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本文描述了一个新的实时光学图像识别系统。该系统主要是激光二极管、多换能器声光器件、电荷耦合器件以及光学透镜组成的。这个系统既不需要相干光输入图像,也不需要基准图像的付氏变换金息图。不同波段成像系统输出的实时视频图像信号和事先记录的或实时截获的基准图像均可施加给本系统。文中给出了理论分析以说明工作原理。实验结果证实这种非相干光相关器具有完成实时图像识别的能力。事实上,某些图像识别任务碰到的图像位移、尺寸、旋转不变性问题,本系统可容易地予以解决。
This article describes a new real-time optical image recognition system. The system is mainly composed of a laser diode, a multi-transducer acousto-optical device, a charge coupled device and an optical lens. This system neither requires coherent light input images, nor does it require the Fourier transform of the reference image. Real-time video image signals output by different waveband imaging systems and pre-recorded or real-time intercepted reference images can be applied to the present system. The article gives a theoretical analysis to illustrate the working principle. Experimental results show that this non-coherent optical correlator has the ability of real-time image recognition. In fact, some image recognition tasks encountered image displacement, size, rotation invariance problems, the system can be easily solved.