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首页> 外文期刊>Optics Communications: A Journal Devoted to the Rapid Publication of Short Contributions in the Field of Optics and Interaction of Light with Matter >The use of a consumer grade photo camera in optical-digital correlator for pattern recognition and input scene restoration
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The use of a consumer grade photo camera in optical-digital correlator for pattern recognition and input scene restoration

机译:消费级相机在光学数字相关器中用于模式识别和输入场景恢复的使用

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In this work an optical-digital correlator for pattern recognition and input scene restoration is described. Main features of the described correlator are portability and ability of multi-element input scenes processing. The correlator consists of a consumer grade digital photo camera with a diffractive optical element (DOE) inserted as a correlation filter. Correlation of an input scene with a reference image recorded on the DOE are provided optically and registered by the digital photo camera for further processing. Using obtained correlation signals and DOE's point spread function (PSF), one can restore the image of the input scene from the image of correlation signals by digital deconvolution algorithms. The construction of the correlator based on the consumer grade digital photo camera is presented. The software procedure that is necessary for images linearization of correlation signals is described. Experimental results on optical correlation are compared with numerical simulation. The results of images restoration from conventionally and specially processed correlation signals are reported. Quantitative estimations of accuracy of correlation signals as well as restored images of the input scene are presented.
机译:在这项工作中,描述了用于模式识别和输入场景恢复的光学数字相关器。所描述的相关器的主要特征是可移植性和多元素输入场景处理的能力。相关器由一个消费级数码相机组成,该相机具有作为相关滤波器插入的衍射光学元件(DOE)。光学地提供输入场景与记录在DOE上的参考图像的相关性,并由数码相机记录,以进行进一步处理。使用获得的相关信号和DOE的点扩展函数(PSF),可以通过数字反卷积算法从相关信号的图像中还原输入场景的图像。介绍了基于消费级数码相机的相关器的构造。描述了相关信号的图像线性化所必需的软件过程。将光学相关性的实验结果与数值模拟进行了比较。报告了从常规和经过特殊处理的相关信号中恢复图像的结果。提出了相关信号以及输入场景的恢复图像的准确性的定量估计。

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