moving target; The probability of the pixel determines the amount of information in the picture, and the target image corresponding to the maximum amount of information in the picture is output as the target optimal image; the features of the target optimal image are calculated, and the features include HSV histogram, color autocorrelation map, color moment, wavelet moment and gradient direction histogram, according to the compressed sensing theory to reduce the dimensionality of the feature vector; calculate the similarity between each sample picture and the target optimal image according to each feature vector of the image, and sort the target of each sample picture according to the similarity, and obtain the retrieval result . By providing a new optimal picture selection strategy for moving objects, the information loss caused by tracking problems and invalid pictures is further reduced.

Description

technical field [0001] The invention belongs to the field of video investigation, in particular to a fast image retrieval method for video investigation. Background technique [0002] With the rapid development of science and technology, intelligent video surveillance technology is widely used in public security criminal investigation business. It has become an important means of criminal investigation technology to record the behavior of pedestrians and vehicles through video recording, and to find and track suspected targets from the video. In the actual process of handling a case, when the staff locks the suspect or the suspect vehicle, it is necessary to trace the suspect’s action route from the crime scene and nearby areas. However, it is very difficult to manually find the suspect from the massive surveillance video. The work is not only time-consuming but also easy to miss the target. The technology of the present invention provides technical support for investigator...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06K9/00G06T7/246
Inventor 张桥仇开金贺波涛
Owner 武汉众智数字技术有限公司
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