Method for fast retrieving high-similarity image of highway fee evasion vehicle

Abstract

The present invention discloses a method for fast retrieving a high-similarity image of a highway fee evasion vehicle. The method comprises: performing feature extraction and recognition on a collected sample image of an illegal vehicle by using a convolutional neural network model of a computer, constructing a corresponding K-d tree for the recognized feature, extracting a feature for a collected unknown image by using a fast high-similarity nearest neighbor search algorithm, and matching the feature of the unknown image with the feature of the sample image, to implement fast retrieval of a high-similarity image. According to the method provided by the present invention, better image feature expression can be obtained for retrieving a similar vehicle. Not only a retrieval result is high in similarity, but also retrieval is faster. Therefore, a function of image retrieval for cracking down on fee evasion, gaining evidence, cross-examination and a legal evidence chain can be sufficiently utilized, and behaviors of toll evasion can be fought and prohibited effectively.

Description

technical field [0001] The invention relates to a method for quickly retrieving high-similarity images of expressway toll evading vehicles, belonging to the technical field of traffic pattern recognition. Background technique [0002] Driven by economic interests, the phenomenon of evading tolls by paying vehicles is common on expressways across the country (except Hainan Province). Serious incidents in which management personnel are disabled or even killed. Due to the limitations of expressway management and certain conditions, it is more difficult to obtain evidence for illegal vehicle evasion fees, which weakens the efforts to crack down on illegal driver gangs evading tolls, and affects the normal toll collection operations of expressway managers. [0003] To sum up the past investigations and crackdowns on toll evasion behavior, mainly based on experience, through the establishment of a blacklist in the management system of toll evasion vehicles, the corresponding vide...

AI Technical Summary

Problems solved by technology

However, as the information contained in the image gradually increases, it is obviously difficult to manually design an effective and good feature expression, and it takes a long time period.

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