Although center of gravity algorithm is put forward early,it still be studied and extended due to its inherent advantages.

This paper proposes several improved CMOS analog circuits for neuro-fuzzy network,including Gaussian-like membership function circuit,minimization circuit,and a centroid algorithm defuzzier circuit without using division.

This method transformed star location data with trail into approximately ideal star location data according to characteristic of star location with trail,and then used the centroid algorithm to calculate star location.

Treatment flow for video-image is presented,using AVI function to discompose frames,applying one-dimension maximum entropy algorithm in segmentation of image,employing barycenter algorithm to calculate object s movement track.

This method introduces a subpixel technique and adopts the barycenter algorithm to compute the barycenter of characteristic speckle, which can avoid the complex process of computing the correlation coefficient in digital speckle method; experimental distortion curve for the measured object can be obtained through the related formulas of displacement.

Mind wandering is a very universal conscious phenomenon, and it\'s existence show that besides reacting to the external world and the immediate task, the individual\'s cognitive system has many spontaneous and involuntary internal processing and which play a big role in mind.