diffraction spot meaning in English

衍射斑点
衍射点

In the paper , we describe the whole configuration of the joint transform correlator ; introduce the correlative theories of joint fourier transform in detail ; in order to achieve better correlation result , the nonlinear processing of joint transform power spectrum ( jtps ) is put forward , the effect of jtps laplace sharpening and binary processing to the correlation image is given ; the method of the best binary threshold is determined ; we analyse the correlation image , present the way that removes liquid crystal diffraction spot , direct current spot and image noise , and binarize the correlation image finally
本论文主要对提出的联合变换相关的整体结构进行了描述；详细介绍了联合傅里叶变换的相关理论；为了得到更好的相关结果，本文提出对联合功率谱进行非线性处理的方法，给出了联合变换功率谱的拉普拉斯锐化和谱的二值化处理对相关峰图像的影响及二值化最佳阈值的确定方法；对相关峰图像信息进行了分析；提出了消除液晶衍射光斑、直流光斑和图像噪声的方法；最后对相关峰图像进行了二值化处理。