(for image):shape[0]: Height; shape[1]: Wide; shape[2]: channel 对于二维图片,shape【0】:图片高度;shape【1】:图片宽度;shape【2】:通道数; (for matrix): shape[0]: row; shape[1]:column; 对于矩阵而言:shape【0】:行数;shape【1】:列数;