摘要
航空显示设备中,光栅笔划显示信号的产生和检测是自动测试系统(ATS)的一个关键技术。采用基于Harris角点匹配的自动检测技术,通过提取测试笔划画面和参考画面的特征点,进行特征点的粗匹配、精匹配和一致性检测,然后选取最佳匹配特征点对,找出仿射变换矩阵,对画面整体平移和线性失真进行判断。为提高配准精度,在测试过程中,保留人工选取特征点的方式。最终采用对上述两种测试方式处理结果加权平均的方法,评价画面整体相似度。
The generation and test of raster/stroke signal is a critical technology of Automatic Test System （ATS） for aircraft display device. An automatic test technology based on Harris corner detection was adopted in this paper. The characteristic points of the test picture and referenced picture were extracted, and coarse matching, accurate matching and consistency test were made for the characteristic points. Then, the optimal matching pair of characteristic points was selected, and the affine transformation matrix was found out for estimating the whole shift and linear distortion of the picture. In order to improve the matching precision, the manual mode for choosing characteristic points in the course of testing was kept. The similarity of the picture was evaluated by using weighted average method.
出处
《电光与控制》
北大核心
2010年第12期86-90,共5页
Electronics Optics & Control
