积分投影和统计法在车号定位中的应用

Integral Projection and Statistical Method' Application in Train Number Positioning

车号印刷在车厢边沿加大了车号自动识别难度,减少冗余数据和准确定位到车号,对有效提高车号识别具有重要意义。论文提出了一种基于积分投影和统计法定位印刷在车厢边沿的车号的方法,它首先使用积分投影法获取具有明显特征的图像,然后使用最值集统计法计算出两节车厢边界,最后使用滑动窗口等法计算车号的左右上下边界。实验表明,该方法能有效地定位到印刷在车厢边沿的车号。

Train number is printed on the edge of train compartment, which make train number auto-recognition harder. It is important for train number effective auto-recognition to decrease the data redundancy and find the accurate train number position. This paper provides a train number positioning method based on integral projection combining statistics Firstly, images with distinguishing characteristic are captured by applying integral projection method. Secondly, border between two compartments is obtained by use of extreme value set statistics. Finally, the distance of between train number and compartment boundaries is evaluated by sliding window statistics. It is proved that this method can determine the position of train number printed on the edge of compartment effectively after tests.