CAJ | 학술논문

输电线路视频图像中的间隔棒是获得导线状态信息的重要元素。为了实现对输电线路图像中间隔棒的快速、准确定位，提出了一种基于梯度方向场优化的快速模板匹配算法。该算法针对传统的相关匹配算法运算量大、直方图匹配结果不准确的缺陷，提出了直方图和归一化相关匹配结合的复合匹配方法。结合输电线路图像中导线方向明确的特点，应用梯度方向场对图像中输电线路目标区域进行锁定，减少模板的搜索空间。实验结果表明，该算法具有较强的鲁棒性，在保证匹配精度的同时，大幅提高了匹配速度，能够满足远程视频监控系统对电力设备图像识别实时性和准确性的需求，可为准确判定输电线路状态信息提供依据。
수전선로시빈도상중적간격봉시획득도선상태신식적중요원소。위료실현대수전선로도상중간격봉적쾌속、준학정위，제출료일충기우제도방향장우화적쾌속모판필배산법。해산법침대전통적상관필배산법운산량대、직방도필배결과불준학적결함，제출료직방도화귀일화상관필배결합적복합필배방법。결합수전선로도상중도선방향명학적특점，응용제도방향장대도상중수전선로목표구역진행쇄정，감소모판적수색공간。실험결과표명，해산법구유교강적로봉성，재보증필배정도적동시，대폭제고료필배속도，능구만족원정시빈감공계통대전력설비도상식별실시성화준학성적수구，가위준학판정수전선로상태신식제공의거。
The spacer is an important element to obtain the state of transmission lines. To accurately and quickly locate the spacer in transmission line images, this paper proposed a fast template matching algorithm based on the optimization of the gradient directional field. Since the traditional correlation matching algorithm is complex and the result of the histogram matching algorithm is inaccurate, a combination method of histogram and normalized correlation matching algorithm was put forward. In order to reduce the search space of the template, combined with the characteristics of transmission lines’ specific directional information, gradient directional field was applied to lock the target area of transmission line images. Experimental results show that this algorithm has strong robustness and matching precision. At the same time, it both greatly improves matching speed, which can meet the demands of real-time and accuracy of the remote video monitoring system for power equipment, and provides references for accurate determination of transmission lines’ state information.