A precompensation method of thermal errors in CNC machine tools is presented. 研究了数控机床热误差的预补偿方法。
The displacement precompensation is utilized to reduce this kind of error, which greatly improves the accuracy of the optical flow estimation. 通过位移预补偿方式减小了时域微分估计中的不准确性，极大地提高了光流计算精度。
