Research on visualisation algorithm of handwritten digital image recognition based on deep neural network

The efficiency and accuracy of manual observations of Modified National Institute of Standards and Technology (MNIST) handwritten digital images are low. To solve this problem, a method based on a Deep Neural Network (DNN) model is proposed for screening, classifying and recognising handwritten digital images. MNIST handwritten digital images are used to train and test the DNN model for the rapid and accurate recognition. The average recognition accuracy of DNN model is 96.46%. The interactive interface is designed to realise the visualisation of programs and algorithms, and algorithms can be analysed from different angles and levels. From comparing the recognition effect of the DNN with Local Binary Pattern (LBP) feature extraction using texture features and edge feature extraction using shape features, the experimental results show that the DNN not only has high-recognition accuracy, but also simplifies the complex process for manually extracting image features.yy