分别使用CTF和CTP系统印刷四色网点梯尺，对印版和印刷得到的网点梯尺进行测量，根据测量数据，采用最小二乘法拟合CTP和CTF的印刷复制曲线方程，并计算出相应的数据，从而拟合出CTP匹配CTF的补偿曲线方程。根据拟合的CTP补偿曲线，可以用CTF的数据出CTP版。

The four-color dot rulers were printed respectively under CTF and CTP system and measurement was carried out on the printing plate and the print. According to the measured data, the calculated data were obtained by the least square fitting the printing curvilinear equation under CTP and CTF systems and used to figure out the compensation curvilinear equation of CTP matching CTF. CTF data can be used to make CTP plate according to fitted CTP compensation curve.