METHOD AND SYSTEM FOR RECOGNIZING AND TRACING RIVER CRAB BASED ON COMPUTER IMPLEMENTED IMAGE RECOGNITION

摘要

#$%^&*AU2020100301A420200402.pdf#####ABSTRACT The present invention relates to a method and system for recognizing and tracing a river crab based on image recognition. The method includes: extracting an image and traceability information of a corresponding to-be-traced crab from a traceability database according to a number of the to-be-traced crab; acquiring a to-be-traced crab shell image taken by a consumer via a mobile phone and a database crab shell image extracted from the traceability database; preprocessing the to-be-traced crab shell image and the database crab shell image to obtain a preprocessed to-be-traced crab shell image and a preprocessed database crab shell image; extracting a feature point from the preprocessed to-be-traced crab shell image and the preprocessed database crab shell image respectively; matching the feature point, and obtaining a number of feature point pairs after matching; determining whether the number of the feature point pairs after matching is greater than a set threshold; if yes, determining that the to-be-traced crab shell image and the database crab shell image belong to the same crab, and outputting the traceability information extracted from the traceability database; and if not, determining that the to-be-traced crab shell image and the database crab shell image do not belong to the same crab, and outputting no-traceability information. The present invention improves the river crab tracing accuracy. 1Extract an image and traceability information of a 101 corresponding to-be-traced crab from a traceability database according to a number ofthe to-be-traced crab 102 Acquire a to-be-traced crab shell image taken by a consumer via a mobile phone and a database crab shell image extracted from the trace ability database Preprocess the to-be-traced crab shell imageand the 103 database crab shell image to obtain a preprocessed to-be-traced crab shellimage and a reprocessed database crabshell image Extract a feature point from the preprocessed to-be-traced 104 crab shell image and the preprocessed database crab shell image res ectivel 105 Match the feature point, and obtain a number of a feature point pair after matching 106 Determine whether the number of the featu No point pair after matching is greater than a set threshold 107 108 Y es Determine that the to-be-traced crab shell image and the Determine that the to-be-traced crab shell image and database crab shell image belong to the same crab, and output the the database crab shell image do not belong to the same traceability information extracted from the traceability database; crab, and output no-traceability information FIG. 1 FG b FIG. 2