matlab图像的重心算法，明确的计算出一张图片的重心信息，算法简明且精确-a fabulous small program for the grivaty of the picture

该函数实现的是激光光斑中心检测。首先对光斑进行预处理，然后利用灰度重心法来计算得到光斑的中心坐标,最后利用MATLAB的绘图功能描绘出光斑中心位置的变化情况。-This function is implemented in the laser spot detection. First spot pretreatment, and then use the barycenter method to calculate the coordinates of the center of the sp

利用matlab或opencv自动计算图像中大米粒的个数，每个大米粒的位置（精确定位，重心法），计算每个大米粒的面积。(The number of rice grains in the image is calculated automatically by MATLAB or opencv, and the location of each grain of rice (precise positioning, gravity center method) is calculated.)