According to this characteristic,the paper analyses two mathematic models of different optic correlation configurations.

One of these methods is the correlation algorithm of information of the object image structure with the speckle images,then the maximum value point of the cross correlation can be used for a proper datum point.

This paper is based on the speed requirement of the correlation computation and the fact that the commonly used FFT algorithm has the high computation speed together with the defect of the requirement that the number of sample points is the integer power of 2.

A new iterative decoding for product codes with correlation operation;

Superposition feedback decoding algorithm for parallel concatenated block code based on correlation operation

In this paper,a adjustment factor α(m) has been introduced to define the linear superposition feedback,and the computation amount of the algorithm has been greatly decreased by using simple correlation operation in stead of the complicated LLR operation in the conventional product iterative decoding.

Image processing of the flow field of agitator based on cross-correlation algorithm;

PIV technique based on cross-correlation algorithm;

Through performing the researches on both key parameter calculating method and measure accuracy improving method in the cross-correlation algorithm,a number of locating experiments were conducted for leaked point.

A cross correlation algorithm based on Fast Fourier Transform (FFT) for Digital Particle Image Velocimetry (DPIV) is discussed thoroughly in this paper.

Based on comparing characteristics of some improved cross correlation algorithms,mathematics expressions of the vector error are defined.