Eliminating Noise of Optical Address Spatial Light Modulator for Photoelectric Hybrid Robot Vision System
光电混合机器人视觉系统中光寻址空间光调制器的噪音处理

In view of the photoelectric hybrid robot vision system,the sources of noise and the artificial frequency in the process of the continuous image being sampled by the optical addressing spatial light modulator were analyzed.By using the sampling theory,the method of restraining the sources of noise and the artificial frequency by the eliminating artificial frequency light pre-filter was put forward.On the base of the eliminating artificial frequency light pre-filter being the rectangular window function by the theoretical analysis and according to the parameters of the optical addressing spatial light modulator in the robot vision system,the structure and the size of the eliminating artificial frequency light pre-filter used in this system was calculated out.The experiment of the image character pick-up of the vision system was carried out and the experimental results show that the light pre-filter has good effect.