Methods of accuracy improving of pre-trained networks are discussed. Images of ships are input data for the networks. Networks are built and trained using Keras and TensorFlow machine learning libraries. Fine tuning of previously trained convoluted artificial neural networks for pattern recognition tasks is described. Fine tuning of VGG16 and VGG19 networks are done by using Keras Applications. The accuracy of VGG16 network with finetuning of the last convolution unit increased from 94.38% to 95.21%. An increase is only 0.83%. The accuracy of VGG19 network with fine-tuning of the last convolution unit increased from 92.97% to 96.39%, which is 3.42%.
Gustavo Henrique de RosaMateus RoderJoão Paulo PapaClaudio Filipi Gonçalves dos Santos
Newton SpolaôrHuei LeeAna Isabel MendesConceição NogueiraAntonio Rafael Sabino ParmezanWeber Shoity Resende TakakiCláudio Saddy Rodrigues CoyFeng Chung WuRui Fonseca-Pinto
Yaser M. RoshanAmir Hossein VejdaniSaboora M. RoshanAli Karsaz