Quick image search method for video investigation

An image retrieval, fast technology, applied in the field of video surveillance, to achieve the effect of shortening the query time, reducing information loss, and preventing target omission

Active Publication Date: 2015-06-03
武汉众智数字技术有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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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

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  • Quick image search method for video investigation
  • Quick image search method for video investigation
  • Quick image search method for video investigation

Examples

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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 invention is suitable for the field of video investigation, and provides a quick image search method for video investigation. The quick image search method comprises the following steps: obtaining a background model; obtaining a moving target; obtaining a candidate target matching pair, and completing the tracking processing of the moving target; determining the information amount of the picture according to the probability of each pixel in a target image, and taking the target image corresponding to the maximum value of the information amount of the picture as the output of an optimal target image; calculating the characteristics of the optimal target image, and carrying out dimensionality reduction on characteristic vectors according to a compressive sensing theory, wherein the characteristics include HSV column diagram, color autocorrelogram, color moment, small wave torque and gradient direction column diagram,; calculating the similarity of sample pictures and the optimal target image according to the characteristic vectors of the image, and carrying out target ranking on the sample pictures according to the similarity so as to obtain the search result. By providing a novel moving target optimal picture selection strategy, the information loss caused by tracking problem and invalid picture selection 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 Applications(China)
IPC IPC(8): G06K9/00G06T7/20
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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