Suspicion vehicle search method based on sift characteristic

A technology of suspect vehicles and vehicles, which is applied in the field of vehicle identification, can solve the problems that the license plate is easily blocked or replaced intentionally, and the search failure of suspect vehicles, etc., to achieve the effect of increasing flexibility and practicability, and high accuracy of search and recognition

Inactive Publication Date: 2014-03-26
ZHONGKE UNITED AUTOMATION SCI & TECH WUXI
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Problems solved by technology

Although this method is relatively mature, the license plate is easily blocked or replaced on purpose
[0004] If the license plate of the

Method used

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  • Suspicion vehicle search method based on sift characteristic
  • Suspicion vehicle search method based on sift characteristic
  • Suspicion vehicle search method based on sift characteristic

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[0023] The present invention will be further described below in conjunction with specific drawings and embodiments.

[0024] Aiming at the defects of traditional suspect vehicle retrieval, the present invention proposes a suspect vehicle retrieval method based on sift features. For general vehicles, the license plate information can easily be replaced, but, such as figure 1 As shown, the annual inspection, insurance and / or environmental protection signs or iconic stickers pasted on the front window of the car, as well as some iconic objects (such as auspicious pendants, etc.) hanging on the front of the car, are difficult to replace.

[0025] As long as there are such landmark areas on the car body and these landmark feature areas are selected, these landmark feature areas that are difficult to be replaced or removed can be used for retrieval. For example, if there is a suspected car and the license plate information has been changed, we can choose the area that contains the annual...

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Abstract

The invention provides a suspicion vehicle search method based on the sift characteristic. The method comprises the steps of (a) suspicion vehicle characteristic zone inputting, wherein a symbolic characteristic zone on a suspicion vehicle which needs to be searched is selected; (b) suspicion vehicle sift characteristic extracting; (c) suspicion vehicle color information extraction; (d) to-be-searched vehicle characteristic zone sift characteristic extraction; (e) to-be-searched vehicle color information extraction; (f) color matching of a vehicle to be searched and the suspicion vehicle; (g) sift characteristic matching; and (h) searching result sorting, wherein the matching values of the similarity of all vehicle to be searched to the suspicion vehicle are subjected to full sorting from high values to low values, and according to the matching value sorting results, the pictures of the vehicles to be searched with output corresponding to the matching values are shown in sequence. According to the method, the suspicion vehicle can be effectively identified in a searching mode, and searching identifying accuracy is high.

Description

technical field [0001] The invention relates to the technical field of vehicle identification, in particular to a suspicious vehicle retrieval method based on SIFT features. Background technique [0002] The police or other government agencies usually set up many video surveillance devices, such as cameras, at road intersections. Vehicle images captured by cameras can be used for various monitoring purposes. [0003] Traditional suspect vehicle retrieval can only be retrieved by license plate. For the suspected vehicle, use the license plate matching technology to find the suspected vehicle with matching license plate in the image database. Although this method is relatively mature, the license plate is easily blocked or replaced deliberately. [0004] If the license plate of the suspect vehicle is changed or blocked, once this happens, the traditional retrieval of the suspect vehicle will be completely ineffective. Contents of the invention [0005] The purpose of the...

Claims

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Application Information

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IPC IPC(8): G06F17/30
CPCG06F16/5838
Inventor 赵康封少坤梅俊琪
Owner ZHONGKE UNITED AUTOMATION SCI & TECH WUXI
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