Novel Rifle Number Recognition Based on Improved YOLO in Military Environment

Deep neural networks perform well in image recognition, object recognition, pattern analysis, and speech recognition. In military applications, deep neural networks can detect equipment and recognize objects. In military equipment, it is necessary to detect and recognize rifle management, which is an important piece of equipment, using deep neural networks. There have been no previous studies on the detection of real rifle numbers using real rifle image datasets. In this study, we propose a method for detecting and recognizing rifle numbers when rifle image data are insufficient. The proposed method was designed to improve the recognition rate of a specific dataset using data fusion and transfer learning methods. In the proposed method, real rifle images and existing digit images are fused as training data, and the final layer is transferred to the Yolov5 algorithm model. The detection and recognition performance of rifle numbers was improved and analyzed using rifle image and numerical datasets. We used actual rifle image data (K-2 rifle) and numeric image datasets, as an experimental environment. TensorFlow was used as the machine learning library. Experimental results show that the proposed method maintains 84.42% accuracy, 73.54% precision, 81.81% recall, and 77.46% F1-score in detecting and recognizing rifle numbers. The proposed method is effective in detecting rifle numbers.