flat-field lens

Now it has been applied to the treatment of experimental data in measuring the symmetry of scanning lens.

从小波变换的定义和性质出发，研究了它在图像识别和边缘检测中的基本原理及优越性能，并将其应用到测量扫描透镜对称度的实验数据处理当中，而且取得了令人满意的结果。