基于机器视觉，控制三自由度运动控制台来调整显微镜位置，通过图像处理得到易拉罐的表面刻痕大小和长度。-The software control the motion platform with 3 d.o.f. to position the microscope and then test the notch of cans using image processing.

Uses 2nd order allpass filters for the 2x upsampling, followed by a notch filter just above Nyquist. -Uses 2nd order allpass filters for the 2x upsampling, followed by a notch filter just above Nyquist.

设计低通滤波器的matlab源程序 IIR一阶低通滤波器,高通滤波器,Notch 嵌波滤波器()