Rapid retrieval method for expressway pavement information

The invention relates to the field of data processing, in particular to a method for quickly retrieving highway pavement information, which comprises the following steps of: calculating a first correlation and a second correlation according to historical data of different highway pavement information; using the product of the first correlation and the second correlation as the corresponding correlation of different expressway pavement information; according to the corresponding correlation between the pavement information of the expressways and the distance between the expressways, obtaining the regional correlation between the different expressways, and then obtaining an anomaly detection evaluation value according to the difference between the correlation of historical data of the expressways and the correlation of normalized anomaly detection values; obtaining an optimal K value according to the abnormal detection evaluation value; obtaining the abnormal degree of the road surface information of each expre