Information detection method and device

Abstract

The invention provides an information detection method and device. According to the method, after the feature information of a latest image and the original feature information of an original image are obtained, the obtained feature information is matched with the original feature information to obtain a matching result; when the matching result is not in accordance with a preset condition, it is determined that an information point is changed. Namely, according to the information detection method, on the basis of the feature information of images, whether or not information points are changed is determined; compared with a recognition process of text information, the process of obtaining feature information of the original image and the latest image is simplified. Moreover, by adopting the original feature information of the original image as a standard, it is not required to train a great amount of original feature information to serve as training samples. Furthermore, as for an arbitrary information point in a map, the corresponding original feature information of the information point is known and unique, and therefore, the obtained feature information can be directly matched with the unique original feature information of the same information point to reduce matching amount, so that the detection efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of map processing, and more specifically relates to an information detection method and device. Background technique [0002] In the field of maps, POI (Point of Interest) refers to meaningful points in the geographical sense, such as shops, bars, gas stations, hospitals, and stations. Composed of roads, each POI is the most fundamental element required by map users in various usage scenarios, such as route planning from one POI to another POI, location coordinates of the target POI, and retrieval of other elements around the target POI. It can be seen that the quantity and quality of POIs have a significant impact on the user experience of the map. [0003] However, the POI information corresponding to the POI is constantly changing, such as changing the POI name or adding a new POI name. Therefore, in order to ensure that the POI information is consistent with the actual situation, it is necessary to cont...

AI Technical Summary

Problems solved by technology

[0004] Although the above information detection method can automatically detect whether POI information has changed, the above information detection method needs to train a large number of training samples to cover many font styles, and it needs to perform steps such as character cutting, character recognition and layout processing when recognizing text through OCR , the execution is cumbersome, and the recognized text needs to be compared with the POI names in the database one by one at the semantic level, thereby reducing the detection efficiency

Images