Cheng Y Y
Appl Opt. 1987 Oct 15;26(20):4413-5. doi: 10.1364/AO.26.004413.
A new method to generate a circular harmonic filter with both rotation and translation invariance is described, which is based on a phase-shifted double-exposure (PSDE) technique. An expression for the peak correlation intensity at the origin of the correlation plane as a function of target orientation for the PSDE filter is derived. Experimental results confirming the theoretical predictions are provided.
描述了一种基于相移双曝光(PSDE)技术生成具有旋转和平移不变性的圆形谐波滤波器的新方法。推导了PSDE滤波器在相关平面原点处的峰值相关强度作为目标方向函数的表达式。提供了证实理论预测的实验结果。