Character recognition method and device

A system for character recognition, the system comprising:

• one or more processors;
• and
• a memory storing instructions that, when executed by the one or more processors, cause the system to perform:
• obtaining picture data, by partitioning each piece of picture data from a number area of a picture of an identification card;
• performing calculation on the picture data by using calculation layers shared by a first classifier and a second classifier, to obtain a first result, wherein the first classifier is a classifier for recognizing a specific character in the picture data, and the second classifier is a classifier for recognizing whether the picture data is a character picture;
• performing calculation by bringing the first result into remaining calculation layers other than the shared calculation layers in the first classifier, to obtain a first probability corresponding to each character, wherein each character is a digit;
• performing calculation by bringing the first result into remaining calculation layers other than the shared calculation layers in the second classifier, to obtain a second probability;
• calculating, based on the first probability and the second probability, a confidence value that the picture data is recognized as each character, by multiplying a maximum first probability by the second probability to obtain a confidence value that the picture data is a digit corresponding to the maximum first probability;
• and
• outputting a character recognition result based on the confidence value.

A system for character recognition, comprising:

• one or more processors;
• and
• a memory storing:
• a first classifier that, when executed by the one or more processors, causes the system to recognize a specific character in picture data, the first classifier comprising at least two convolutional layers, at least two fully connected layers, and at least one Softmax layer;
• and
• a second classifier that, when executed by the one or more processors, causes the system to recognize whether the picture data is a picture of a character, the second classifier comprising at least two convolutional layers, at least two fully connected layers, and at least one Softmax layer,
• wherein the first classifier and the second classifier share at least two convolutional layers and at least one fully connected layer.