Research On Robot Vision System And Its Experiment Based On Wavelet Transform

Robot vision is a new technology developed since 1980s. It is also the forward issues all over the world. In recent years, robot vision has developed fast and some succeeded robot vision system had been designed. But because it is a complex technology and there are many difficulties in research, there is not a succeeded versatile vision system yet. Robot vision system has many limitations, one of which is its data processing are very large so that it has to spend much time to process these data. Therefore, the processing speed becomes one of the vital problems. At present time the method to improve the processing speed is to use personal DSP chips. But the DSP chips are not versatile and cost much, so more and more technologists start to improve robot vision processing speed with optical information processing.Optical information processing is a novel technology developed recent years. It realizes transforms or processing of the input information by optical method. Its advantages include high processing speed, large storage, and are highly suit to process image information compared to other signal processing methods. One of its forward research issues is optical wavelet transform. Wavelet transform is a branch of applied mathematics. It derives from signal analysis is considered the important breakthrough of applied mathematics in recent decades. Optical wavelet transform realize wavelet transform of signal and image through optical technology and method-based wavelet transform theory. Today optical wavelet transform has been used in image edge extraction, object detection and recognition etc because it has not only the advantages of optical information processing system but also the advantages of wavelet transform.It is because optical wavelet transform has great advantages in image processing field that this paper use optical wavelet transform in robot vision creatively and design a novel robot vision system based on optical wavelet transform. And this paper also researched the optical wavelet transform filter deeply and realize a novel wavelet filter by programming method which overcome the defects ofcurrent wavelet filter, such as low flexibility and operability. The theory analysis of 2-D wavelet transforms utility in image edge extraction is also gives in this paper. A collimating device is also designed in this paper, and the collimating coherent light is good proved by the followed experiments. The robot vision system's object reading experiment is also finished in this paper, all these proved that this novel robot vision system is feasible.