利用0度和90度刺激下的内源性脑光学成像数据，获得大脑视觉皮层的方位功能柱，涉及的方法包括图像相减，叠加平均等；
　对方位功能柱图像进行滤波处理，采用不同滤波方式（空域滤波和频域滤波）比较不同滤波下图像功能柱信号(Using the brain optical imaging data stimulated by 0 and 90 degrees, the functional column of the visual cortex of the brain is obtained. The methods involved include image subtraction, overlay averaging and so on;
The azimuth function column image is filtered and different filtering methods (spatial filtering and frequency domain filtering) are used to compare the functional column signals of different filters)