实现图像沿着水平方向截面的投影，通过计算该截面灰度值累加计算量的集合得到-Sectional projection of the image along the horizontal direction, obtained by calculating the calculated amount of collection of the gray value of the cross-sectional accumulate

对输入图像进行判断是否为三维，若是则转化为二维，然后在用灰度图像进行水平和垂直投影-The input image is to determine whether the 3D into 2D, if it is, then the horizontal and vertical projection in gray image