Based on the assumption that both the digitizer and the paper chart are two-dimension linear space, the conversion matrix can be determined according to X-Y values in two different cartesian Coordinates.

• 它是以假定数字化仪坐标系统和纸海图坐标系统都是二维线性空间为前提,由一组控制点在两种坐标系统中的坐标来确定线性变换关系的。