By this filter, the shift, scale and rotation invariant optical pattern recognition was realized with a high signal noise ratio of correlation output.
用这种滤波器实现了平移、旋转、尺度三重不变光学图像识别,且有较高的信噪比。
2
Finally, it also analyzed the relationship between the input pump power and the probe optical power and its output power and output extinction ratio.
最后分析了全光译码器的输出功率和输出消光比与输入泵浦光功率、探测光功率之间的关系。
3
Fiber polarization controller and polarization-maintaining optical circulator with high extinction ratio were incorporated in the loop cavity to acquire single polarization output.