License plate recognition system and license plate recognition method
A license plate recognition system and a license plate recognition method are provided. The license plate recognition system includes an image capturing module, a determination module and an output module. The image capturing module is utilized for capturing an image of a target object. The determination module is utilized for dividing the image of the target object into a plurality of image blocks. The determination module utilizes the plurality of image blocks to generate feature data and perform a data sorting process on the feature data to generate a first sorting result. The output module outputs the sorting result.
1. A license plate recognition system, comprising:
an image capturing module for capturing an image of a target object;
a determination module, comprising:
a vehicle detection module, for dividing the image of the target object into a plurality of image blocks, utilizing the plurality of image blocks to generate a plurality of information and obtaining an vehicle image through the plurality of information;
a license plate detection module, for performing a feature determination process on the vehicle image to obtain a license plate image; and
a license plate recognition module, for performing a feature extraction process on the license plate image to obtain a feature vector and performing a classifying process on the feature vector to generate corresponding probabilities and performing a data sorting process on the corresponding probabilities to generate a sorting result; and
an output module, for outputting the sorting result.
2. The license plate recognition system of claim 1 , wherein the vehicle detection module comprises a grid cell division operation and the network output.
3. The license plate recognition system of claim 1 , wherein the license plate recognition module comprises a feature extraction module and a character recognition module.
4. The license plate recognition system of claim 1 , wherein
the feature determination process comprises a feature extraction, a feature merging and an output layer.
5. A license plate recognition method, comprising:
utilizing an image capturing module to capture an image of a target object;
utilizing a vehicle detection module to perform a grid cell division operation to obtain a plurality of image blocks and calculating the plurality of image blocks to generate a plurality of information and arranging the plurality of information to obtain a vehicle image; and
utilizing a license plate detection module to perform a feature determination process on the vehicle image to obtain a license plate image, and utilizing a license plate recognition module to perform a feature extraction process on the license plate image to obtain a feature map, reshape the feature map to obtain a feature vector, perform a classifying process on the feature vector to generate a corresponding probability, perform a data sorting process on the corresponding probability to generate a sorting result, and utilizing an output module to output the sorting result.
6. The license plate recognition method of claim 5 , wherein the feature determination process comprises a feature extraction, a feature merging and an output layer.
7. A license plate recognition module using the method according to claim 6 , comprising:
a feature extraction module for performing a feature extraction operation on the license plate image to obtain a feature map and reshapes the feature map so as to obtain a feature vector; and
a character recognition module for classifying the feature vectors, obtaining corresponding probabilities of the feature vector accordingly and performing a data sort process on the corresponding probabilities of the feature vectors to generate a sorting result.
8. The license plate recognition module of claim 7 , wherein the character recognition module comprises a long short-term memory (LSTM) and a connectionist temporal classification (CTC).