Reading Aviation Wire Text in Natural Images under Assembly Workshop via Deeplearning

2019 International Conference on Advanced Electronic Materials, Computers and Materials Engineering

无线电电子学;计算机科学;材料科学

Li, Shufei^1 ; Zheng, Lianyu^1 ; Wang, Yiwei^1 ; Zhang, Renjie^1

School of Mechanical Engineering and Automation, Beihang University, Beijing

100191, China^1

关键词: Aircraft cables;    Aircraft wires;    Assembly workshop;    Background noise;    Detection networks;    Machine vision cameras;    Natural images;    Synthetic images;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/563/4/042075/pdf
DOI  :  10.1088/1757-899X/563/4/042075

来源: IOP

【 摘 要 】

Reading aviation wire text is an important step for aircraft wire assembly and also a challenging problem. Aviation wire text reading means to detect and recognize the serial number printed on the surface of aviation wires or aircraft cables. The main challenges of this task lie on small sizes, low contrast and background noise in images. In this paper, we propose a new method for aviation wire text detection and recognition via deep neural networks. The detection network utilizes text border features to roughly locate text regions in images. Then the coordinates of bounding boxes of texts are regressed by pixel-level predicted offsets in adjacent regions. The recognition network is capable to recognize the text regions with diverse lengths after padding strategies. In addition, a dataset of aviation wires captured by machine vision camera in the assembly workshop is developed. A flexible method to generate synthetic images of text whose characters are arranged in styles of both head-to-tail and left-to-right is presented. On aviation wire datasets, the proposed method for text detection and recognition achieves comparable performance and significantly outperforms previous approaches.